1OCN

Mutant D416A of the CELLOBIOHYDROLASE CEL6A FROM HUMICOLA INSOLENS in complex with a cellobio-derived isofagomine at 1.3 angstrom resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.31 Å
  • R-Value Free: 0.162 
  • R-Value Work: 0.130 
  • R-Value Observed: 0.132 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Distortion of a Cellobio-Derived Isofagomine Highlights the Potential Conformational Itinerary of Inverting Beta-Glucosidases

Varrot, A.Macdonald, J.Stick, R.V.Pell, G.Gilbert, H.J.Davies, G.J.

(2003) Chem Commun (Camb) 21: 946

  • DOI: 10.1039/b301592k
  • Primary Citation of Related Structures:  
    1OCN

  • PubMed Abstract: 
  • A cellobio-derived isofagomine glycosidase inhibitor (Ki approximately 400 nM) displays an unusual distorted 2,5B (boat) conformation upon binding to cellobiohydrolase Cel6A from Humicola insolens, highlighting the different conformational itineraries used by various glycosidases, with consequences for the design of therapeutic agents ...

    A cellobio-derived isofagomine glycosidase inhibitor (Ki approximately 400 nM) displays an unusual distorted 2,5B (boat) conformation upon binding to cellobiohydrolase Cel6A from Humicola insolens, highlighting the different conformational itineraries used by various glycosidases, with consequences for the design of therapeutic agents.


    Organizational Affiliation

    Structural Biology Laboratory, Department of Chemistry, The University of York, Heslington, York, UK Y010 5YW.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
CELLOBIOHYDROLASE IIA362Humicola insolensMutation(s): 0 
Gene Names: cel6Aavi2
EC: 3.2.1.91
UniProt
Find proteins for Q9C1S9 (Humicola insolens)
Explore Q9C1S9 
Go to UniProtKB:  Q9C1S9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9C1S9
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 4 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NAG
Query on NAG

Download Ideal Coordinates CCD File 
B [auth A]2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
BGC
Query on BGC

Download Ideal Coordinates CCD File 
D [auth A],
F [auth A]
beta-D-glucopyranose
C6 H12 O6
WQZGKKKJIJFFOK-VFUOTHLCSA-N
 Ligand Interaction
IFM
Query on IFM

Download Ideal Coordinates CCD File 
C [auth A],
E [auth A]
5-HYDROXYMETHYL-3,4-DIHYDROXYPIPERIDINE
C6 H13 N O3
QPYJXFZUIJOGNX-HSUXUTPPSA-N
 Ligand Interaction
CA
Query on CA

Download Ideal Coordinates CCD File 
G [auth A],
H [auth A]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.31 Å
  • R-Value Free: 0.162 
  • R-Value Work: 0.130 
  • R-Value Observed: 0.132 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 49.357α = 90
b = 69.842β = 113.52
c = 51.95γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
AMoREphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2003-05-22
    Type: Initial release
  • Version 1.1: 2015-07-15
    Changes: Derived calculations, Non-polymer description, Other, Structure summary, Version format compliance
  • Version 1.2: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Data collection, Derived calculations, Other, Structure summary