Pyrimidine metabolism: Pyrimidine biosynthesis occurs both in the body and through organic synthesis.Uridine triphosphateGlcA-beta-(1-2)-D-Man-alpha-(1-3)-D-Glc-beta-(1-4)-D-Glc-alpha-1-diphospho-ditrans,octacis-undecaprenol 4-beta-mannosyltransferase: GlcA-beta-(1->2)-D-Man-alpha-(1->3)-D-Glc-beta-(1->4)-D-Glc-alpha-1-diphospho-ditrans,octacis-undecaprenol 4-beta-mannosyltransferase (, GumI) is an enzyme with system name GDP-mannose:GlcA-beta-(1->2)-D-Man-alpha-(1->3)-D-Glc-beta-(1->4)-D-Glc-alpha-1-diphospho-ditrans,octacis-undecaprenol 4-beta-mannosyltransferase. This enzyme catalyses the following chemical reactionCis-acting replication element: Cis-acting replication elements brings together the 5' and 3' ends during replication of positive sense single stranded RNA viruses (for example Picornavirus, Flavivirus, coronavirus, togaviruses, Hepatitis C virus) and double stranded RNA viruses (for example rotavirus and reovirus).CytidineUracil in DNA: DNA, or deoxyribonucleic acid, is the hereditary material in humans and almost all other organisms.Nucleoside analogue: Nucleoside analogues are nucleosides which contain a nucleic acid analogue and a sugar. Nucleotide analogs are nucleotides which contain a nucleic acid analogue, a sugar and one to three phosphate groups.Uridine diphosphate galactosePolyoxins: Polyoxins are a group of nucleoside antibiotics composed of heterocyclic moieties containing nitrogen. An example is Polyoxin B.Uridine diphosphate glucuronic acidA-1,4-glucan-protein synthase (UDP-forming): Alpha-1,4-glucan-protein synthase (UDP-forming) (, UDP-glucose:protein glucosyltransferase, glycogen initiator synthase, UDPGlc:protein transglucosylase, UPTG, uridine diphosphoglucose protein transglucosylase I, proglycogen synthase, uridine diphosphoglucose-protein 4-alpha-glucosyltransferase, uridine diphosphoglucose-protein glucosyltransferase, UDP-glucose protein transglucosylase, UDP-glucose-protein glucosyltransferase, uridine diphosphate glucose-protein transglucosylase I) is an enzyme with system name UDP-glucose:protein 4-alpha-glucosyltransferase. This enzyme catalyses the following chemical reactionSoyasapogenol glucuronosyltransferase: Soyasapogenol glucuronosyltransferase (, UGASGT) is an enzyme with system name UDP-D-glucuronate:soyasapogenol 3-O-D-glucuronosyltransferase. This enzyme catalyses the following chemical reactionConcentrative nucleoside transporter: Human concentrative nucleoside transporters include SLC28A1, SLC28A2 and SLC28A3 proteins. SLC28A2 is a purine-specific Na+-nucleoside cotransporter localised to the bile canalicular membrane.YjdF RNA motifOrotic acidRRNA small subunit pseudouridine methyltransferase Nep1: RRNA small subunit pseudouridine methyltransferase Nep1 (, Nep1, nucleolar essential protein 1) is an enzyme with system name S-adenosyl-L-methionine:18S rRNA (pseudouridine1191-N1)-methyltransferase. This enzyme catalyses the following chemical reactionUDP-D-xylose:beta-D-glucoside alpha-1,3-D-xylosyltransferase: UDP-D-xylose:beta-D-glucoside alpha-1,3-D-xylosyltransferase (, beta-glucoside alpha-1,3-xylosyltransferase) is an enzyme with system name UDP-alpha-D-xylose:beta-D-glucoside 3-alpha-D-xylosyltransferase. This enzyme catalyses the following chemical reactionArabinosyltransferase: In molecular biology, an arabinosyltransferase is a transferase enzyme acting upon arabinose."Reconstitution of functional mycobacterial arabinosyltransferase AftC proteoliposome and assessment of decaprenylphosphorylarabinose analogues as arabinofuranosyl donors.Thymidine diphosphateDeoxyuridineTritium illumination: Tritium illumination is the use of gaseous tritium, a radioactive isotope of hydrogen, to create visible light. Tritium emits electrons through beta decay, and, when they interact with a phosphor material, fluorescent light is created, a process called radioluminescence.Burst kinetics: Burst kinetics is a form of enzyme kinetics that refers to an initial high velocity of enzymatic turnover when adding enzyme to substrate. This initial period of high velocity product formation is referred to as the "Burst Phase".Orotidine 5'-phosphate decarboxylaseMizoribineNTP binding site: An NTP binding site is a type of binding site found in nucleoside monophosphate (NMP) kinases, N can be adenosine or guanosine. A P-loop is one of the structural motifs common for nucleoside triphosphate (NTP) binding sites, it interacts with the bound nucleotide's phosphoryl groups.Galactose epimerase deficiencyArchaeosine synthase: Archaeosine synthase (, ArcS, TgtA2, MJ1022 (gene), glutamine:preQ0-tRNA amidinotransferase) is an enzyme with system name L-glutamine:7-cyano-7-carbaguanine aminotransferase. This enzyme catalyses the following chemical reactionT-box leaderPhosphotransferase: Phosphotransferases are a category of enzymes (EC number 2.7) that catalyze phosphorylation reactions.Wobble base pairUridine diphosphateColes PhillipsSymmetry element: A symmetry element is a point of reference about which symmetry operations can take place. In particular, symmetry elements can be centers of inversion, axes of rotation and mirror planes.PyrazolopyrimidineRNTP: