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Title: Interdomain and Intermodule Organization in Epimerization Domain Containing Nonribosomal Peptide Synthetases

Journal Article · · ACS Chemical Biology

Nonribosomal peptide synthetases are large, complex multidomain enzymes responsible for the biosynthesis of a wide range of peptidic natural products. Inherent to synthetase chemistry is the thioester templated mechanism that relies on protein/protein interactions and interdomain dynamics. Several questions related to structure and mechanism remain to be addressed, including the incorporation of accessory domains and intermodule interactions. The inclusion of nonproteinogenic d-amino acids into peptide frameworks is a common and important modification for bioactive nonribosomal peptides. Epimerization domains, embedded in nonribosomal peptide synthetases assembly lines, catalyze the l- to d-amino acid conversion. Here we report the structure of the epimerization domain/peptidyl carrier protein didomain construct from the first module of the cyclic peptide antibiotic gramicidin synthetase. Both holo (phosphopantethiene post-translationally modified) and apo structures were determined, each representing catalytically relevant conformations of the two domains. The structures provide insight into domain–domain recognition, substrate delivery during the assembly line process, in addition to the structural organization of homologous condensation domains, canonical players in all synthetase modules.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Science Foundation (NSF); USDOE
OSTI ID:
1328050
Journal Information:
ACS Chemical Biology, Vol. 11, Issue 8; ISSN 1554-8929
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 45 works
Citation information provided by
Web of Science

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Cited By (17)

Structure of a bound peptide phosphonate reveals the mechanism of nocardicin bifunctional thioesterase epimerase-hydrolase half-reactions journal August 2019
Structural and mutational analysis of the nonribosomal peptide synthetase heterocyclization domain provides insight into catalysis journal December 2016
The many faces and important roles of protein–protein interactions during non-ribosomal peptide synthesis journal January 2018
Trapping interactions between catalytic domains and carrier proteins of modular biosynthetic enzymes with chemical probes journal January 2018
Kistamicin biosynthesis reveals the biosynthetic requirements for production of highly crosslinked glycopeptide antibiotics journal June 2019
Mechanistic Probes for the Epimerization Domain of Nonribosomal Peptide Synthetases journal November 2018
Structural basis for chain release from the enacyloxin polyketide synthase journal September 2019
Nonribosomal Peptide Synthesis-Principles and Prospects journal March 2017
Nicht-ribosomale Peptidsynthese - Prinzipien und Perspektiven journal March 2017
Substrate-Induced Conformational Changes of the Tyrocidine Synthetase 1 Adenylation Domain Probed by Intrinsic Trp Fluorescence journal April 2017
Genome Features and Secondary Metabolites Biosynthetic Potential of the Class Ktedonobacteria journal April 2019
Structures of a Nonribosomal Peptide Synthetase Module Bound to MbtH-like Proteins Support a Highly Dynamic Domain Architecture journal September 2016
The modules of trans -acyltransferase assembly lines redefined with a central acyl carrier protein journal March 2018
Structure, properties, and biological functions of nonribosomal lipopeptides from pseudomonads journal January 2020
Structures of a dimodular nonribosomal peptide synthetase reveal conformational flexibility journal November 2019
Structures of a dimodular nonribosomal peptide synthetase reveal conformational flexibility journal August 2020
Crystal structure of the condensation domain from lovastatin polyketide synthase journal March 2019

Figures / Tables (6)