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[[Image:1gg2.gif|left|200px]]
[[Image:1gg2.png|left|200px]]


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==Overview==
{{ABSTRACT_8521505}}
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 Structure==
==About this Structure==
1GG2 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus] and [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. The following page contains interesting information on the relation of 1GG2 with [[http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/pdb58_1.html G Proteins]]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GG2 OCA].  
1GG2 is a [[Protein complex]] structure of sequences from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus] and [http://en.wikipedia.org/wiki/Rattus_norvegicus Rattus norvegicus]. The following page contains interesting information on the relation of 1GG2 with [[http://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/pdb58_1.html G Proteins]]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1GG2 OCA].  
==Reference==
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:[http://www.ncbi.nlm.nih.gov/pubmed/8521505 8521505]
[[Category: Bos taurus]]
[[Category: Bos taurus]]
[[Category: G Proteins]]
[[Category: G Proteins]]
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[[Category: Signal transduction protein]]
[[Category: Signal transduction protein]]
[[Category: Wd40]]
[[Category: Wd40]]
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