Rous sarcoma virus: A species of replication-competent oncogene-containing virus in the genus ALPHARETROVIRUS. It is the original source of the src oncogene (V-SRC GENES) and causes sarcoma in chickens.Alpharetrovirus: A genus of the family RETROVIRIDAE with type C morphology, that causes malignant and other diseases in wild birds and domestic fowl.Endogenous Retroviruses: Retroviruses that have integrated into the germline (PROVIRUSES) that have lost infectious capability but retained the capability to transpose.Encyclopedias as Topic: Works containing information articles on subjects in every field of knowledge, usually arranged in alphabetical order, or a similar work limited to a special field or subject. (From The ALA Glossary of Library and Information Science, 1983)Retroviridae: Family of RNA viruses that infects birds and mammals and encodes the enzyme reverse transcriptase. The family contains seven genera: DELTARETROVIRUS; LENTIVIRUS; RETROVIRUSES TYPE B, MAMMALIAN; ALPHARETROVIRUS; GAMMARETROVIRUS; RETROVIRUSES TYPE D; and SPUMAVIRUS. A key feature of retrovirus biology is the synthesis of a DNA copy of the genome which is integrated into cellular DNA. After integration it is sometimes not expressed but maintained in a latent state (PROVIRUSES).Retroviridae Infections: Virus diseases caused by the RETROVIRIDAE.Transcription, Genetic: The biosynthesis of RNA carried out on a template of DNA. The biosynthesis of DNA from an RNA template is called REVERSE TRANSCRIPTION.Terminal Repeat Sequences: Nucleotide sequences repeated on both the 5' and 3' ends of a sequence under consideration. For example, the hallmarks of a transposon are that it is flanked by inverted repeats on each end and the inverted repeats are flanked by direct repeats. The Delta element of Ty retrotransposons and LTRs (long terminal repeats) are examples of this concept.Multiple Sclerosis: An autoimmune disorder mainly affecting young adults and characterized by destruction of myelin in the central nervous system. Pathologic findings include multiple sharply demarcated areas of demyelination throughout the white matter of the central nervous system. Clinical manifestations include visual loss, extra-ocular movement disorders, paresthesias, loss of sensation, weakness, dysarthria, spasticity, ataxia, and bladder dysfunction. The usual pattern is one of recurrent attacks followed by partial recovery (see MULTIPLE SCLEROSIS, RELAPSING-REMITTING), but acute fulminating and chronic progressive forms (see MULTIPLE SCLEROSIS, CHRONIC PROGRESSIVE) also occur. (Adams et al., Principles of Neurology, 6th ed, p903)Terminology as Topic: The terms, expressions, designations, or symbols used in a particular science, discipline, or specialized subject area.GermanyRed Cross: International collective of humanitarian organizations led by volunteers and guided by its Congressional Charter and the Fundamental Principles of the International Red Cross Movement, to provide relief to victims of disaster and help people prevent, prepare for, and respond to emergencies.Classification: The systematic arrangement of entities in any field into categories classes based on common characteristics such as properties, morphology, subject matter, etc.Bacteria: One of the three domains of life (the others being Eukarya and ARCHAEA), also called Eubacteria. They are unicellular prokaryotic microorganisms which generally possess rigid cell walls, multiply by cell division, and exhibit three principal forms: round or coccal, rodlike or bacillary, and spiral or spirochetal. Bacteria can be classified by their response to OXYGEN: aerobic, anaerobic, or facultatively anaerobic; by the mode by which they obtain their energy: chemotrophy (via chemical reaction) or PHOTOTROPHY (via light reaction); for chemotrophs by their source of chemical energy: CHEMOLITHOTROPHY (from inorganic compounds) or chemoorganotrophy (from organic compounds); and by their source for CARBON; NITROGEN; etc.; HETEROTROPHY (from organic sources) or AUTOTROPHY (from CARBON DIOXIDE). They can also be classified by whether or not they stain (based on the structure of their CELL WALLS) with CRYSTAL VIOLET dye: gram-negative or gram-positive.Editorial Policies: The guidelines and policy statements set forth by the editor(s) or editorial board of a publication.Indigo Carmine: Indolesulfonic acid used as a dye in renal function testing for the detection of nitrates and chlorates, and in the testing of milk.BooksVanilla: A plant genus of the family ORCHIDACEAE that is the source of the familiar flavoring used in foods and medicines (FLAVORING AGENTS).Paeonia: A plant genus of the family Paeoniaceae, order Dilleniales, subclass Dilleniidae, class Magnoliopsida. These perennial herbs are up to 2 m (6') tall. Leaves are alternate and are divided into three lobes, each lobe being further divided into three smaller lobes. The large flowers are symmetrical, bisexual, have 5 sepals, 5 petals (sometimes 10), and many stamens.Betaretrovirus: A genus of the family RETROVIRIDAE consisting of viruses with either type B or type D morphology. This includes a few exogenous, vertically transmitted and endogenous viruses of mice (type B) and some primate and sheep viruses (type D). MAMMARY TUMOR VIRUS, MOUSE is the type species.Tylenchoidea: A superfamily of nematodes