3efp
Crystal structure of the Escherichia coli twin arginine leader peptide binding protein DmsD in a monomeric form
Structural highlights
FunctionDMSD_ECOLI Required for biogenesis/assembly of DMSO reductase, but not for the interaction of the DmsA signal peptide with the Tat system. May be part of a chaperone cascade complex that facilitates a folding-maturation pathway for the substrate protein.[1] [2] [3] [4] 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 redox enzyme maturation proteins play an essential role in the proofreading and membrane targeting of protein substrates to the twin-arginine translocase. Functionally, the most thoroughly characterized redox enzyme maturation protein to date is Escherichia coli DmsD (EcDmsD). Herein, we present the X-ray crystal structure of the monomeric form of the EcDmsD refined to 2.0 A resolution, with clear electron density present for each of its 204 amino acid residues. The structural data presented here complement the biochemical data previously generated regarding the function of these twin-arginine translocase leader peptide binding chaperone proteins. Docking and molecular dynamics simulation experiments were used to provide a proposed model for how this chaperone is able to recognize the leader peptide of its substrate DmsA. The interactions observed in the model are in agreement with previous biochemical data and suggest intimate interactions between the conserved twin-arginine motif of the leader peptide of E. coli DmsA and the most conserved regions on the surface of EcDmsD. Structural analysis of a monomeric form of the twin-arginine leader peptide binding chaperone Escherichia coli DmsD.,Stevens CM, Winstone TM, Turner RJ, Paetzel M J Mol Biol. 2009 May 29;389(1):124-33. Epub 2009 Apr 8. PMID:19361518[5] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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