Journal
CHEMISTRY & BIOLOGY
Volume 14, Issue 1, Pages 31-40Publisher
CELL PRESS
DOI: 10.1016/j.chembiol.2006.11.005
Keywords
-
Categories
Funding
- NATIONAL INSTITUTE OF GENERAL MEDICAL SCIENCES [R37GM020011, R01GM020011] Funding Source: NIH RePORTER
- NIGMS NIH HHS [GM20011] Funding Source: Medline
Ask authors/readers for more resources
Syringomycin, a lipopeptidolactone assembled from nine amino acid monomers by four enzymes, SyrB1, SyrB2, SyrC, and SyrE, is a cyclic nonribosomal peptide made by plant-associated Pseudomonas spp. This assembly is unusual because the terminal residue, 4-chlorothreonine, has been proposed to be added in trans since the ninth module of the megasynthetase SyrE lacks an adenylation domain required for Thr/Cl-Thr activation. SyrC is now identified as a Thr/Cl-Thr aminoacyltransferase, shuttling the Thr/Cl-Thr moiety between the pantetheinyl arms of the thiolation domain of SyrB1 and the thiolation domain in module nine of SyrE. SyrC uses Cys224 as a catalytic nucleophile to generate a Thr/Cl-Thr-S-enzyme intermediate during transfer. SyrC joins a growing family of such aminoacyl-shuttling enzymes that also use covalent catalysis to move aminoacyl groups from carrier proteins during coumermycin and coronamic acid biosynthesis.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available