1SG4	Isomerase	date	Feb 23, 2004
title	Crystal Structure Of Human Mitochondrial Delta3-Delta2-Enoyl Isomerase
authors	S.T.Partanen, D.K.Novikov, A.N.Popov, A.M.Mursula, J.K.Hiltunen, R.K.Wierenga
compound		source
Molecule: 3,2-Trans-Enoyl-Coa Isomerase, Mitochondrial Chain: A, B, C Synonym: Dodecenoyl-Coa Delta-Isomerase Ec: 5.3.3.8 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Dci Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21(De3)Plyss Expression_system_vector_type: Plasmid Expression_system_plasmid: Pet3a
symmetry	Space Group: C 1 2 1	R_factor R_Free
crystal cell	length a length b length c angle alpha angle beta angle gamma 100.984 78.288 113.209 90.00 116.39 90.00
method	X-Ray Diffraction	resolution	1.30 Å
ligand	CO8	enzyme	Isomerase E.C.5.3.3.8 BRENDA
note	1SG4 is a representative structure
related structures	by homologous chain: 1XX4
Gene Ontology	Chain Function Process Component A, C, B
Primary reference	The 1.3 A crystal structure of human mitochondrial Delta3-Delta2-enoyl-CoA isomerase shows a novel mode of binding for the fatty acyl group., Partanen ST, Novikov DK, Popov AN, Mursula AM, Hiltunen JK, Wierenga RK, J Mol Biol 2004 Sep 24;342(4):1197-208. PMID:15351645

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (254 Kb) [Save to disk] Biological Unit Coordinates (1sg4.pdb1.gz) 249 Kb Biological Unit Coordinates (1sg4.pdb2.gz) 494 Kb LPC: Ligand-Protein Contacts for 1SG4 CSU: Contacts of Structural Units for 1SG4 Likely Quarternary Molecular Structure file(s) for 1SG4 Structure Factors (1497 Kb) Retrieve 1SG4 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1SG4 from S2C, [Save to disk] Re-refined 1sg4 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1SG4 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 1SG4

Ramachandran plot from PDBSum

Structure-derived information

Conformational Epitope Prediction for 1SG4 1SG4A 1SG4B 1SG4C from the CEP Server. Electron Density related parameters from EDS Electron Density Server, at Upsala Dipole moment, from Dipole Server at Weizmann Institute 3D motif for 1SG4, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1sg4] [1sg4_B] [1sg4_A] [1sg4_C] SWISS-PROT database: [P42126] Domain organization of [D3D2_HUMAN] by SWISSPFAM

Other resources with information on 1SG4

Community annotation for 1SG4 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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