2fg5

Structural highlights

Function

[RAB31_HUMAN] The small GTPases Rab are key regulators of intracellular membrane trafficking, from the formation of transport vesicles to their fusion with membranes. Rabs cycle between an inactive GDP-bound form and an active GTP-bound form that is able to recruit to membranes different set of downstream effectors directly responsible for vesicle formation, movement, tethering and fusion. Required for the integrity and for normal function of the Golgi apparatus and the trans-Golgi network. Plays a role in insulin-stimulated translocation of GLUT4 to the cell membrane. Plays a role in M6PR transport from the trans-Golgi network to endosomes. Plays a role in the internalization of EGFR from the cell membrane into endosomes. Plays a role in the maturation of phagosomes that engulf pathogens, such as S.aureus and M.tuberculosis.^{[1] [2] [3] [4] [5]}

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

• Ras-related protein Rab 3D structures

References

1. ↑ Ng EL, Wang Y, Tang BL. Rab22B's role in trans-Golgi network membrane dynamics. Biochem Biophys Res Commun. 2007 Sep 28;361(3):751-7. Epub 2007 Jul 30. PMID:17678623 doi:http://dx.doi.org/10.1016/j.bbrc.2007.07.076
2. ↑ Lodhi IJ, Chiang SH, Chang L, Vollenweider D, Watson RT, Inoue M, Pessin JE, Saltiel AR. Gapex-5, a Rab31 guanine nucleotide exchange factor that regulates Glut4 trafficking in adipocytes. Cell Metab. 2007 Jan;5(1):59-72. PMID:17189207 doi:http://dx.doi.org/10.1016/j.cmet.2006.12.006
3. ↑ Ng EL, Ng JJ, Liang F, Tang BL. Rab22B is expressed in the CNS astroglia lineage and plays a role in epidermal growth factor receptor trafficking in A431 cells. J Cell Physiol. 2009 Dec;221(3):716-28. doi: 10.1002/jcp.21911. PMID:19725050 doi:http://dx.doi.org/10.1002/jcp.21911
4. ↑ Kajiho H, Sakurai K, Minoda T, Yoshikawa M, Nakagawa S, Fukushima S, Kontani K, Katada T. Characterization of RIN3 as a guanine nucleotide exchange factor for the Rab5 subfamily GTPase Rab31. J Biol Chem. 2011 Jul 8;286(27):24364-73. doi: 10.1074/jbc.M110.172445. Epub 2011, May 17. PMID:21586568 doi:10.1074/jbc.M110.172445
5. ↑ Seto S, Tsujimura K, Koide Y. Rab GTPases regulating phagosome maturation are differentially recruited to mycobacterial phagosomes. Traffic. 2011 Apr;12(4):407-20. doi: 10.1111/j.1600-0854.2011.01165.x. Epub 2011 , Feb 21. PMID:21255211 doi:10.1111/j.1600-0854.2011.01165.x