3CAS	Oxidoreductase	date	Feb 20, 2008
title	Crystal Structure Of 5beta-Reductase (Akr1d1) In Complex Wit And 4-Androstenedione
authors	F.Faucher, L.Cantin, R.Breton
compound		source
Molecule: 3-Oxo-5-Beta-Steroid 4-Dehydrogenase Chain: A, B Synonym: Delta(4)-3-Ketosteroid 5-Beta-Reductase, Aldo-Keto Family 1 Member D1; Ec: 1.3.1.3 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Gene: Akr1d1, Srd5b1 Expression_system: Escherichia Coli Expression_system_taxid: 562 Expression_system_strain: Bl21(De3)Plys Expression_system_vector_type: Plasmid Expression_system_plasmid: Pgex6p1
symmetry	Space Group: P 21 21 21	R_factor 0.208 R_Free 0.238
crystal cell	length a length b length c angle alpha angle beta angle gamma 50.410 110.870 130.280 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	2.00 Å
ligand	ASD, BME, EDO, NAP	enzyme	Oxidoreductase E.C.1.3.1.3 BRENDA
Gene Ontology	Chain Function Process Component A, B
Primary reference	Crystal structures of human Delta4-3-ketosteroid 5beta-reductase (AKR1D1) reveal the presence of an alternative binding site responsible for substrate inhibition., Faucher F, Cantin L, Luu-The V, Labrie F, Breton R, Biochemistry. 2008 Dec 23;47(51):13537-46. PMID:19075558

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (122 Kb) [Save to disk] Biological Unit Coordinates (3cas.pdb1.gz) 59 Kb Biological Unit Coordinates (3cas.pdb2.gz) 60 Kb LPC: Ligand-Protein Contacts for 3CAS CSU: Contacts of Structural Units for 3CAS Likely Quarternary Molecular Structure file(s) for 3CAS Structure Factors (375 Kb) Retrieve 3CAS in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 3CAS from S2C, [Save to disk] Re-refined 3cas structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

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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 3CAS, from MSDmotif at EBI

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [3cas_B] [3cas] [3cas_A] SWISS-PROT database: [P51857] Domain organization of [AK1D1_HUMAN] by SWISSPFAM

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