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Title: Crystal structures of wild‐type Trichoderma reesei Cel7A catalytic domain in open and closed states

Journal Article · · FEBS Letters
 [1];  [1]
  1. Molecular and Structural Biochemistry Department North Carolina State University Raleigh NC USA, Neutron Sciences Directorate Oak Ridge National Laboratory TN USA
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Trichoderma reesei Cel7A efficiently hydrolyses cellulose. We report here the crystallographic structures of the wild‐type Tr Cel7A catalytic domain (CD) in an open state and, for the first time, in a closed state. Molecular dynamics (MD) simulations indicate that the loops along the CD tunnel move in concerted motions. Together, the crystallographic and MD data suggest that the CD cycles between the tense and relaxed forms that are characteristic of work producing enzymes. Analysis of the interactions formed by R251 provides a structural rationale for the concurrent decrease in product inhibition and catalytic efficiency measured for product‐binding site mutants.

Sponsoring Organization:
USDOE
Grant/Contract Number:
DE‐AC05‐00OR22725
OSTI ID:
1400588
Journal Information:
FEBS Letters, Journal Name: FEBS Letters Vol. 590 Journal Issue: 23; ISSN 0014-5793
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Netherlands
Language:
English
Citation Metrics:
Cited by: 9 works
Citation information provided by
Web of Science

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