1IEM	Hydrolase	date	Apr 10, 2001
title	Crystal Structure Of Ampc Beta-Lactamase From E. Coli In Com A Boronic Acid Inhibitor (1, Cefb4)
authors	R.A.Powers, E.Caselli, P.J.Focia, F.Prati, B.K.Shoichet
compound		source
Molecule: Beta-Lactamase Chain: A, B Synonym: Ampc Beta-Lactamase, Cephalosporinase Ec: 3.5.2.6 Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Jm109 Expression_system_vector_type: Plasmid Expression_system_plasmid: P0g0295
symmetry	Space Group: C 1 2 1	R_factor 0.182 R_Free 0.228
crystal cell	length a length b length c angle alpha angle beta angle gamma 118.560 78.060 97.240 90.00 115.44 90.00
method	X-Ray Diffraction	resolution	2.30 Å
ligand	CB4, PO4 BindingDB	enzyme	Hydrolase E.C.3.5.2.6 BRENDA
related structures	by homologous chain: 1BLS, 3BLS
Gene Ontology	Chain Function Process Component A, B
Primary reference	Structures of ceftazidime and its transition-state analogue in complex with AmpC beta-lactamase: implications for resistance mutations and inhibitor design., Powers RA, Caselli E, Focia PJ, Prati F, Shoichet BK, Biochemistry 2001 Aug 7;40(31):9207-14. PMID:11478888

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (120 Kb) [Save to disk] Biological Unit Coordinates (1iem.pdb1.gz) 59 Kb Biological Unit Coordinates (1iem.pdb2.gz) 59 Kb LPC: Ligand-Protein Contacts for 1IEM CSU: Contacts of Structural Units for 1IEM Likely Quarternary Molecular Structure file(s) for 1IEM Structure Factors (272 Kb) Retrieve 1IEM in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1IEM from S2C, [Save to disk] Re-refined 1iem structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1IEM 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 1IEM

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 1IEM, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1iema_, region A [Jmol] [rasmolscript] [script source]     - Domain d1iemb_, region B [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: [1iem_A] [1iem_B] [1iem] SWISS-PROT database: [P00811] Domain organization of [AMPC_ECOLI] by SWISSPFAM

Other resources with information on 1IEM

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

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