whose members are free-living saprophytes or parasites of plants. Ova are sometimes found in human feces after ingestion of infected plants.HIV Integrase: Enzyme of the HUMAN IMMUNODEFICIENCY VIRUS that is required to integrate viral DNA into cellular DNA in the nucleus of a host cell. HIV integrase is a DNA nucleotidyltransferase encoded by the pol gene.Virus Integration: Insertion of viral DNA into host-cell DNA. This includes integration of phage DNA into bacterial DNA; (LYSOGENY); to form a PROPHAGE or integration of retroviral DNA into cellular DNA to form a PROVIRUS.HIV Integrase Inhibitors: Inhibitors of HIV INTEGRASE, an enzyme required for integration of viral DNA into cellular DNA.RNA, Viral: Ribonucleic acid that makes up the genetic material of viruses.DNA, Viral: Deoxyribonucleic acid that makes up the genetic material of viruses.Embryonal Carcinoma Stem Cells: The malignant stem cells of TERATOCARCINOMAS, which resemble pluripotent stem cells of the BLASTOCYST INNER CELL MASS. The EC cells can be grown in vitro, and experimentally induced to differentiate. They are used as a model system for studying early embryonic cell differentiation.Parotid Gland: The largest of the three pairs of SALIVARY GLANDS. They lie on the sides of the FACE immediately below and in front of the EAR.Amylases: A group of amylolytic enzymes that cleave starch, glycogen, and related alpha-1,4-glucans. (Stedman, 25th ed) EC 3.2.1.-.Carcinoma, Embryonal: A highly malignant, primitive form of carcinoma, probably of germinal cell or teratomatous derivation, usually arising in a gonad and rarely in other sites. It is rare in the female ovary, but in the male it accounts for 20% of all testicular tumors. (From Dorland, 27th ed & Holland et al., Cancer Medicine, 3d ed, p1595)Biological Science Disciplines: All of the divisions of the natural sciences dealing with the various aspects of the phenomena of life and vital processes. The concept includes anatomy and physiology, biochemistry and biophysics, and the biology of animals, plants, and microorganisms. It should be differentiated from BIOLOGY, one of its subdivisions, concerned specifically with the origin and life processes of living organisms.Teratoma: A true neoplasm composed of a number of different types of tissue, none of which is native to the area in which it occurs. It is composed of tissues that are derived from three germinal layers, the endoderm, mesoderm, and ectoderm. They are classified histologically as mature (benign) or immature (malignant). (From DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1642)Hominidae: Family of the suborder HAPLORHINI (Anthropoidea) comprising bipedal primate MAMMALS. It includes modern man (HOMO SAPIENS) and the great apes: gorillas (GORILLA GORILLA), chimpanzees (PAN PANISCUS and PAN TROGLODYTES), and orangutans (PONGO PYGMAEUS).Authorship: The profession of writing. Also the identity of the writer as the creator of a literary production.X-Linked Combined Immunodeficiency Diseases: Forms of combined immunodeficiency caused by mutations in the gene for INTERLEUKIN RECEPTOR COMMON GAMMA SUBUNIT. Both severe and non-severe subtypes of the disease have been identified.High-Throughput Nucleotide Sequencing: Techniques of nucleotide sequence analysis that increase the range, complexity, sensitivity, and accuracy of results by greatly increasing the scale of operations and thus the number of nucleotides, and the number of copies of each nucleotide sequenced. The sequencing may be done by analysis of the synthesis or ligation products, hybridization to preexisting sequences, etc.Sequence Analysis, DNA: A multistage process that includes cloning, physical mapping, subcloning, determination of the DNA SEQUENCE, and information analysis.Base Sequence: The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence.Abbreviations as Topic: Shortened forms of written words or phrases used for brevity.Dictionaries, MedicalDictionaries as Topic: Lists of words, usually in alphabetical order, giving information about form, pronunciation, etymology, grammar, and meaning.Dictionaries, ChemicalDictionaryNatural Language Processing: Computer processing of a language with rules that reflect and describe current usage rather than prescribed usage.GeeseTransfection: The uptake of naked or purified DNA by CELLS, usually meaning the process as it occurs in eukaryotic cells. It is analogous to bacterial transformation (TRANSFORMATION, BACTERIAL) and both are routinely employed in GENE TRANSFER TECHNIQUES.Fibroblasts: Connective tissue cells which secrete an extracellular matrix rich in collagen and other macromolecules.Cell Line: Established cell cultures that have the potential to propagate indefinitely.Molecular Sequence Data: Descriptions of specific amino acid, carbohydrate, or nucleotide sequences which have appeared in the published literature and/or are deposited in and maintained by databanks such as GENBANK, European Molecular Biology Laboratory (EMBL), National Biomedical Research Foundation (NBRF), or other sequence repositories.Avian Proteins: Proteins obtained from species of BIRDS.Amino Acid Sequence: The order of amino acids as they occur in a polypeptide chain. This is referred to as the primary structure of proteins. It is of fundamental importance in determining PROTEIN CONFORMATION.
