1NH6	Hydrolase	date	Dec 18, 2002
title	Structure Of S. Marcescens Chitinase A, E315l, Complex With Hexasaccharide
authors	N.N.Aronson Jr., B.A.Halloran, M.F.Alexyev, L.Amable, J.D.Madura L.Pasupulati, C.Worth, P.Van Roey
compound		source
Molecule: Chitinase A Chain: A Ec: 3.2.1.14 Engineered: Yes Mutation: Yes		Organism_scientific: Serratia Marcescens Organism_taxid: 615 Expression_system: Escherichia Coli Bl21(De3) Expression_system_taxid: 469008 Expression_system_strain: Bl21(De3) Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet23a
symmetry	Space Group: I 2 2 2	R_factor 0.197 R_Free 0.227
crystal cell	length a length b length c angle alpha angle beta angle gamma 78.100 135.230 188.070 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.05 Å
ligand	NAG	enzyme	Hydrolase E.C.3.2.1.14 BRENDA
related structures	by homologous chain: 1CTN, 1FFQ
Gene Ontology	Chain Function Process Component A
Primary reference	Family 18 chitinase-oligosaccharide substrate interaction: subsite preference and anomer selectivity of Serratia marcescens chitinase A., Aronson NN Jr, Halloran BA, Alexyev MF, Amable L, Madura JD, Pasupulati L, Worth C, Van Roey P, Biochem J 2003 Nov 15;376(Pt 1):87-95. PMID:12932195

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (101 Kb) [Save to disk] Biological Unit Coordinates (1nh6.pdb1.gz) 96 Kb LPC: Ligand-Protein Contacts for 1NH6 CSU: Contacts of Structural Units for 1NH6 Likely Quarternary Molecular Structure file(s) for 1NH6 Structure Factors (572 Kb) Retrieve 1NH6 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1NH6 from S2C, [Save to disk] Re-refined 1nh6 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1NH6 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 1NH6

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 1NH6, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1nh6a2, region A:133-443,A:517-563 [Jmol] [rasmolscript] [script source]     - Domain d1nh6a1, region A:24-132 [Jmol] [rasmolscript] [script source]     - Domain d1nh6a3, region A:444-516 [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: [1nh6_A] [1nh6] SWISS-PROT database: [P07254] Domain organization of [CHIA_SERMA] by SWISSPFAM Domains found in 1NH6: [Glyco_18] [PKD ] by SMART

Other resources with information on 1NH6

Community annotation for 1NH6 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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