2UWJ:
reference: Structure of the heterotrimeric complex that regulates type III secretion needle formation., Quinaud M, Ple S, Job V, Contreras-Martel C, Simorre JP, Attree I, Dessen A, Proc Natl Acad Sci U S A. 2007 May 8;104(19):7803-8. Epub 2007 Apr 30. PMID: 17470796

This OCA Structure page
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