1HQS	Oxidoreductase	date	Dec 19, 2000
title	Crystal Structure Of Isocitrate Dehydrogenase From Bacillus
authors	S.K.Singh, K.Matsuno, D.C.Laporte, L.J.Banaszak
compound		source
Molecule: Isocitrate Dehydrogenase Chain: A, B Synonym: Oxalosuccinate Decarboxylase Ec: 1.1.1.42 Engineered: Yes		Organism_scientific: Bacillus Subtilis Organism_taxid: 1423 Gene: Citc Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Kme44 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pkm14
symmetry	Space Group: P 1 21 1	R_factor 0.202 R_Free 0.249
crystal cell	length a length b length c angle alpha angle beta angle gamma 73.690 73.290 80.900 90.00 109.48 90.00
method	X-Ray Diffraction	resolution	1.55 Å
ligand	CIT, CME, PGO, PGR	enzyme	Oxidoreductase E.C.1.1.1.42 BRENDA
related structures	by homologous chain: 1PB1
Gene Ontology	Chain Function Process Component A, B
Primary reference	Crystal structure of Bacillus subtilis isocitrate dehydrogenase at 1.55 A. Insights into the nature of substrate specificity exhibited by Escherichia coli isocitrate dehydrogenase kinase/phosphatase., Singh SK, Matsuno K, LaPorte DC, Banaszak LJ, J Biol Chem 2001 Jul 13;276(28):26154-63. PMID:11290745

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (152 Kb) [Save to disk] Biological Unit Coordinates (1hqs.pdb1.gz) 147 Kb LPC: Ligand-Protein Contacts for 1HQS CSU: Contacts of Structural Units for 1HQS Likely Quarternary Molecular Structure file(s) for 1HQS Structure Factors (784 Kb) Retrieve 1HQS in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1HQS from S2C, [Save to disk] Re-refined 1hqs structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1HQS 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 1HQS

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 1HQS, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1hqsa_, region A [Jmol] [rasmolscript] [script source]     - Domain d1hqsb_, 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: [1hqs_B] [1hqs_A] [1hqs] SWISS-PROT database: [P39126] Domain organization of [IDH_BACSU] by SWISSPFAM Domain found in 1HQS: [Iso_dh ] by SMART

Other resources with information on 1HQS

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

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