Production and characterization of a soluble, active form of Tva, the subgroup A avian sarcoma and leukosis virus receptor. (1/332)The receptor for the subgroup A avian sarcoma and leukosis viruses [ASLV(A)] is the cellular glycoprotein Tva. A soluble form of Tva, sTva, was produced and purified with a baculovirus expression system. Using this system, 7 to 10 mg of purified sTva per liter of cultured Sf9 cells was obtained. Characterization of the carbohydrate modification of sTva revealed that the three N glycosylation sites in sTva were differentially utilized; however, the O glycosylation common to Tva produced in mammalian and avian cells was not observed. Purified sTva demonstrates significant biological activity, specifically blocking infection of avian cells by ASLV(A) with a 90% inhibitory concentration of approximately 25 pM. A quantitative enzyme-linked immunosorbent assay, developed to assess the binding of sTva to ASLV envelope glycoprotein, demonstrates that sTva has a high affinity for EnvA, with an apparent dissociation constant of approximately 0.3 nM. Once they are bound, a very stable complex is formed between EnvA and sTva, with an estimated complex half-life of 6 h. The soluble receptor protein described here represents a valuable tool for analysis of the receptor-envelope glycoprotein interaction and for structural analysis of Tva. (+info)
Substitutions in the receptor-binding domain of the avian sarcoma and leukosis virus envelope uncouple receptor-triggered structural rearrangements in the surface and transmembrane subunits. (2/332)The retrovirus avian sarcoma and leukosis virus (ASLV) enters cells via pH-independent membrane fusion. This reaction is catalyzed by the viral glycoprotein Env, composed of a membrane-distal subunit, SU, and a membrane-anchored subunit, TM. Previous mutational analysis of a variable region, central within the SU subunit, indicates that this region constitutes part of the receptor-binding domain for subgroup A envelope (EnvA) and furthermore that basic residues (R210, R213, R223, R224, and K227) within this region are critical determinants of efficient ASLV infection. Substitutions of these basic residues exert effects on both receptor binding and postbinding events in EnvA-mediated entry. In this study, we performed biochemical analysis of the EnvA protein from three of the receptor-binding domain mutants (R213A/K227A, R213A/R223A/R224A, and R213S) to define the role of this domain in early molecular events in the entry pathway. Protease sensitivity assays demonstrated that receptor binding was sufficient to trigger conformational changes in the SU subunit of mutants R213A/K227A and R213S similar to those in the wild-type EnvA, while R213A/R223A/R224A was constitutively sensitive to protease. In contrast, all three receptor-binding domain mutants disrupted receptor-triggered conversion of EnvA to an active, membrane-binding conformation as assessed by liposome flotation assays. Our results demonstrate that mutations in the receptor-binding site can dissociate receptor-triggered conformational changes in the SU subunit from membrane binding. Furthermore, they suggest that communication between the receptor-binding subunit, SU, and the fusogenic subunit, TM, is crucial for efficient activation of the fusogenic state of EnvA. Analysis of these mutants continues earlier observations that binding to the cellular receptor provides the trigger for efficient activation of this pH-independent viral envelope protein. (+info)
Development of a flexible and specific gene delivery system for production of murine tumor models. (3/332)To develop models of human cancer we have expressed the avian retroviral receptor, TVA, under a variety of mammalian promoters in transgenic mice, thus rendering mice susceptible to infection with avian leukosis virus-derived gene vectors. TVA-based retroviral gene transfer offers advantages over current murine models of human cancer. A single transgenic mouse line can be used to evaluate multiple genetic lesions, individually and in combination. Furthermore, mutant genes are introduced somatically into animals, as occurs in the majority of naturally occurring tumors. Because the avian viral vectors replicate only in avian cells, the viral receptor in infected transgenic mouse cells remains available for multiple rounds of infection with different ASLV vectors. We discuss the theoretical and practical aspects of using recombinant avian retroviruses with TVA transgenic mice to generate cancer models. (+info)
An Mpsi-containing heterologous RNA, but not env mRNA, is efficiently packaged into avian retroviral particles. (4/332)Retroviruses preferentially package full-length genomic RNA over spliced viral messages. For most retroviruses, this preference is likely due to the absence of all or part of the packaging signal on subgenomic RNAs. In avian leukosis-sarcoma virus, however, we have shown that the minimal packaging signal, MPsi, is located upstream of the 5' splice site and therefore is present on both genomic and spliced RNAs. We now show that an MPsi-containing heterologous RNA is packaged only 2.6-fold less efficiently than genomic Rous sarcoma virus RNA. Thus, few additional packaging sequences and/or structures exist outside of MPsi. In contrast, we found that env mRNA is not efficiently packaged. These results indicate that either MPsi is not functional on this RNA or the RNA is somehow segregated from the packaging machinery. Finally, deletion of sequences from the 3' end of MPsi was found to reduce the packaging efficiency of heterologous RNAs. (+info)
Secondary structure analysis of a minimal avian leukosis-sarcoma virus packaging signal. (5/332)We previously identified a 160-nucleotide packaging signal, MPsi, from the 5' end of the Rous sarcoma virus genome. In this study, we determine the secondary structure of MPsi by using phylogenetic analysis with computer modeling and heterologous packaging assays of point mutants. The results of the in vivo studies are in good agreement with the computer model. Additionally, the packaging studies indicate several structures which are important for efficient packaging, including a single-stranded bulge containing the initiation codon for the short open reading frame, uORF3, as well as adjacent stem structures. Finally, we show that the L3 stem-loop at the 3' end of MPsi is dispensable for packaging, thus identifying an 82-nucleotide minimal packaging signal, microPsi, composed of the O3 stem-loop. (+info)
