1XX2	Hydrolase	date	Nov 03, 2004
title	Refinement Of P99 Beta-Lactamase From Enterobacter Cloacae
authors	J.R.Knox, T.Sun
compound		source
Molecule: Beta-Lactamase Chain: A, B Synonym: Cephalosporinase Ec: 3.5.2.6		Organism_scientific: Enterobacter Cloacae Organism_taxid: 550 Strain: P99
symmetry	Space Group: P 1 21 1	R_factor 0.175 R_Free 0.214
crystal cell	length a length b length c angle alpha angle beta angle gamma 46.500 83.470 95.460 90.00 90.01 90.00
method	X-Ray Diffraction	resolution	1.88 Å
ligand		enzyme	Hydrolase E.C.3.5.2.6 BRENDA
note	1XX2 supersedes 2BLT
related structures	by homologous chain: 1L0E, 1LL9
Gene Ontology	Chain Function Process Component A, B
Primary reference	Evolution of an enzyme activity: crystallographic structure at 2-A resolution of cephalosporinase from the ampC gene of Enterobacter cloacae P99 and comparison with a class A penicillinase., Lobkovsky E, Moews PC, Liu H, Zhao H, Frere JM, Knox JR, Proc Natl Acad Sci U S A. 1993 Dec 1;90(23):11257-61. PMID:8248237

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (123 Kb) [Save to disk] Biological Unit Coordinates (1xx2.pdb1.gz) 62 Kb Biological Unit Coordinates (1xx2.pdb2.gz) 61 Kb CSU: Contacts of Structural Units for 1XX2 Likely Quarternary Molecular Structure file(s) for 1XX2 Structure Factors (256 Kb) Retrieve 1XX2 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1XX2 from S2C, [Save to disk] Re-refined 1xx2 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1XX2 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 1XX2

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 1XX2, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1xx2a_, region A [Jmol] [rasmolscript] [script source]     - Domain d1xx2b_, region B [Jmol] [rasmolscript] [script source]

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1xx2_B] [1xx2_A] [1xx2] SWISS-PROT database: [P05364] Domain organization of [AMPC_ENTCL] by SWISSPFAM

Other resources with information on 1XX2

Community annotation for 1XX2 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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