2CHN	Hydrolase	date	Mar 15, 2006
title	Bacteroides Thetaiotaomicron Hexosaminidase With O-Glcnacase Nag-Thiazoline Complex
authors	R.J.Dennis, E.J.Taylor, M.S.Macauley, K.A.Stubbs, J.P.Turkenburg S.J.Hart, G.N.Black, D.J.Vocadlo, G.J.Davies
compound		source
Molecule: Glucosaminidase Chain: A, B Fragment: Residues 22-737 Synonym: Hexosaminiase Ec: 3.2.1.52 Engineered: Yes Other_details: Thiazoline Inhibitor Present		Organism_scientific: Bacteroides Thetaiotaomicron Organism_taxid: 226186 Strain: Vpi-5482 Expression_system: Escherichia Coli Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_plasmid: Pet28a
Molecule: Glucosaminidase Chain: C, D Fragment: C Terminus, Residues 650-653,660-668 Synonym: Hexosaminiase Ec: 3.2.1.52 Engineered: Yes		Organism_scientific: Bacteroides Thetaiotaomicron Organism_taxid: 226186 Strain: Vpi-5482 Expression_system: Escherichia Coli Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_plasmid: Pet28a
symmetry	Space Group: P 1	R_factor 0.185 R_Free 0.226
crystal cell	length a length b length c angle alpha angle beta angle gamma 51.714 94.544 99.479 75.34 93.86 77.07
method	X-Ray Diffraction	resolution	1.95 Å
ligand	CA, GOL, MSE, NGT	enzyme	Hydrolase E.C.3.2.1.52 BRENDA
note	2CHN (Molecule of the Month:pdb141)
Gene Ontology	Chain Function Process Component A, B
Primary reference	Structure and mechanism of a bacterial beta-glucosaminidase having O-GlcNAcase activity., Dennis RJ, Taylor EJ, Macauley MS, Stubbs KA, Turkenburg JP, Hart SJ, Black GN, Vocadlo DJ, Davies GJ, Nat Struct Mol Biol. 2006 Apr;13(4):365-71. Epub 2006 Mar 26. PMID:16565725

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (246 Kb) [Save to disk] Biological Unit Coordinates (2chn.pdb1.gz) 120 Kb Biological Unit Coordinates (2chn.pdb2.gz) 122 Kb LPC: Ligand-Protein Contacts for 2CHN CSU: Contacts of Structural Units for 2CHN Likely Quarternary Molecular Structure file(s) for 2CHN Structure Factors (932 Kb) Retrieve 2CHN in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 2CHN from S2C, [Save to disk] Re-refined 2chn structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 2CHN in 3D

Proteopedia, because life has more than 2D. On Jmol, a nice Rasmol like molecule viewer. This is good for easiest viewing of basic structure. On FirstGlance, an excellent tool for a guided tour on the structure components, by E. Martz.

Visual 3D analysis of 2CHN

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 2CHN, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [2chn_C] [2chn_B] [2chn_A] [2chn] [2chn_D] SWISS-PROT database: [Q89ZI2] Domain organization of [OGA_BACTN] by SWISSPFAM

Other resources with information on 2CHN

Community annotation for 2CHN at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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