6YP1 | pdb_00006yp1

HiCel7B unliganded


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • R-Value Free: 
    0.135 (Depositor), 0.135 (DCC) 
  • R-Value Work: 
    0.117 (Depositor), 0.117 (DCC) 

Starting Model: experimental
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wwPDB Validation 3D Report Full Report

Validation slider image for 6YP1

Ligand Structure Quality Assessment 


This is version 2.2 of the entry. See complete history

Literature

Glycosylated cyclophellitol-derived activity-based probes and inhibitors for cellulases.

de Boer, C.McGregor, N.G.S.Peterse, E.Schroder, S.P.Florea, B.I.Jiang, J.Reijngoud, J.Ram, A.F.J.van Wezel, G.P.van der Marel, G.A.Codee, J.D.C.Overkleeft, H.S.Davies, G.J.

(2020) RSC Chem Biol 1: 148-155

  • DOI: https://doi.org/10.1039/d0cb00045k
  • Primary Citation Related Structures: 
    6YOZ, 6YP1

  • PubMed Abstract: 

    Cellulases and related β-1,4-glucanases are essential components of lignocellulose-degrading enzyme mixtures. The detection of β-1,4-glucanase activity typically relies on monitoring the breakdown of purified lignocellulose-derived substrates or synthetic chromogenic substrates, limiting the activities which can be detected and complicating the tracing of activity back to specific components within complex enzyme mixtures. As a tool for the rapid detection and identification of β-1,4-glucanases, a series of glycosylated cyclophellitol inhibitors mimicking β-1,4-glucan oligosaccharides have been synthesised. These compounds are highly efficient inhibitors of HiCel7B, a well-known GH7 endo -β-1,4-glucanase. An elaborated activity-based probe facilitated the direct detection and identification of β-1,4-glucanases within a complex fungal secretome without any detectable cross-reactivity with β-d-glucosidases. These probes and inhibitors add valuable new capacity to the growing toolbox of cyclophellitol-derived probes for the activity-based profiling of biomass-degrading enzymes.


  • Organizational Affiliation
    • Leiden Institute of Chemistry, Leiden University Einsteinweg 55 2300 RA Leiden The Netherlands h.s.overkleeft@chem.leidenuniv.nl.

Macromolecule Content 

  • Total Structure Weight: 46.44 kDa 
  • Atom Count: 3,651 
  • Modeled Residue Count: 402 
  • Deposited Residue Count: 402 
  • Unique protein chains: 1

Macromolecules

Find similar proteins by:|  3D Structure
Entity ID: 1
MoleculeChains  Sequence LengthOrganismDetailsImage
Endoglucanase 1A [auth AAA]402Mycothermus thermophilusMutation(s): 0 
Gene Names: CEL7B
EC: 3.2.1.4
UniProt
Find proteins for P56680 (Humicola insolens)
Explore P56680 
Go to UniProtKB:  P56680
Entity Groups
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP56680
Glycosylation
Glycosylation Sites: 2
Sequence Annotations
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Reference Sequence

Small Molecules

Ligands 4 Unique
IDChains Name / Formula / InChI Key2D Diagram3D Interactions
NAG

Query on NAG



Download:Ideal Coordinates CCD File
H [auth AAA],
R [auth AAA]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
SO4

Query on SO4



Download:Ideal Coordinates CCD File
C [auth AAA]
D [auth AAA]
E [auth AAA]
I [auth AAA]
J [auth AAA]
C [auth AAA],
D [auth AAA],
E [auth AAA],
I [auth AAA],
J [auth AAA],
K [auth AAA],
N [auth AAA],
P [auth AAA],
Q [auth AAA]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
GOL

Query on GOL



Download:Ideal Coordinates CCD File
B [auth AAA],
F [auth AAA],
L [auth AAA],
M [auth AAA],
O [auth AAA]
GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N
ACM

Query on ACM



Download:Ideal Coordinates CCD File
G [auth AAA]ACETAMIDE
C2 H5 N O
DLFVBJFMPXGRIB-UHFFFAOYSA-N
Modified Residues  1 Unique
IDChains TypeFormula2D DiagramParent
PCA
Query on PCA
A [auth AAA]L-PEPTIDE LINKINGC5 H7 N O3GLN

Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.20 Å
  • R-Value Free:  0.135 (Depositor), 0.135 (DCC) 
  • R-Value Work:  0.117 (Depositor), 0.117 (DCC) 
Space Group: P 42 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 92.31α = 90
b = 92.31β = 90
c = 100.81γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
xia2data reduction
xia2data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment 


Entry History 

& Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Biotechnology and Biological Sciences Research Council (BBSRC)United KingdomBB/R001162/1

Revision History  (Full details and data files)

  • Version 1.0: 2020-09-16
    Type: Initial release
  • Version 2.0: 2021-10-13
    Changes: Advisory, Atomic model, Data collection, Database references, Derived calculations, Structure summary
  • Version 2.1: 2024-01-24
    Changes: Data collection, Derived calculations, Refinement description
  • Version 2.2: 2024-11-06
    Changes: Structure summary