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  • lactose
  • Since gallactose is what the cell wants the most then the other metabolic operons(like lactose) should be off so any sugar that isn't gallactose is secondary? (biology-online.org)
  • Although glucose is the preferred carbon source for most bacteria, the lac operon allows for the effective digestion of lactose when glucose is not available through the activity of beta-galactosidase. (wikipedia.org)
  • prokaryotes
  • Moreno-Hagelsieb, G., Collado-Vides, J.: A powerful non-homology method for the prediction of operons in prokaryotes. (springer.com)
  • Originally, operons were thought to exist solely in prokaryotes (which includes organelles like plastids that are derived from bacteria), but since the discovery of the first operons in eukaryotes in the early 1990s, more evidence has arisen to suggest they are more common than previously assumed. (wikipedia.org)
  • Operons occur primarily in prokaryotes but also in some eukaryotes, including nematodes such as C. elegans and the fruit fly, Drosophila melanogaster. (wikipedia.org)
  • Nobel Prize in P
  • The 1965 Nobel Prize in Physiology and Medicine was awarded to François Jacob, André Michel Lwoff and Jacques Monod for their discoveries concerning the operon and virus synthesis. (wikipedia.org)
  • Their work on the lac operon won them the Nobel Prize in Physiology in 1965. (wikipedia.org)
  • proteins
  • The expression of many gene products required during the early stages of Bacillus subtilis sporulation is regulated by sinIR operon proteins. (mendeley.com)
  • amino
  • Threonine is one of at least 6 amino acid operons are known to be regulated by attenuation. (wikipedia.org)
  • In each case the leader also codes for very short peptide sequence that is rich in the end product amino acid of the operon. (wikipedia.org)
  • At least 6 amino acid operons are known to be regulated by attenuation. (wikipedia.org)
  • synthesis
  • The gua operon is responsible for regulating the synthesis of guanosine mono phosphate(GMP), a purine nucleotide, from inosine monophosphate (IMP or inosinate). (wikipedia.org)
  • metabolic
  • The fitness function is created by using intergenic distance of local entropy-minimization, participation of the same metabolic pathway, log-likelihood of COG gene functions and correlation coefficient of microarray expression data, which have been used individually for predicting operons. (springer.com)
  • I'm studying for the final tomorrow and we are focusing a lot on the lac operon series and some of the metabolic processes of sugars. (biology-online.org)
  • The operon must respond to changes in the metabolic state of the cell. (wikipedia.org)
  • regulate
  • These results, combined with estimates of intracellular Ni2+ and NikR concentrations, lead to the conclusion that NikR is able to sense Ni2+ and regulate the nik operon expression over a range of intracellular Ni2+ concentrations from as low as one to as high as 10,000 molecules per cell. (wikipedia.org)
  • ArsD and ArsR work together to regulate the ars operon. (wikipedia.org)
  • homeostasis
  • The gab operon is also known to contribute to polyamine homeostasis during nitrogen-limited growth and to maintain high internal glutamate concentrations under stress conditions. (wikipedia.org)
  • The gab operon contributes to homeostasis of polyamines such as putrescine, during nitrogen-limited growth. (wikipedia.org)
  • Hence along with histidase, glnALG operon maintains homeostasis within the cell. (wikipedia.org)
  • promoters
  • The biotin operon is transcribed bidirectionally, from overlapping promoters controlled by the same operator. (asmscience.org)
  • glnG: encodes NRI , which regulates the expression of glnALG operon at three promoters, which are glnAp1, glnAp2 and glnLp. (wikipedia.org)
  • The expression of the glnALG operon is regulated by the NRI at three promoters: glnAp1, glnAp2 and glnLp. (wikipedia.org)
  • plasmid
  • At the top of this page is a plasmid map for one of the many lac-operon based bacterial plasmids used for determining if the plasmid has successfully incorporated the DNA we're trying to insert. (google.com)
  • structure
  • Different species Burkholderia and Achromobacter strains all demonstrated similar BiofilmReg operon structure. (hindawi.com)
  • The alpha operon ribosome binding site in bacteria is surrounded by this complex pseudoknotted RNA structure. (wikipedia.org)