The central proline of an internal viral fusion peptide serves two important roles. (6/332)The fusion peptide of the avian sarcoma/leukosis virus (ASLV) envelope protein (Env) is internal, near the N terminus of its transmembrane (TM) subunit. As for most internal viral fusion peptides, there is a proline near the center of this sequence. Robson-Garnier structure predictions of the ASLV fusion peptide and immediate surrounding sequences indicate a region of order (beta-sheet), a tight reverse turn containing the proline, and a second region of order (alpha-helix). Similar motifs (order, turn or loop, order) are predicted for other internal fusion peptides. In this study, we made and analyzed 12 Env proteins with substitutions for the central proline of the fusion peptide. Env proteins were expressed in 293T cells and in murine leukemia virus pseudotyped virions. We found the following. (i) All mutant Envs form trimers, but when the bulky hydrophobic residues phenylalanine or leucine are substituted for proline, trimerization is weakened. (ii) Surprisingly, the proline is required for maximal processing of the Env precursor into its surface and TM subunits; the amount of processing correlates linearly with the propensity of the substituted residue to be found in a reverse turn. (iii) Nonetheless, proteolytically processed forms of all Envs are preferentially incorporated into pseudotyped virions. (iv) All Envs bind receptor with affinity greater than or equal to wild-type affinity. (v) Residues that support high infectivity cluster with proline at intermediate hydrophobicity. Infectivity is not supported by mutant Envs in which charged residues are substituted for proline, nor is it supported by the trimerization-defective phenylalanine and leucine mutants. Our findings suggest that the central proline in the ASLV fusion peptide is important for the formation of the native (metastable) Env structure as well as for membrane interactions that lead to fusion. (+info)
Soluble receptor-induced retroviral infection of receptor-deficient cells. (7/332)Current models of retroviral entry hypothesize that interactions between the host cell receptor(s) and viral envelope protein induce structural changes in the envelope protein that convert it to an active conformation, allowing it to mediate fusion with the membrane. Recent evidence supporting this hypothesis is the demonstration that Tva, the receptor for subgroup A avian sarcoma and leukosis virus (ASLV-A), induces conformational changes in the viral envelope protein. These changes include conversion of the envelope protein to an active, membrane-binding state likely representing a fusogenic conformation. To determine whether binding of the soluble Tva (sTva) receptor was sufficient to activate fully the fusogenic potential of the ASLV-A envelope protein, we have evaluated the ability of ASLV-A to infect receptor-deficient cell lines in the presence of sTva. Soluble receptor efficiently mediated infection of cells devoid of endogenous Tva in a dose-dependent manner, and this infection was dependent absolutely on the addition of sTva. The infectivity of the virus was enhanced dramatically in the presence of the polycationic polymer Polybrene or when centrifugal forces were applied during inoculation, resulting in viral titers comparable to those achieved on cells expressing endogenous receptor. sTva functioned to mediate infection at low concentrations, approaching the estimated binding constant of the receptor and viral envelope protein. These results demonstrate that receptor binding can activate the ASLV-A envelope protein and convert it to a fusogenic conformation competent to mediate the fusion of the viral and cellular membranes. (+info)
Selection of a subgroup A avian leukosis virus [ALV(A)] envelope resistant to soluble ALV(A) surface glycoprotein. (8/332)The host developing resistance to retroviral infection is believed to be a major force in the evolution of multiple receptor usage by retroviruses. The avian leukosis-sarcoma virus (ALV) group of retroviruses provides a powerful system for studying the envelope-receptor interactions involved in retrovirus entry; different members of this group of closely related viruses use distinct cellular receptors. Analysis of the ALV envelope subgroups suggests that the different ALVs evolved from a common ancestor by mutations in the env gene. Cells and animals that express subgroup A ALV envelope glycoproteins are highly resistant to ALV(A) infection due to receptor interference. In this study, we tested whether expression of a soluble form of subgroup A surface glycoprotein (SU) would result in receptor interference and whether this interference would select for resistant viruses with altered receptor usage. Chicken cells expressing the secreted ALV(A) SU immunoadhesin SU(A)-rIgG, which contains the subgroup A SU domain fused to the constant region of a rabbit immunoglobulin (IgG) heavy chain, showed significant receptor interference. A variant virus resistant to SU(A)-rIgG receptor interference was obtained. This virus had a six-amino-acid deletion in the subgroup A hr1 that altered receptor usage. This approach may identify regions of SU that play a critical role in receptor specificity. (+info)
Sequence-specific DNA binding by the v-erbA oncogene protein of avian erythroblastosis virus<...
TY - JOUR. T1 - Sequence-specific DNA binding by the v-erbA oncogene protein of avian erythroblastosis virus. AU - Bonde, Beverly Geary. AU - Privalsky, Martin L.. PY - 1990. Y1 - 1990. N2 - The v-erbA oncogene, a transduced copy of a thyroid hormone receptor, plays an important role in establishment of the transformed cell phenotype induced by avian erythroblastosis virus. The ability of thyroid hormone receptors to bind to specific sites on chromatin and to thereby modify the expression of adjacent target genes is a crucial element in their mechanism of action in the normal cell. The v-erbA protein also bound at high affinity to a set of DNA fragments recognized by the rat thyroid hormone receptor, but the relative affinity of the v-erbA protein for the different binding sites was distinct from that previously reported for the thyroid hormone receptors.. AB - The v-erbA oncogene, a transduced copy of a thyroid hormone receptor, plays an important role in establishment of the transformed cell ...
