1gg2: Difference between revisions
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|RESOURCES=<span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1gg2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1gg2 OCA], [http://www.ebi.ac.uk/pdbsum/1gg2 PDBsum], [http://www.rcsb.org/pdb/explore.do?structureId=1gg2 RCSB]</span> | |||
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[[Category: Sprang, S R.]] | [[Category: Sprang, S R.]] | ||
[[Category: Wall, M A.]] | [[Category: Wall, M A.]] | ||
[[Category: complex (gtp-binding/transducer)]] | [[Category: complex (gtp-binding/transducer)]] | ||
[[Category: g protein]] | [[Category: g protein]] | ||
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[[Category: wd40]] | [[Category: wd40]] | ||
''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Sun Mar 30 20:43:23 2008'' | ||
Revision as of 20:43, 30 March 2008
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| , resolution 2.4Å | |||||||
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| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
G PROTEIN HETEROTRIMER MUTANT GI_ALPHA_1(G203A) BETA_1 GAMMA_2 WITH GDP BOUND
OverviewOverview
The crystallographic structure of the G protein heterotrimer Gi alpha 1(GDP)beta 1 gamma 2 (at 2.3 A) reveals two nonoverlapping regions of contact between alpha and beta, an extended interface between beta and nearly all of gamma, and limited interaction of alpha with gamma. The major alpha/beta interface covers switch II of alpha, and GTP-induced rearrangement of switch II causes subunit dissociation during signaling. Alterations in GDP binding in the heterotrimer (compared with alpha-GDP) explain stabilization of the inactive conformation of alpha by beta gamma. Repeated WD motifs in beta form a circularized sevenfold beta propeller. The conserved cores of these motifs are a scaffold for display of their more variable linkers on the exterior face of each propeller blade.
About this StructureAbout this Structure
1GG2 is a Protein complex structure of sequences from Bos taurus and Rattus norvegicus. The following page contains interesting information on the relation of 1GG2 with [G Proteins]. Full crystallographic information is available from OCA.
ReferenceReference
The structure of the G protein heterotrimer Gi alpha 1 beta 1 gamma 2., Wall MA, Coleman DE, Lee E, Iniguez-Lluhi JA, Posner BA, Gilman AG, Sprang SR, Cell. 1995 Dec 15;83(6):1047-58. PMID:8521505
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