Biology:RAB7B

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

Ras-related protein Rab-7b is a protein that in humans is encoded by the RAB7B gene.[1]

Function

Rab7 is a small GTPase that plays a role in the transport and degradation of proteins in endosomes and lysosomes in mammalian cells. Rab7b, is localized to lysosome-associated compartments and is selectively expressed in monocytic cells.[2] By promoting the degradation of toll-like receptor 4, RAB7B can negatively regulate the inflammatory activation of macrophages.[2]

References

  1. "Rab7b, a novel lysosome-associated small GTPase, is involved in monocytic differentiation of human acute promyelocytic leukemia cells". Biochem. Biophys. Res. Commun. 318 (3): 792–9. June 2004. doi:10.1016/j.bbrc.2004.04.115. PMID 15144907. 
  2. 2.0 2.1 "Lysosome-associated small Rab GTPase Rab7b negatively regulates TLR4 signaling in macrophages by promoting lysosomal degradation of TLR4". Blood 110 (3): 962–71. August 2007. doi:10.1182/blood-2007-01-066027. PMID 17395780. 

Further reading