Erythroblastosis faetalis | Article about Erythroblastosis faetalis by The Free Dictionary
anti-ERG antibody, Internal | GeneTex
Recombinant Human V-erb-b2 Erythroblastic Leukemia Viral Oncogene Homolog 3 (avian) ERBB3-2514H - Creative BioMart
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Leukosis-sarcoma neoplastic diseases | definition of leukosis-sarcoma neoplastic diseases by Medical dictionary
Looking for online definition of leukosis-sarcoma neoplastic diseases in the Medical Dictionary? leukosis-sarcoma neoplastic diseases explanation free. What is leukosis-sarcoma neoplastic diseases? Meaning of leukosis-sarcoma neoplastic diseases medical term. What does leukosis-sarcoma neoplastic diseases mean?
Avian Sarcoma Virus Transformed Hamster Cells made Resistant to Ethidium Bromide | Journal of Cell Science
Hamster cells transformed with the Schmidt-Ruppin strain of avian sarcoma virus were selected for resistance to ethidium bromide (EB). The resistant cell lines proliferated in the presence of up to 30 µg/ml EB.. From avian sarcoma virus-transformed hamster cells already resistant to bromodeoxy-uridine (BrdU), ethidium bromide-resistant cells which were able to grow in 10 µg/ml EB were also prepared. These cells remain deficient in thymidine kinase activity and are suitable for selective preparation of hybrid cells.. The EB resistance was genetically stable. The EB-resistant cell lines, and doubly resistant cells (BrdU, EB) showed no differences in mitochondrial ultrastructure compared with the original cell lines. Thymidine incorporation into mitochondrial DNA was not influenced by EB resistance.. All resistant cell lines, including the doubly resistant cell line, contained the avian sarcoma virus genome. The number of cells needed for positive rescue experiments for avian sarcoma virus genome ...
V erbb genes Dictionary Definition and More from Dictionary.net
The proto- oncogene c- erbB- 1 codes for the epidermal growth factor receptor. Its name originates from the viral homolog v- erbB which was isolated from an avian erythroblastosis virus ( AEV) where it was contained as a fragment of the chicken c- ErbB- 1 gene lacking the amino- terminal ligand- binding domain. Overexpression of erbB- 1 genes occurs in a wide range of tumors, commonly squamous carcinomas of various sites and less commonly adenocarcinomas. The human c- erbB- 1 gene is located in the chromosomal region 7p14 and 7p12 ...
Control of erythroid differentiation: asynchronous expression of the anion transporter and the peripheral components of the...
Chicken erythroblasts transformed with avian erythroblastosis virus or S13 virus provide suitable model systems with which to analyze the maturation of immature erythroblasts into erythrocytes. The transformed cells are blocked in differentiation at around the colony-forming unit-erythroid stage of development but can be induced to differentiate in vitro. Analysis of the expression and assembly of components of the membrane skeleton indicates that these cells simultaneously synthesize alpha-spectrin, beta-spectrin, ankyrin, and protein 4.1 at levels that are comparable to those of mature erythroblasts. However, they do not express any detectable amounts of anion transporter. The peripheral membrane skeleton components assemble transiently and are subsequently rapidly catabolized, resulting in 20-40-fold lower steady-state levels than are found in maturing erythrocytes. Upon spontaneous or chemically induced terminal differentiation of these cells expression of the anion transporter is initiated ...
E26 avian leukemia oncogene 2, 3' domain Biomolecules | Biocompare
Structural and functional characterization of the Fujinami sarcoma virus transforming protein - UBC Library Open Collections
Items where Year is 1981 - Enlighten: Publications
Vogt, P.K., Neil, J.C. , Moscovici, C. and Breitman, M.L. (1981) PRCII, a representative of a new class of avian sarcoma viruses. In: Neth, R., Gallo, R.C., Graf, T., Mannweiler, K. and Winkler, K. (eds.) Modern Trends in Human Leukemia IV. Series: Haematology and blood transfusion, 26. Springer, pp. 424-428. ISBN 9783540106227 (doi:10.1007/978-3-642-67984-1_77) ...
anti-ETS1 (phospho Thr38) antibody | GeneTex
V-ets erythroblastosis virus E26 oncogene homolog 2 | definition of v-ets erythroblastosis virus E26 oncogene homolog 2 by...
Looking for online definition of v-ets erythroblastosis virus E26 oncogene homolog 2 in the Medical Dictionary? v-ets erythroblastosis virus E26 oncogene homolog 2 explanation free. What is v-ets erythroblastosis virus E26 oncogene homolog 2? Meaning of v-ets erythroblastosis virus E26 oncogene homolog 2 medical term. What does v-ets erythroblastosis virus E26 oncogene homolog 2 mean?
Erythroblastosis fetalis - definition of erythroblastosis fetalis by The Free Dictionary
Define erythroblastosis fetalis. erythroblastosis fetalis synonyms, erythroblastosis fetalis pronunciation, erythroblastosis fetalis translation, English dictionary definition of erythroblastosis fetalis. n. A severe hemolytic disease of a fetus or newborn infant caused by the production of maternal antibodies against the fetal red blood cells, usually...
Erythroblastosis fetalis. Causes, symptoms, treatment Erythroblastosis fetalis
Amplification and enhanced expression of the epidermal growth factor receptor gene in A431 human carcinoma cells | Science
The sequence of the human epidermal growth factor (EGF) receptor shows great homology with the avian erythroblastosis virus v-erb B oncogene, raising the possibility that the receptor gene is identical to the c-erb B protooncogene. Human A431 epidermoid carcinoma cells, which have an unusually high number of EGF receptors, were examined to determine whether elevated EGF receptor levels correlate with gene amplification. Southern blots of genomic DNAs from A431 and other human cell lines were probed with either a v-erb B gene fragment or a human EGF receptor complementary DNA clone (pE7), previously isolated from an A431 complementary DNA library. When either probe was used to analyze Eco RI- or Hind III-generated DNA fragments, EGF receptor DNA sequences were amplified about 30-fold in A431. Differences in the banding pattern of A431 DNA fragments relative to normal fibroblast DNA indicate the occurrence of a rearrangement in the region of the receptor gene. Furthermore, A431 cells contain a ...
