2hjg
From Proteopedia
The crystal structure of the B. subtilis YphC GTPase in complex with GDP
Structural highlights
Function[DER_BACSU] GTPase that plays an essential role in the late steps of ribosome biogenesis.[1] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe structure of a Bacillus subtilis YphC/GDP complex shows that it contains two GTPase domains that pack against a central domain whose fold resembles that of an RNA binding KH-domain. Comparisons of this structure to that of a homologue in Thermotoga maritima reveals a dramatic rearrangement in the position of the N-terminal GTPase domain with a shift of up to 60 A and the formation of a totally different interface to the central domain. This rearrangement appears to be triggered by conformational changes of the switch II region in this domain in response to nucleotide binding. Modeling studies suggest that this motion represents transitions between the "on" and "off" states of the GTPase, the effect of which is to alternately expose and bury a positively charged face of the central domain that we suggest is involved in RNA recognition as part of the possible role of this enzyme in ribosome binding. The essential GTPase YphC displays a major domain rearrangement associated with nucleotide binding.,Muench SP, Xu L, Sedelnikova SE, Rice DW Proc Natl Acad Sci U S A. 2006 Aug 15;103(33):12359-64. Epub 2006 Aug 7. PMID:16894162[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
| ||||||||||||||||||||||||
