4V20

The 3-D structure of the cellobiohydrolase, Cel7A, from Aspergillus fumigatus, disaccharide complex

• PDB DOI: https://doi.org/10.2210/pdb4V20/pdb

• Classification: HYDROLASE
• Organism(s): Aspergillus fumigatus
• Expression System: Aspergillus oryzae
• Mutation(s): No 


• Deposited: 2014-10-05 Released: 2015-01-14 
• Deposition Author(s): Moroz, O.V., Maranta, M., Shaghasi, T., Harris, P.V., Wilson, K.S., Davies, G.J.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 0.158 
• R-Value Work: 0.132 
• R-Value Observed: 0.133 

Biological Assembly 1  

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

Biological assembly 1 generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 47.95 kDa 
• Atom Count: 4,410 
• Modelled Residue Count: 440 
• Deposited Residue Count: 440 
• Unique protein chains: 1

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CELLOBIOHYDROLASE	A	440	Aspergillus fumigatus	Mutation(s): 0  EC: 3.2.1.91
UniProt
Find proteins for Q4WM08 (Aspergillus fumigatus (strain ATCC MYA-4609 / CBS 101355 / FGSC A1100 / Af293)) Explore Q4WM08  Go to UniProtKB:  Q4WM08

Oligosaccharides

Help

Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-glucopyranose-(1-4)-2-deoxy-2-fluoro-beta-D-glucopyranose	B	2		N/A
Glycosylation Resources
GlyTouCan:  G28308WE GlyCosmos:  G28308WE

Small Molecules

Ligands 3 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
NAG	C [auth A]	2-acetamido-2-deoxy-beta-D-glucopyranose C8 H15 N O6 OVRNDRQMDRJTHS-FMDGEEDCSA-N
ZN	D [auth A], E [auth A]	ZINC ION Zn PTFCDOFLOPIGGS-UHFFFAOYSA-N
ACT	F [auth A], G [auth A]	ACETATE ION C2 H3 O2 QTBSBXVTEAMEQO-UHFFFAOYSA-M

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

Biologically Interesting Molecules (External Reference) 1 Unique

Entity ID: 2
ID	Chains	Name	Type/Class	2D Diagram	3D Interactions
PRD_900082	B	2-deoxy-2-fluoro-beta-D-cellobiose	Oligosaccharide / Substrate analog

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.50 Å
• R-Value Free: 0.158 
• R-Value Work: 0.132 
• R-Value Observed: 0.133 
• Space Group: P 2₁ 2₁ 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 79.56	α = 90
b = 130.78	β = 90
c = 46.12	γ = 90

Software Package:

Software Name	Purpose
REFMAC	refinement
MOLREP	phasing

Structure Validation

Entry History 

Deposition Data

• Released Date: 2015-01-14 
Deposition Author(s): Moroz, O.V., Maranta, M., Shaghasi, T., Harris, P.V., Wilson, K.S., Davies, G.J.

Revision History  

• Version 1.0: 2015-01-14
  Type: Initial release
  
• Version 1.1: 2015-02-04
  Changes: Database references
• Version 1.2: 2015-02-18
  Changes: Data collection
• Version 2.0: 2020-03-11
  Changes: Data collection, Derived calculations, Other, Polymer sequence
• Version 3.0: 2020-07-29
  Type: Remediation
  Reason: Carbohydrate remediation
  Changes: Atomic model, Data collection, Derived calculations, Non-polymer description, Structure summary
• Version 3.1: 2024-01-10
  Changes: Data collection, Database references, Refinement description, Structure summary