"Molecular Cloning of Avian Sarcoma Virus CT10 and Characterization of " by Bruce J. Mayer
Four previously uncharacterized avian sarcoma viruses were screened and two of these, RPL30 and CTIO, were found to encode apparently novel oncogenes. Biologically active CTIO DNA was molecularly cloned and the nucleotide sequence was determined. The CTIO genome encodes a gag-fusion polypeptide of 47 kilodaltons, termed p47gag-crk. This protein contains blocks of sequence similarity to a noncatalytic, potentially regulatory region found in the nonreceptor tyrosine kinases, a phosphoinositide-specific phospholipase C, and the ras GTPase activator protein; no homology was found to any known catalytic domain. Potential roles for the homologous domains, termed SH2 and SH3, in normal signal transduction and in the biological activity of p47gag-crk are discussed. Biochemical data demonstrated that phosphotyrosine levels on at least three cellular proteins were greatly elevated in CTI0-infected cells, and that a tyrosine kinase activity was immunoprecipitated in association with p47gag-crk. A specific
erythroblastosis fetalis - Page 2 - Biology-Online
At the first baby, there are no antibodies against Rh+, while birth, blood of the baby and the mother mixes and there are some antibodies produced, And those antibodies make the second baby die or born with some abnormalities. IgG can pass through placenta. Actually erythroblastosis fetalis can also be defined as the lysis of fetal RBCs by maternal IgGs ...
"Erythroblastosis fetalis: Pathogenesis and prognosis. A study of clini" by John Holcombe Austin
Erythroblastosis Fetalis - Causes, Symptoms, Diagnosis, Treatment & Prevention
anti-V-Myc Myelocytomatosis Viral Oncogene Homolog (Avian) (MYC) (pThr358), (AA 340-385) antibody (Cy5.5) ABIN752598 from...
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MYC | SelfDecode | Genome Analysis
hypothetical protein, transcription factor protein, A306_09622, anon-WO03040301.171, avian myelocytomatosis viral oncogene homolog, avian myelocytomatosis viral (v-myc) oncogene homolog, bHLHe39, bHLHe57, cellular myelocytomatosis oncogene, CG10798 gene product from transcript CG10798-RB, CG10798-PA, CG10798-PB, class E basic helix-loop-helix protein 39, cmyc, c-MYC, c-myc20, c-Myc-a, c-Myc-b, c-myc-like protein, c-myc proto-oncogene, diminuitive, diminutive, DM, dm/dMyc, Dmel_CG10798, dm/myc, d-myc, dMYC, dmyc1, EG:BACN5I9.1, EGK_19271, lethal (1) G0354, lethal (1) G0359, MDA_GLEAN10014535, mMyc, MRTL, Myc2, myc-a, myc-b, MYCC, Myc-PA, Myc-PB, myc proto-oncogene protein, myc-related translation/localization regulatory factor, myelocytomatosis oncogene, myelocytomatosis viral oncogene homolog, N303_07797, N307_12984, N309_06569, Niard, Nird, oncoprotein myc, PAL_GLEAN10003365, Proto-oncogene c-Myc, RNCMYC, transcription factor Myc, transcription factor p64, TREES_T100017263, uncharacterized ...
Mouse MYC(V-Myc Myelocytomatosis Viral Oncogene Homolog) ELISA Kit - Noveon
Description: Enzyme-linked immunosorbent assay based on the Double-antibody Sandwich method for detection of Rat V-Myc Myelocytomatosis Viral Oncogene Homolog (MYC) in samples from Serum, plasma, tissue homogenates, cell lysates and other biological fluids. with no significant corss-reactivity with analogues from other species ...
A noncatalytic domain conserved among cytoplasmic protein-tyrosine ki" by I Sadowski, J C. Stone et al.
Proteins encoded by oncogenes such as v-fps/fes, v-src, v-yes, v-abl, and v-fgr are cytoplasmic protein tyrosine kinases which, unlike transmembrane receptors, are localized to the inside of the cell. These proteins possess two contiguous regions of sequence identity: a C-terminal catalytic domain of 260 residues with homology to other tyrosine-specific and serine-threonine-specific protein kinases, and a unique domain of approximately 100 residues which is located N terminal to the kinase region and is absent from kinases that span the plasma membrane. In-frame linker insertion mutations in Fujinami avian sarcoma virus which introduced dipeptide insertions into the most stringently conserved segment of this N-terminal domain in P130gag-fps impaired the ability of Fujinami avian sarcoma virus to transform rat-2 cells. The P130gag-fps proteins encoded by these transformation-defective mutants were deficient in protein-tyrosine kinase activity in rat cells. However v-fps polypeptides derived
Localization of the growth hormone gene to the distal half of mouse c" by R W. Elliott, B K. Lee et al.