A ribonucleoside tri-phosphate (rNTP) is a ribonucleoside with 3 phosphate groups. rNTPs are the building blocks of RNA synthesis as well as the synthesis of primers in DNA replication.Adenosine receptor: The adenosine receptors (or P1 receptors) are a class of purinergic G protein-coupled receptors with adenosine as endogenous ligand.List of strains of Escherichia coli: Escherichia coli is a well studied bacterium that was first identified by Theodor Escherich, after whom it was later named.Equilibrative nucleoside transporter: The equilibrative nucleoside transporter (ENT) family, also known as SLC29, is a group of plasmalemmal transport proteins which transport nucleoside substrates like adenosine into cells. There are four known ENTs, designated ENT1, ENT2, ENT3, and ENT4.Nucleic acid structure: Nucleic acid structure refers to the structure of nucleic acids such as DNA and RNA. Chemically speaking, DNA and RNA are very similar.Abscisate beta-glucosyltransferase: Abscisate beta-glucosyltransferase (, ABA-glucosyltransferase, ABA-GTase, AOG) is an enzyme with system name UDP-D-glucose:abscisate beta-D-glucosyltransferase. This enzyme catalyses the following chemical reactionTRNA (guanine26-N2/guanine27-N2)-dimethyltransferase: TRNA (guanine26-N2/guanine27-N2)-dimethyltransferase (, Trm1, tRNA (N2,N2-guanine)-dimethyltransferase, tRNA (m2(2G26) methyltransferase, Trm1[tRNA (m2(2)G26) methyltransferase]) is an enzyme with system name S-adenosyl-L-methionine:tRNA (guanine26-N2/guanine27-N2)-dimethyltransferase. This enzyme catalyses the following chemical reactionAlpha-D-ribose 1-methylphosphonate 5-triphosphate synthase: Alpha-D-ribose 1-methylphosphonate 5-triphosphate synthase () is an enzyme with system name ATP:methylphosphonate 5-triphosphoribosyltransferase. This enzyme catalyses the following chemical reactionMediated transportSuraminSteptoean positive carbon isotope excursion: The Steptoean Positive Carbon Isotope Excursion (SPICE) was a geological event which occurred about 500 million years ago at the end of the Cambrian Period. The SPICE event was a sudden reversal of the anoxia (lack of oxygen) that had steadily spread throughout the oceans during the Cambrian which also affected the atmosphere.LodenosineSpecificity constant: In the field of biochemistry, the specificity constant (also called kinetic efficiency or k_{cat}/K_{M}), is a measure of how efficiently an enzyme converts substrates into products. A comparison of specificity constants can also be used as a measure of the preference of an enzyme for different substrates (i.MT-RNR2: Mitochondrially encoded 16S RNA (often abbreviated as 16S) is a mitochondrial ribosomal RNA (rRNA) that in humans is encoded by the MT-RNR2 gene. The MT-RNR2 gene also encodes the Humanin polypeptide that has been the target of Alzheimer's disease research.Inhibitor protein: The inhibitor protein (IP) is situated in the mitochondrial matrix and protects the cell against rapid ATP hydrolysis during momentary ischaemia. In oxygen absence, the pH of the matrix drops.DipyridamoleGlutamate-1-semialdehydeGalactoseTransfer-messenger RNA: Transfer-messenger RNA (abbreviated tmRNA, also known as 10Sa RNA and by its genetic name SsrA) is a bacterial RNA molecule with dual tRNA-like and messenger RNA-like properties. The tmRNA forms a ribonucleoprotein complex (tmRNP) together with Small Protein B (SmpB), Elongation Factor Tu (EF-Tu), and ribosomal protein S1.Ap4A: Diadenosine tetraphosphate or Ap4A is a putative alarmone, ubiquitous in nature being common to everything from bacteria to humans. Adenosine polyphosphates are capable of inducing multiple physiological effects.DNA binding site: DNA binding sites are a type of binding site found in DNA where other molecules may bind. DNA binding sites are distinct from other binding sites in that (1) they are part of a DNA sequence (e.Trypanosoma bruceiPurine nucleotide cycle: The Purine Nucleotide Cycle is a metabolic pathway in which fumarate is generated from aspartate in order to increase the concentration of Krebs cycle intermediates.Salway, J.Liver sinusoid: A liver sinusoid is a type of sinusoidal blood vessel (with fenestrated, discontinuous endothelium) that serves as a location for the oxygen-rich blood from the hepatic artery and the nutrient-rich blood from the portal vein.SIU SOM Histology GICarbon-12: Carbon-12 is the more abundant carbon of the two stable isotopes, amounting to 98.93% of the element carbon; its abundance is due to the triple-alpha process by which it is created in stars.Simon–Ehrlich wager: Julian L. Simon and Paul Ehrlich entered in a widely followed scientific wager in 1980, betting on a mutually agreed-upon measure of resource scarcity over the decade leading up to 1990.DNA condensation: DNA condensation refers to the process of compacting DNA molecules in vitro or in vivo. Mechanistic details of DNA packing are essential for its functioning in the process of gene regulation in living systems.Ribose 5-phosphateAutoradiograph: An autoradiograph is an image on an x-ray film or nuclear emulsion produced by the pattern of decay emissions (e.g.