Ras superfamily
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| Identifiers | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Symbol | Ras | ||||||||||
| Pfam | PF00071 | ||||||||||
| InterPro | IPR013753 | ||||||||||
| PROSITE | PDOC00017 | ||||||||||
| SCOP2 | 5p21 / SCOPe / SUPFAM | ||||||||||
| OPM protein | 1uad | ||||||||||
| CDD | cd00882 | ||||||||||
| |||||||||||
The Ras superfamily is a protein superfamily of small GTPases, which are all related, to a degree, to the Ras protein subfamily (the key human members of which are KRAS, NRAS, and HRAS).
There are more than a hundred proteins in the Ras superfamily.[1] Based on structure, sequence and function, the Ras superfamily is divided into five main families (Ras, Rho, Ran, Rab and Arf GTPases).[2] The Ras family itself is further divided into 6 subfamilies: Ras, Ral, Rit, Rap, Rheb, Rad and Rit. Miro is a recent contributor to the superfamily. Each subfamily shares the common core G domain, which provides essential GTPase and nucleotide exchange activity.
The surrounding sequence helps determine the functional specificity of the small GTPase, for example the 'Insert Loop', common to the Rho subfamily, specifically contributes to binding to effector proteins such as WASP.
In general, the Ras family is responsible for cell proliferation: Rho for cell morphology, Ran for nuclear transport, and Rab and Arf for vesicle transport.[3]
Subfamilies and members
The following is a list of human proteins belonging to the Ras superfamily:[1]
Unclassified:
See also
References
- ^ a b Wennerberg K, Rossman KL, Der CJ (March 2005). "The Ras superfamily at a glance". J. Cell. Sci. 118 (Pt 5): 843–6. doi:10.1242/jcs.01660. PMID 15731001.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Goitre, L; Trapani, E; Trabalzini, L; Retta, SF (26 December 2013). "The Ras superfamily of small GTPases: the unlocked secrets". 1120: 1–18. doi:10.1007/978-1-62703-791-4_1. PMID 24470015. Retrieved 2 January 2015.
{{cite journal}}: Cite journal requires|journal=(help) - ^ a b c d Munemitsu S, Innis M, Clark R, McCormick F, Ullrich A, Polakis P. (1990). "Molecular cloning and experssion of a G25K cDNA, the human homolog of the yeast cell cycle gene CDC42". Mol Cell Biol. 10 (11): 5977–82. ISSN 0270-7306. PMC 361395. PMID 2122236.
{{cite journal}}: CS1 maint: multiple names: authors list (link)