5TTB

Solution structure of apo ArCP from yersiniabactin synthetase

5TTB の概要

• エントリーDOI: 10.2210/pdb5ttb/pdb
• NMR情報: BMRB: 30199
• 分子名称: Siderophore yersiniabactin (1 entity in total)
• 機能のキーワード: apo carrier protein, nonribosomal peptide synthetase, ligase
• 由来する生物種: Yersinia pestis
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 9771.06

構造登録者

Frueh, D.P.,Goodrich, A.C. (登録日: 2016-11-02, 公開日: 2017-05-10, 最終更新日: 2024-05-15)

主引用文献

Goodrich, A.C.,Meyers, D.J.,Frueh, D.P.
Molecular impact of covalent modifications on nonribosomal peptide synthetase carrier protein communication.
J. Biol. Chem., 292:10002-10013, 2017

PubMed Abstract: Nonribosomal peptide synthesis involves the interplay between covalent protein modifications, conformational fluctuations, catalysis, and transient protein-protein interactions. Delineating the mechanisms involved in orchestrating these various processes will deepen our understanding of domain-domain communication in nonribosomal peptide synthetases (NRPSs) and lay the groundwork for the rational reengineering of NRPSs by swapping domains handling different substrates to generate novel natural products. Although many structural and biochemical studies of NRPSs exist, few studies have focused on the energetics and dynamics governing the interactions in these systems. Here, we present detailed binding studies of an adenylation domain and its partner carrier protein in apo-, holo-, and substrate-loaded forms. Results from fluorescence anisotropy, isothermal titration calorimetry, and NMR titrations indicated that covalent modifications to a carrier protein modulate domain communication, suggesting that chemical modifications to carrier proteins during NRPS synthesis may impart directionality to sequential NRPS domain interactions. Comparison of the structure and dynamics of an apo-aryl carrier protein with those of its modified forms revealed structural fluctuations induced by post-translational modifications and mediated by modulations of protein dynamics. The results provide a comprehensive molecular description of a carrier protein throughout its life cycle and demonstrate how a network of dynamic residues can propagate the molecular impact of chemical modifications throughout a protein and influence its affinity toward partner domains.

PubMed: 28455448
DOI: 10.1074/jbc.M116.766220

実験手法

SOLUTION NMR