A DNA fragment size variant for the growth hormone gene, Gh, has been identified among inbred strains of mice. The inbred strains SM/J and CAST/Ei carry the less frequent allele Ghb and 11 other strains carry the Gha allele. Segregation analysis of data from two crosses involving SM/J and NZB/BINJ and a cross involving BALB/cJ and CAST/Ei confirmed the assignment of Gh to mouse chromosome 11 and placed the locus 2.6 +/- 1.8 map units distal to Erba (avian erythroblastosis oncogene A), a position consistent with the assignment of the Gh locus to the q22-q24 region of chromosome 17 on the human map. Segregation analysis also refined the location of Sparc (secreted acidic cysteine-rich glycoprotein) on mouse chromosome 11 to a position 16.7 +/- 4.2 map units proximal to Evi-2 (ecotropic viral integration site 2).
S13, a rapidly oncogenic replication-defective avian retrovirus
The avian leukemia sarcoma virus S13 transforms chicken and Japanese quail embryo fibroblasts and chicken erythroid cells in tissue culture. S13-induced erythroid transformation requires culture conditions suitable for the growth of normal erythroid precursors (H. Beug and M. J. Hayman (1984), Cell 36, 963-972). S13-transformed erythroid colonies contain a high percentage of cells that differentiate in absence of erythropoietin. S13 is defective in pol and env functions but can code for a complete set of gag proteins. Nonproducer cell clones transformed by S13 release a noninfectious viral particle containing gag but no functional env or pol proteins. They also synthesize a transformation-specific protein of 155,000 molecular weight. This protein reacts with antibody to viral envelope glycoproteins and appears to represent onc as well as env sequences. The 155,000-molecular weight env-linked protein does not cross react immunologically with an antiserum against the v-erb A and v-erb B gene ...
DAXX - ddPCR Primer Pair - EvaGreen - Digital PCR | PrimePCR | Bio-Rad
Gene Information This gene encodes a multifunctional protein that resides in multiple locations in the nucleus and in the cytoplasm. It interacts with a wide variety of proteins such as apoptosis antigen Fas centromere protein C and transcription factor erythroblastosis virus E26 oncogene homolog 1. In the nucleus the encoded protein functions as a potent transcription repressor that binds to sumoylated transcription factors. Its repression can be relieved by the sequestration of this protein into promyelocytic leukemia nuclear bodies or nucleoli. This protein also associates with centromeres in G2 phase. In the cytoplasm the encoded protein may function to regulate apoptosis. The subcellular localization and function of this protein are modulated by post-translational modifications including sumoylation phosphorylation and polyubiquitination. Alternative splicing results in multiple transcript variants. [provided by RefSeq Nov 2008]. ...
Oncoviruses and monoclonal antibody production | Veterinary Record
JAM NUT RECEPTACLE: YACT24JE06AEV00100 DEUTSCH | TE Connectivity
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Estrogen-dependent signaling in a molecularly distinct subclass of aggressive prostate cancer. | Broad Institute
BACKGROUND: The majority of prostate cancers harbor gene fusions of the 5-untranslated region of the androgen-regulated transmembrane protease serine 2 (TMPRSS2) promoter with erythroblast transformation-specific transcription factor family members. The common fusion between TMPRESS2 and v-ets erythroblastosis virus E26 oncogene homolog (avian) (ERG) is associated with a more aggressive clinical phenotype, implying the existence of a distinct subclass of prostate cancer defined by this fusion.. METHODS: We used complementary DNA-mediated annealing, selection, ligation, and extension to determine the expression profiles of 6144 transcriptionally informative genes in archived biopsy samples from 455 prostate cancer patients in the Swedish Watchful Waiting cohort (1987-1999) and the United States-based Physicians() Health Study cohort (1983-2003). A gene expression signature for prostate cancers with the TMPRSS2-ERG fusion was determined using partitioning and classification models and used in ...
Incidence of avian leukosis virus infection in broiler stocks...
Bursal Stem Cells as Targets for myc-Induced Preneoplastic Proliferation and Maturation Arrest | SpringerLink
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CCD-34Lu ATCC ® CRL-1491™ Homo sapiens lung normal
Reconstitution of retroviral fusion and uncoating in a cell- 2020
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Kaoru Fujinami; Shuhei Kameya; Sachiko Kikuchi; Shinji Ueno; Mineo Kondo; Takaaki Hayashi; Kei Shinoda; Shigeki Machida; Kazuki Kuniyoshi; Yuichi Kawamura; Masakazu Akahori; Kazutoshi Yoshitake; Satoshi Katagiri; Ayami Nakanishi; Hiroyuki Sakuramoto; Yoko Ozawa; Kazuo Tsubota; Kunihiko Yamaki; Atsushi Mizota; Hiroko Terasaki; Yozo Miyake; Takeshi Iwata; Kazushige ...
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Difference between revisions of "BISC219/F12: RNAi Lab 7" - OpenWetWare
1) Make sure the Power Button on the right front of the imager shows a green light. If not press it until the green light comes on and wait 5-10 min for warm up. 2) Open the UV transilluminator drawer on the lower front of the imager and make sure that the XcitaBlue Conversion Screen is in place. If not find it and position it covering the glass. Clean it with water and a paper towel if necessary. 3) Position your gel in the center of the glass. 4) Close the drawer, remove gloves, and wash your hands before using the computer to the left of the imager. 5) Open the ImageLab 4.0.1 software by double clicking on the icon on the computer desktop 6) Find and open the Protocol called SybrSafe under Recent Protocols or from the Open Menu. Double click to open it. 7) Click Position Gel (yellow button) to check the position of your gel. 8) Click Run Protocol (green button) to take the photo. 9) To Save your image (if you are not going to analyze it quantitatively), find or make a folder for your work in ...
