1AB4	Topoisomerase	date	Feb 03, 1997
title	59kda Fragment Of Gyrase A From E. Coli
authors	J.H.M.Cabral, A.Maxwell, R.C.Liddington
compound		source
Molecule: Gyrase A Chain: A Fragment: 59kda Fragment Ec: 5.99.1.3 Engineered: Yes		Organism_scientific: Escherichia Coli Organism_taxid: 562 Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: I 41	R_factor 0.226 R_Free 0.310
crystal cell	length a length b length c angle alpha angle beta angle gamma 119.630 119.630 94.980 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.80 Å
ligand		enzyme	Isomerase E.C.5.99.1.3 BRENDA
related structures	by homologous chain: 1X75
Gene Ontology	Chain Function Process Component A
Primary reference	Crystal structure of the breakage-reunion domain of DNA gyrase., Morais Cabral JH, Jackson AP, Smith CV, Shikotra N, Maxwell A, Liddington RC, Nature 1997 Aug 28;388(6645):903-6. PMID:9278055

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (75 Kb) [Save to disk] Biological Unit Coordinates (1ab4.pdb1.gz) 140 Kb CSU: Contacts of Structural Units for 1AB4 Likely Quarternary Molecular Structure file(s) for 1AB4 Structure Factors (295 Kb) Retrieve 1AB4 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1AB4 from S2C, [Save to disk] Re-refined 1ab4 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1AB4 in 3D

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Visual 3D analysis of 1AB4

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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 1AB4, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1ab4__, 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: [1ab4_A] [1ab4] SWISS-PROT database: [P0AES4] Domain organization of [GYRA_ECOLI] by SWISSPFAM Domain found in 1AB4: [TOP4c ] by SMART

Other resources with information on 1AB4

Community annotation for 1AB4 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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