Structures of a nonribosomal peptide synthetase module bound to MbtH-like proteins support a highly dynamic domain architecture

Bradley R. Miller, Eric J. Drake, Ce Shi, Courtney C. Aldrich, Andrew M. Gulick

Research output: Contribution to journalArticlepeer-review

45 Scopus citations

Abstract

Nonribosomal peptide synthetases (NRPSs) produce a wide variety of peptide natural products. During synthesis, the multidomain NRPSs act as an assembly line, passing the growing product from one module to the next. Each module generally consists ofanintegrated peptidyl carrier protein, an amino acidloading adenylation domain, and a condensation domain that catalyzes peptide bond formation. Some adenylation domains interact with small partner proteins called MbtH-like proteins (MLPs) that enhance solubility or activity. A structure of an MLP bound to an adenylation domain has been previously reported using a truncated adenylation domain, precluding any insight that might be derived from understanding the influence of the MLPonthe intact adenylation domainoron the dynamics of the entire NRPS module. Here, we present the structures of the full-length NRPS EntF bound to the MLPs from Escherichia coli and Pseudomonas aeruginosa. These new structures, along with biochemical and bioinformatics support, further elaborate the residues that define the MLP-adenylation domain interface. Additionally, the structures highlight the dynamic behavior of NRPS modules, including the module core formed by the adenylation and condensation domains as well as the orientation of the mobile thioesterase domain.

Original languageEnglish (US)
Pages (from-to)22559-22571
Number of pages13
JournalJournal of Biological Chemistry
Volume291
Issue number43
DOIs
StatePublished - Oct 21 2016

Bibliographical note

Funding Information:
This work was supported by National Institutes of Health Grant R01 GM116957 (to A. M. G.). The authors declare that they have no conflicts of interest with the contents of this article. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health.

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