5TC9

Wild type TrCel7A catalytic domain in a closed state

• PDB DOI: https://doi.org/10.2210/pdb5TC9/pdb

• Classification: HYDROLASE
• Organism(s): Trichoderma reesei QM6a
• Mutation(s): No 


• Deposited: 2016-09-14 Released: 2017-01-04 
• Deposition Author(s): Bodenheimer, A.M., Meilleur, F.
• Funding Organization(s): National Science Foundation (NSF, United States)

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.195 
• R-Value Work: 0.163 
• R-Value Observed: 0.165 

Literature

Crystal structures of wild-type Trichoderma reesei Cel7A catalytic domain in open and closed states.

Bodenheimer, A.M., Meilleur, F.

(2016) FEBS Lett 590: 4429-4438

• PubMed: 27943301 
• DOI: https://doi.org/10.1002/1873-3468.12464
• Primary Citation of Related Structures:  
  5TC9


• PubMed Abstract: 
  

  Trichoderma reesei Cel7A efficiently hydrolyses cellulose. We report here the crystallographic structures of the wild-type TrCel7A 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.

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Organizational Affiliation: 

Molecular and Structural Biochemistry Department, North Carolina State University, Raleigh, NC, USA.

Biological Assembly 1  

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 46.75 kDa 
• Atom Count: 3,759 
• Modelled Residue Count: 432 
• Deposited Residue Count: 432 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Glucanase	A	432	Trichoderma reesei QM6a	Mutation(s): 0  EC: 3.2.1
UniProt
Find proteins for G0RVK1 (Hypocrea jecorina (strain QM6a)) Explore G0RVK1  Go to UniProtKB:  G0RVK1

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	B [auth A], C [auth A], D [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
GD3	E [auth A]	GADOLINIUM ION Gd RJOJUSXNYCILHH-UHFFFAOYSA-N
NO3	F [auth A]	NITRATE ION N O3 NHNBFGGVMKEFGY-UHFFFAOYSA-N

Modified Residues  1 Unique
ID	Chains	Type	Formula	2D Diagram	Parent
PCA	A	L-PEPTIDE LINKING	C5 H7 N O3		GLN

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.60 Å
• R-Value Free: 0.195 
• R-Value Work: 0.163 
• R-Value Observed: 0.165 
• Space Group: C 1 2 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 152.45	α = 90
b = 44.83	β = 101.11
c = 57.52	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
XDS	data reduction
Aimless	data scaling
PHASER	phasing

Structure Validation

Entry History & Funding Information

Deposition Data

• Released Date: 2017-01-04 
Deposition Author(s): Bodenheimer, A.M., Meilleur, F.

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Funding Organization	Location	Grant Number
National Science Foundation (NSF, United States)	United States	1069091

Revision History  

• Version 1.0: 2017-01-04
  Type: Initial release
  
• Version 1.1: 2017-09-20
  Changes: Author supporting evidence
• Version 2.0: 2019-11-27
  Changes: Author supporting evidence, Derived calculations, Polymer sequence
• Version 2.1: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Data collection, Derived calculations, Structure summary
• Version 2.2: 2023-10-04
  Changes: Data collection, Database references, Refinement description, Structure summary