Biology:RRAGB

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Short description: Protein-coding gene in the species Homo sapiens


A representation of the 3D structure of the protein myoglobin showing turquoise α-helices.
Generic protein structure example

Ras-related GTP-binding protein B is a protein that in humans is encoded by the RRAGB gene.[1][2][3]

Ras-homologous GTPases constitute a large family of signal transducers that alternate between an activated, GTP-binding state and an inactivated, GDP-binding state. These proteins represent cellular switches that are operated by GTP-exchange factors and factors that stimulate their intrinsic GTPase activity. All GTPases of the Ras superfamily have in common the presence of six conserved motifs involved in GTP/GDP binding, three of which are phosphate-/magnesium-binding sites (PM1-PM3) and three of which are guanine nucleotide-binding sites (G1-G3). Transcript variants encoding distinct isoforms have been identified. MTORC1 responds to amino acids via interaction with RAGB.[3]

References

  1. "Cloning of a novel family of mammalian GTP-binding proteins (RagA, RagBs, RagB1) with remote similarity to the Ras-related GTPases". J Biol Chem 270 (48): 28982–8. Jan 1996. doi:10.1074/jbc.270.48.28982. PMID 7499430. 
  2. "RagA is a functional homologue of S. cerevisiae Gtr1p involved in the Ran/Gsp1-GTPase pathway". J Cell Sci. 111 ( Pt 1): 11–21. Feb 1998. doi:10.1242/jcs.111.1.11. PMID 9394008. 
  3. 3.0 3.1 "Entrez Gene: RRAGB Ras-related GTP binding B". https://www.ncbi.nlm.nih.gov/sites/entrez?Db=gene&Cmd=ShowDetailView&TermToSearch=10325. 

Further reading