1N9B	Hydrolase	date	Nov 22, 2002
title	Ultrahigh Resolution Structure Of A Class A Beta-Lactamase: Mechanism And Specificity Of The Extended-Spectrum Shv-2 En
authors	M.Nukaga, K.Mayama, A.M.Hujer, R.A.Bonomo, J.R.Knox
compound		source
Molecule: Beta-Lactamase Shv-2 Chain: A Synonym: Penicillinase Ec: 3.5.2.6 Engineered: Yes		Organism_scientific: Klebsiella Pneumoniae Organism_taxid: 573 Gene: Bla Expression_system: Escherichia Coli Str. K-12 Substr. Dh10b Expression_system_taxid: 316385 Expression_system_strain: Dh10b Expression_system_vector_type: Plasmid Expression_system_plasmid: Pbcsk Expression_system_gene: Bla
symmetry	Space Group: P 21 21 21	R_factor R_Free
crystal cell	length a length b length c angle alpha angle beta angle gamma 49.740 55.580 83.300 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	0.90 Å
ligand	EPE, MA4, MPD	enzyme	Hydrolase E.C.3.5.2.6 BRENDA
related structures	by homologous chain: 1M40, 1ONG
Gene Ontology	Chain Function Process Component A
Primary reference	Ultrahigh resolution structure of a class A beta-lactamase: on the mechanism and specificity of the extended-spectrum SHV-2 enzyme., Nukaga M, Mayama K, Hujer AM, Bonomo RA, Knox JR, J Mol Biol 2003 Apr 18;328(1):289-301. PMID:12684014

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (110 Kb) [Save to disk] Biological Unit Coordinates (1n9b.pdb1.gz) 106 Kb LPC: Ligand-Protein Contacts for 1N9B CSU: Contacts of Structural Units for 1N9B Likely Quarternary Molecular Structure file(s) for 1N9B Structure Factors (1350 Kb) Retrieve 1N9B in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1N9B from S2C, [Save to disk] Re-refined 1n9b structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1N9B 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 1N9B

Ramachandran plot from PDBSum

Structure-derived information

Conformational Epitope Prediction for 1N9B from the CEP Server. Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1N9B, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1n9ba_, region A [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: [1n9b_A] [1n9b] SWISS-PROT database: [P30896] Domain organization of [BLA3_KLEPN] by SWISSPFAM

Other resources with information on 1N9B

Community annotation for 1N9B at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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