3ci0
From Proteopedia
The Crystal Structure of the GspK-GspI-GspJ complex from enterotoxigenic Escherichia coli Type 2 Secretion System
Overview
Gram-negative bacteria translocate various proteins including virulence factors across their outer membrane via type 2 secretion systems (T2SSs). T2SSs are thought to contain a pseudopilus, a subcomplex formed by one major and several minor pseudopilins. We report the crystal structure of the complex formed by three minor pseudopilins from enterotoxigenic Escherichia coli. The GspK-GspI-GspJ complex has quasihelical characteristics and an architecture consistent with a localization at the pseudopilus tip. The alpha-domain of GspK has a previously unobserved fold with an unexpected dinuclear metal binding site. The area surrounding its disulfide bridge is conserved and might interact with other T2SS components or with secreted proteins.
About this Structure
3CI0 is a Protein complex structure of sequences from Escherichia coli. Full crystallographic information is available from OCA.
Reference
Structure of the GspK-GspI-GspJ complex from the enterotoxigenic Escherichia coli type 2 secretion system., Korotkov KV, Hol WG, Nat Struct Mol Biol. 2008 May;15(5):462-8. Epub 2008 Apr 27. PMID:18438417 Page seeded by OCA on Thu May 22 22:37:22 2008
