1G9U

CRYSTAL STRUCTURE OF YOPM-LEUCINE RICH EFFECTOR PROTEIN FROM YERSINIA PESTIS

Summary for 1G9U

• Entry DOI: 10.2210/pdb1g9u/pdb
• Related: 1d0b 1dfj
• Descriptor: OUTER PROTEIN YOPM, ACETATE ION, CALCIUM ION, ... (5 entities in total)
• Functional Keywords: toxin
• Biological source: Yersinia pestis
• Cellular location: Cell outer membrane: P17778
• Total number of polymer chains: 1
• Total formula weight: 53804.92

Authors

Evdokimov, A.G.,Anderson, D.E.,Routzahn, K.M.,Waugh, D.S. (deposition date: 2000-11-28, release date: 2001-10-10, Last modification date: 2024-04-03)

Primary citation

Evdokimov, A.G.,Anderson, D.E.,Routzahn, K.M.,Waugh, D.S.
Unusual molecular architecture of the Yersinia pestis cytotoxin YopM: a leucine-rich repeat protein with the shortest repeating unit.
J.Mol.Biol., 312:807-821, 2001

PubMed Abstract: Many Gram-negative bacterial pathogens employ a contact-dependent (type III) secretion system to deliver effector proteins into the cytosol of animal or plant cells. Collectively, these effectors enable the bacteria to evade the immune response of the infected organism by modulating host-cell functions. YopM, a member of the leucine-rich repeat protein superfamily, is an effector produced by the bubonic plague bacterium, Yersinia pestis, that is essential for virulence. Here, we report crystal structures of YopM at 2.4 and 2.1 A resolution. Among all leucine-rich repeat family members whose atomic coordinates have been reported, the repeating unit of YopM has the least canonical secondary structure. In both crystals, four YopM monomers form a hollow cylinder with an inner diameter of 35 A. The domain that targets YopM for translocation into eukaryotic cells adopts a well-ordered, alpha-helical conformation that packs tightly against the proximal leucine-rich repeat module. A similar alpha-helical domain can be identified in virulence-associated leucine-rich repeat proteins produced by Salmonella typhimurium and Shigella flexneri, and in the conceptual translation products of several open reading frames in Y. pestis.

PubMed: 11575934
DOI: 10.1006/jmbi.2001.4973

Experimental method

X-RAY DIFFRACTION (2.35 Å)