2HT6 image
Deposition Date 2006-07-25
Release Date 2006-10-31
Last Version Date 2024-02-14
Entry Detail
PDB ID:
2HT6
Title:
Crystal structure of Human Gem G-domain bound to GDP
Biological Source:
Source Organism:
Homo sapiens (Taxon ID: 9606)
Host Organism:
Method Details:
Experimental Method:
Resolution:
2.40 Å
R-Value Free:
0.28
R-Value Work:
0.22
R-Value Observed:
0.22
Space Group:
P 21 21 21
Macromolecular Entities
Polymer Type:polypeptide(L)
Molecule:GTP-binding protein GEM
Gene (Uniprot):GEM
Chain IDs:A, B
Chain Length:174
Number of Molecules:2
Biological Source:Homo sapiens
Primary Citation
Structure-function studies of the G-domain from human gem, a novel small G-protein.
Febs Lett. 580 5959 5964 (2006)
PMID: 17052716 DOI: 10.1016/j.febslet.2006.09.067

Abstact

Gem, a member of the Rad,Gem/Kir subfamily of small G-proteins, has unique sequence features. We report here the crystallographic structure determination of the Gem G-domain in complex with nucleotide to 2.4 A resolution. Although the basic Ras protein fold is maintained, the Gem switch regions emphatically differ from the Ras paradigm. Our ensuing biochemical characterization indicates that Gem G-domain markedly prefers GDP over GTP. Two known functions of Gem are distinctly affected by spatially separated clusters of mutations.

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