1QCA	Transferase (Acyltransferase)	date	Aug 03, 1995
title	Quadruple Mutant Q92c, N146f, Y168f, I172v Type III Cat Comp Fusidic Acid. Crystals Grown At Ph 6.3. X-Ray Data Collecte Temperature
authors	A.G.W.Leslie
compound		source
Molecule: Type III Chloramphenicol Acetyltransferase Chain: A Synonym: Cat III Ec: 2.3.1.28 Engineered: Yes Mutation: Yes		Organism_scientific: Shigella Flexneri Organism_taxid: 623 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Jm101 Expression_system_plasmid: Puc18 Other_details: Transmissible Plasmid R387 Isolated From Shi Flexneri
symmetry	Space Group: H 3 2	R_factor R_Free NULL
crystal cell	length a length b length c angle alpha angle beta angle gamma 107.810 107.810 124.130 90.00 90.00 120.00
method	X-Ray Diffraction	resolution	2.20 Å
ligand	CO, FUA	enzyme	Transferase E.C.2.3.1.28 BRENDA
note	1QCA is a representative structure
related structures	by homologous chain: 1CLA, 4CLA
Gene Ontology	Chain Function Process Component A
Primary reference	Steroid recognition by chloramphenicol acetyltransferase: engineering and structural analysis of a high affinity fusidic acid binding site., Murray IA, Cann PA, Day PJ, Derrick JP, Sutcliffe MJ, Shaw WV, Leslie AG, J Mol Biol 1995 Dec 15;254(5):993-1005. PMID:7500366

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (44 Kb) [Save to disk] Biological Unit Coordinates (1qca.pdb1.gz) 110 Kb Biological Unit Coordinates (1qca.pdb2.gz) 219 Kb LPC: Ligand-Protein Contacts for 1QCA CSU: Contacts of Structural Units for 1QCA Likely Quarternary Molecular Structure file(s) for 1QCA Retrieve 1QCA in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1QCA from S2C, [Save to disk]

View 1QCA 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 1QCA

Ramachandran plot from PDBSum

Structure-derived information

Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1QCA, from MSDmotif at EBI Genome occurence of 1QCA's fold from GeneCensus Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1qca__, region [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: [1qca_A] [1qca] SWISS-PROT database: [P00484] Domain organization of [CAT3_ECOLX] by SWISSPFAM Domain found in 1QCA: [CAT ] by SMART

Other resources with information on 1QCA

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

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