1QK0	Hydrolase	date	Jul 08, 1999
title	Cel6a With A Non-Hydrolysable Cellotetraose
authors	J.Y.Zou, T.A.Jones
compound		source
Molecule: Cellobiohydrolase Cel6a (Formerly Called Cbh II) Chain: A, B Fragment: Catalytic Domain, Residues 85-447 Synonym: Cel6a Ec: 3.2.1.91 Engineered: Yes		Organism_scientific: Trichoderma Reesei Organism_taxid: 51453 Expression_system: Trichoderma Reesei Expression_system_taxid: 51453
symmetry	Space Group: P 1 21 1	R_factor 0.181 R_Free 0.221
crystal cell	length a length b length c angle alpha angle beta angle gamma 48.500 74.690 91.140 90.00 103.19 90.00
method	X-Ray Diffraction	resolution	2.10 Å
ligand	BGC, CO, GLC, IOB, IOD, MAN, NAG, XYP, XYS	enzyme	Hydrolase E.C.3.2.1.91 BRENDA
related structures	by homologous chain: 1CB2, 1HGW
Gene Ontology	Chain Function Process Component A, B
Primary reference	Crystallographic evidence for substrate ring distortion and protein conformational changes during catalysis in cellobiohydrolase Ce16A from trichoderma reesei., Zou J, Kleywegt GJ, Stahlberg J, Driguez H, Nerinckx W, Claeyssens M, Koivula A, Teeri TT, Jones TA, Structure. 1999 Sep 15;7(9):1035-45. PMID:10508787

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (129 Kb) [Save to disk] Biological Unit Coordinates (1qk0.pdb1.gz) 63 Kb Biological Unit Coordinates (1qk0.pdb2.gz) 62 Kb LPC: Ligand-Protein Contacts for 1QK0 CSU: Contacts of Structural Units for 1QK0 Likely Quarternary Molecular Structure file(s) for 1QK0 Structure Factors (265 Kb) Retrieve 1QK0 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1QK0 from S2C, [Save to disk] Re-refined 1qk0 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1QK0 in 3D

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Visual 3D analysis of 1QK0

Ramachandran plot from PDBSum

Structure-derived information

Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1QK0, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1qk0a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1qk0b_, region B [Jmol] [rasmolscript] [script source] Class (fold), Architecture (subfold), Topology, Homologous superfamily from CATH Summaries and structural analyses of PDB data files from PDBSum Identification of Protein Pockets & Cavities at CASTp

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1qk0_A] [1qk0] [1qk0_B] SWISS-PROT database: [P07987] Domain organization of [GUX2_TRIRE] by SWISSPFAM

Other resources with information on 1QK0

Community annotation for 1QK0 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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