Structural basis for phosphopantetheinyl carrier domain interactions in the terminal module of nonribosomal peptide synthetases.

Structural basis for phosphopantetheinyl carrier domain interactions in the terminal module of nonribosomal peptide synthetases.
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DOI:
10.1016/j.chembiol.2011.09.018
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发表时间:
2011-11-23
影响因子:
--
通讯作者:
Bruner SD
Bruner SD
中科院分区:
生物1区
文献类型:
--
作者:
Liu Y;Zheng T;Bruner SD

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Phosphopantetheine-modified carrier domains play a central role in the template-directed, biosynthesis of several classes of primary and secondary metabolites. Fatty acids, polyketides and nonribosomal peptides are constructed on multidomain enzyme assemblies using phosphopantetheinyl thioester-linked carrier domains to traffic and activate building blocks. The carrier domain is a dynamic component of the process, shuttling pathway intermediates to sequential enzyme active sites. Here we report an approach to structurally fix carrier domain/enzyme constructs suitable for X-ray crystallographic analysis. The structure of a two-domain construct of E. coli EntF was determined with a conjugated phosphopantetheinyl-based inhibitor. The didomain structure is locked in an active orientation relevant to the chemistry of nonribosomal peptide biosynthesis. This structure provides details into the interaction of phosphopantetheine arm with the carrier domain and the active site of the thioesterase domain.
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