1QK0

CEL6A WITH A NON-HYDROLYSABLE CELLOTETRAOSE

PDB DOI: https://doi.org/10.2210/pdb1QK0/pdb

Classification: HYDROLASE
Organism(s): Trichoderma reesei
Expression System: Trichoderma reesei
Mutation(s): No

Deposited: 1999-07-08 Released: 1999-09-18
Deposition Author(s): Zou, J.-Y., Jones, T.A.

Experimental Data Snapshot

Method: X-RAY DIFFRACTION
Resolution: 2.10 Å
R-Value Free: 0.221
R-Value Work: 0.181
R-Value Observed: 0.181

wwPDB Validation 3D Report Full Report

Ligand Structure Quality Assessment

This is version 2.0 of the entry. See complete history.

Macromolecule Content

Total Structure Weight: 82.57 kDa
Atom Count: 6,276
Modelled Residue Count: 726
Deposited Residue Count: 726
Unique protein chains: 1

Macromolecules

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(by identity cutoff) | 3D Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
CELLOBIOHYDROLASE CEL6A (FORMERLY CALLED CBH II)	A, B	363	Trichoderma reesei	Mutation(s): 0 EC: 3.2.1.91
UniProt
Find proteins for P07987 (Hypocrea jecorina) Explore P07987 Go to UniProtKB: P07987
Entity Groups
Sequence Clusters	30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt Group	P07987
Sequence Annotations Expand
Reference Sequence

Oligosaccharides

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Entity ID: 2
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
beta-D-glucopyranose-(1-4)-beta-D-xylopyranose	C	2		N/A	Interactions Focus chain C Interactions & Density Focus chain C
Glycosylation Resources
GlyTouCan: G77350QW GlyCosmos: G77350QW GlyGen: G77350QW

Entity ID: 3
Molecule	Chains	Length	2D Diagram	Glycosylation	3D Interactions
alpha-D-glucopyranose-(1-4)-alpha-D-xylopyranose	D	2		N/A	Interactions Focus chain D Interactions & Density Focus chain D
Glycosylation Resources
GlyTouCan: G94034AJ GlyCosmos: G94034AJ GlyGen: G94034AJ

