2fq1
Crystal structure of the two-domain non-ribosomal peptide synthetase EntB containing isochorismate lyase and aryl-carrier protein domainsCrystal structure of the two-domain non-ribosomal peptide synthetase EntB containing isochorismate lyase and aryl-carrier protein domains
Structural highlights
FunctionENTB_ECOLI Required for production of 2,3-DHB. Also serves as an aryl carrier protein and plays a role in enterobactin assembly. 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 PubMedNonribosomal peptide synthetases are modular proteins that operate in an assembly line fashion to bind, modify, and link amino acids. In the E. coli enterobactin NRPS system, the EntE adenylation domain catalyzes the transfer of a molecule of 2,3-dihydroxybenzoic acid to the pantetheine cofactor of EntB. We present here the crystal structure of the EntB protein that contains an N-terminal isochorismate lyase domain that functions in the synthesis of 2,3-dihydroxybenzoate and a C-terminal carrier protein domain. Functional analysis showed that the EntB-EntE interaction was surprisingly tolerant of a number of point mutations on the surface of EntB and EntE. Mutational studies on EntE support our previous hypothesis that members of the adenylate-forming family of enzymes adopt two distinct conformations to catalyze the two-step reactions. Structure of the EntB multidomain nonribosomal peptide synthetase and functional analysis of its interaction with the EntE adenylation domain.,Drake EJ, Nicolai DA, Gulick AM Chem Biol. 2006 Apr;13(4):409-19. PMID:16632253[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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