1HKJ	Hydrolase	date	Mar 10, 2003
title	Crystal Structure Of Human Chitinase In Complex With Methyla
authors	F.V.Rao, D.R.Houston, R.G.Boot, J.M.F.G.Aerts, S.Sakuda, D.M.F.Va
compound		source
Molecule: Chitotriosidase Chain: A Fragment: Chitotriosidase, Residues 22-386 Synonym: Endochitinase Ec: 3.2.1.14 Other_details: Methylallosamidin (Chitinase Inhbitor)		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Cell: Macrophage
symmetry	Space Group: P 43 21 2	R_factor 0.211 R_Free 0.258
crystal cell	length a length b length c angle alpha angle beta angle gamma 93.990 93.990 87.086 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.60 Å
ligand	AMI, NA1, NAA	enzyme	Hydrolase E.C.3.2.1.14 BRENDA
related structures	by homologous chain: 1HKI, 1LG1
Gene Ontology	Chain Function Process Component A
Primary reference	Crystal structures of allosamidin derivatives in complex with human macrophage chitinase., Rao FV, Houston DR, Boot RG, Aerts JM, Sakuda S, van Aalten DM, J Biol Chem 2003 May 30;278(22):20110-6. Epub 2003 Mar 14. PMID:12639956

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (66 Kb) [Save to disk] Biological Unit Coordinates (1hkj.pdb1.gz) 60 Kb LPC: Ligand-Protein Contacts for 1HKJ CSU: Contacts of Structural Units for 1HKJ Likely Quarternary Molecular Structure file(s) for 1HKJ Structure Factors (92 Kb) Retrieve 1HKJ in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1HKJ from S2C, [Save to disk] Re-refined 1hkj structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1HKJ 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 1HKJ

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 1HKJ, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1hkja1, region A:22-266,A:335-386 [Jmol] [rasmolscript] [script source]     - Domain d1hkja2, region A:267-334 [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: [1hkj_A] [1hkj] SWISS-PROT database: [Q13231] Domain organization of [CHIT1_HUMAN] by SWISSPFAM Domain found in 1HKJ: [Glyco_18 ] by SMART

Other resources with information on 1HKJ

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

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