Immune Stimulation of Sensitized Chicken Lymphocytes by Avian Retrovirus Proteins | Microbiology Society
Summary Peripheral blood lymphocytes of chickens bearing tumours induced by avian sarcoma virus can be specifically stimulated to divide by the crude culture fluids of virus-infected cells. In this communication, we show that relevant antigenic activity apparently resides in each of the internal virus proteins p15 and p27. The ability of infectious culture fluids to be mitogenic for sensitized lymphocytes is greatly reduced following treatment with antibodies specific for either total avian myeloblastosis virus (AMV) protein or for p27.
Identification and characterization of avian retroviruses in chicken
SQUARE FLANGE RECEPTACLE: YACT20JB98AEV00100 DEUTSCH | TE Connectivity
Synapse - AEV | Broadcast
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Avian sarcoma leukosis virus
Equine foamy virus
Taxonomic list of viruses
List of MeSH codes (B04)
... alpharetrovirus MeSH B04.820.650.070.250 --- erythroblastosis virus, avian MeSH B04.820.650.070.500 --- leukosis virus, avian ... alpharetrovirus MeSH B04.909.574.807.070.250 --- erythroblastosis virus, avian MeSH B04.909.574.807.070.500 --- leukosis virus ... alpharetrovirus MeSH B04.909.777.731.070.250 --- erythroblastosis virus, avian MeSH B04.909.777.731.070.500 --- leukosis virus ...
List of genera of viruses
Xenotropic murine leukemia virus-related virus
Sequence-specific DNA binding by the v-erbA oncogene protein of avian erythroblastosis virus<...
Alpharetrovirus - Wikipedia
Retrovirus - Wikipedia
Retrovirus - Wikipedia
Virus-Taxonomie - Wikipedia
retrovirus facts, information, pictures | Encyclopedia.com articles about retrovirus
Virus Taxonomy: Ninth Report of the International Committee on Taxonomy of Viruses, Book by Andrew MQ King (Other) | chapters...
Avian carcinoma Mill Hill virus 2 - Wikispecies
Retroviridae - The Full Wiki
Frontiers | MicroRNAs in the Host Response to Viral Infections of Veterinary Importance | Veterinary Science
Frontiers | The roles of lipids and nucleic acids in HIV-1 assembly | Microbiology
ASMscience | Retroviral DNA Transposi
Nucleic Acid Binding by Mason-Pfizer Monkey Virus CA Promotes Virus Assembly and Genome Packaging | Journal of Virology
Ty3 Nuclear Entry Is Initiated by Viruslike Particle Docking on GLFG Nucleoporins | Journal of Virology
Discovery of endogenous viruses | Philosophical Transactions of the Royal Society B: Biological Sciences
Lymphoid Leukosis in Poultry - Poultry - Merck Veterinary Manual
Find Research Outputs - Northwestern Scholars
Nomenclature for endogenous retrovirus (ERV) loci | Retrovirology | Full Text
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Proviral integrations and expression of endogenous Avian leucosis virus during long term selection for high and low body weight...
DeCS 2007 - Deleted terms
The mechanism of budding of retroviruses from cell membranes - Fingerprint - Northwestern Scholars
DeCS 2002 - Changed terms
Table 1 - Bovine Leukemia Virus DNA in Human Breast Tissue - Volume 20, Number 5-May 2014 - Emerging Infectious Diseases...
A minor tyrosine phosphorylation site located within the CAIN domain plays a critical role in regulating tissue-specific...
TY - JOUR. T1 - A minor tyrosine phosphorylation site located within the CAIN domain plays a critical role in regulating tissue-specific transformation by erbB kinase. AU - Chan, C. M.. AU - Shu, H. K.G.. AU - Ravi, L.. AU - Pelley, R. J.. AU - Shu, H.. AU - Kung, H. J.. PY - 1995/1/1. Y1 - 1995/1/1. N2 - Avian c-erbB encodes a protein that is homologous to the human epidermal growth factor receptor. Truncation of the amino-terminal, ligand-binding domain of this receptor results in an oncogene product which is a potent inducing agent for erythroleukemias but not fibrosarcomas in chickens. Here we show that mutation of a single tyrosine residue, p5, in the carboxyl terminus of the erbB oncogene product allows it to become sarcomagenic in vivo and to transform fibroblasts in vitro. Mutations of other autophosphorylation sites do not generate comparable effects. The increased transforming activity of the p5 mutant is accompanied by an elevated level of mitogen-activated protein kinase ...
- Alpharetrovirus is a genus of the retroviridae family. (wikipedia.org)
- Genus Tequatrovirus ( T4virus , T4-ähnliche Viren , en. (wikipedia.org)
- The International Committee on Taxonomy of Viruses has designated avian leukosis virus as the type species within the Alpharetrovirus genus of the family Retroviridae . (merckvetmanual.com)
- This is a retrovirus of the genus Alpharetrovirus . (everything2.com)
- These platforms can be used to monitor clonal dynamics in individual subjects over time, across multiple subjects and species treated with the same vectors or across different vector types including gammaretrovirus, lentivirus, foamy virus and alpharetrovirus vectors to compare patterns of genomic integration. (fhcrc.org)