Small Molecules

Ligands 5 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
IOB (Subject of Investigation/LOI) Query on IOB Download Ideal Coordinates CCD File SDF format, chain AA [auth B] SDF format, chain O [auth A] MOL2 format, chain AA [auth B] MOL2 format, chain O [auth A]	AA [auth B], O [auth A]	3-IODO-BENZYL ALCOHOL C₇ H₇ I O QGCCNWSXJHGUNL-UHFFFAOYSA-N		Interactions Focus chain AA [auth B] Focus chain O [auth A] Interactions & Density Focus chain AA [auth B] Focus chain O [auth A]
NAG Query on NAG Download Ideal Coordinates CCD File SDF format, chain E [auth A] SDF format, chain F [auth A] SDF format, chain P [auth B] SDF format, chain Q [auth B] MOL2 format, chain E [auth A] MOL2 format, chain F [auth A] MOL2 format, chain P [auth B] MOL2 format, chain Q [auth B]	E [auth A], F [auth A], P [auth B], Q [auth B]	2-acetamido-2-deoxy-beta-D-glucopyranose C₈ H₁₅ N O₆ OVRNDRQMDRJTHS-FMDGEEDCSA-N		Interactions Focus chain E [auth A] Focus chain F [auth A] Focus chain P [auth B] Focus chain Q [auth B] Interactions & Density Focus chain E [auth A] Focus chain F [auth A] Focus chain P [auth B] Focus chain Q [auth B]
MAN Query on MAN Download Ideal Coordinates CCD File SDF format, chain G [auth A] SDF format, chain H [auth A] SDF format, chain I [auth A] SDF format, chain J [auth A] SDF format, chain K [auth A] SDF format, chain L [auth A] SDF format, chain M [auth A] SDF format, chain R [auth B] SDF format, chain S [auth B] SDF format, chain T [auth B] SDF format, chain U [auth B] SDF format, chain V [auth B] SDF format, chain W [auth B] SDF format, chain X [auth B] MOL2 format, chain G [auth A] MOL2 format, chain H [auth A] MOL2 format, chain I [auth A] MOL2 format, chain J [auth A] MOL2 format, chain K [auth A] MOL2 format, chain L [auth A] MOL2 format, chain M [auth A] MOL2 format, chain R [auth B] MOL2 format, chain S [auth B] MOL2 format, chain T [auth B] MOL2 format, chain U [auth B] MOL2 format, chain V [auth B] MOL2 format, chain W [auth B] MOL2 format, chain X [auth B]	G [auth A] H [auth A] I [auth A] J [auth A] K [auth A] G [auth A], H [auth A], I [auth A], J [auth A], K [auth A], L [auth A], M [auth A], R [auth B], S [auth B], T [auth B], U [auth B], V [auth B], W [auth B], X [auth B]	alpha-D-mannopyranose C₆ H₁₂ O₆ WQZGKKKJIJFFOK-PQMKYFCFSA-N		Interactions Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth A] Focus chain L [auth A] Focus chain M [auth A] Focus chain R [auth B] Focus chain S [auth B] Focus chain T [auth B] Focus chain U [auth B] Focus chain V [auth B] Focus chain W [auth B] Focus chain X [auth B] Interactions & Density Focus chain G [auth A] Focus chain H [auth A] Focus chain I [auth A] Focus chain J [auth A] Focus chain K [auth A] Focus chain L [auth A] Focus chain M [auth A] Focus chain R [auth B] Focus chain S [auth B] Focus chain T [auth B] Focus chain U [auth B] Focus chain V [auth B] Focus chain W [auth B] Focus chain X [auth B]
IOD Query on IOD Download Ideal Coordinates CCD File SDF format, chain Y [auth B] MOL2 format, chain Y [auth B]	Y [auth B]	IODIDE ION I XMBWDFGMSWQBCA-UHFFFAOYSA-M		Interactions Focus chain Y [auth B] Interactions & Density Focus chain Y [auth B]
CO Query on CO Download Ideal Coordinates CCD File SDF format, chain N [auth A] SDF format, chain Z [auth B] MOL2 format, chain N [auth A] MOL2 format, chain Z [auth B]	N [auth A], Z [auth B]	COBALT (II) ION Co XLJKHNWPARRRJB-UHFFFAOYSA-N		Interactions Focus chain N [auth A] Focus chain Z [auth B] Interactions & Density Focus chain N [auth A] Focus chain Z [auth B]

Experimental Data & Validation

Experimental Data

Method: X-RAY DIFFRACTION
Resolution: 2.10 Å
R-Value Free: 0.221
R-Value Work: 0.181
R-Value Observed: 0.181
Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 48.5	α = 90
b = 74.69	β = 103.19
c = 91.14	γ = 90

Software Package:

Software Name	Purpose
CNS	refinement
DENZO	data reduction
SCALEPACK	data scaling
CNS	phasing

Structure Validation

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Ligand Structure Quality Assessment

Entry History

Deposition Data

Released Date: 1999-09-18

Deposition Author(s):

Zou, J.-Y.

Jones, T.A.

Revision History (Full details and data files)

Version 1.0: 1999-09-18
Type: Initial release
Version 1.1: 2016-01-27
Changes: Data collection, Database references, Derived calculations, Non-polymer description, Other, Refinement description, Version format compliance
Version 1.2: 2019-10-23
Changes: Author supporting evidence, Data collection, Derived calculations, Experimental preparation, Other, Structure summary
Version 2.0: 2020-07-29
Type: Remediation
Reason: Carbohydrate remediation
Changes: Advisory, Atomic model, Data collection, Derived calculations, Structure summary