1MRQ	Oxidoreductase	date	Sep 18, 2002
title	Crystal Structure Of Human 20alpha-Hsd In Ternary Complex Wi And 20alpha-Hydroxy-Progesterone
authors	J.F.Couture, P.Legrand, L.Cantin, V.Luu-The, F.Labrie, R.Breton
compound		source
Molecule: Aldo-Keto Reductase Family 1 Member C1 Chain: A Synonym: 20alpha-Hydroxysteroid Dehydrogenase, Trans-1,2- Dihydrobenzene-1,2-Diol Dehydrogenase, High-Affinity Hepati Acid-Binding Protein, Hbab, Chlordecone Reductase Homolog H Dihydrodiol Dehydrogenase 2, Dd2; Ec: 1.1.1.149 Engineered: Yes		Organism_scientific: Homo Sapiens Organism_common: Human Organism_taxid: 9606 Tissue: Liver Expression_system: Escherichia Coli Bl21 Expression_system_taxid: 511693 Expression_system_strain: Bl21 Expression_system_vector_type: Plasmid Expression_system_plasmid: Pgex
symmetry	Space Group: P 21 21 21	R_factor 0.173 R_Free 0.194
crystal cell	length a length b length c angle alpha angle beta angle gamma 39.650 83.540 100.680 90.00 90.00 90.00
method	X-Ray Diffraction	resolution	1.59 Å
ligand	BME, NAP, STR	enzyme	Oxidoreductase E.C.1.1.1.149 BRENDA
related structures	by homologous chain: 1Q5M, 1RY8
Gene Ontology	Chain Function Process Component A
Primary reference	Human 20alpha-hydroxysteroid dehydrogenase: crystallographic and site-directed mutagenesis studies lead to the identification of an alternative binding site for C21-steroids., Couture JF, Legrand P, Cantin L, Luu-The V, Labrie F, Breton R, J Mol Biol 2003 Aug 15;331(3):593-604. PMID:12899831

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (64 Kb) [Save to disk] Biological Unit Coordinates (1mrq.pdb1.gz) 59 Kb LPC: Ligand-Protein Contacts for 1MRQ CSU: Contacts of Structural Units for 1MRQ Likely Quarternary Molecular Structure file(s) for 1MRQ Structure Factors (317 Kb) Retrieve 1MRQ in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1MRQ from S2C, [Save to disk] Re-refined 1mrq structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1MRQ 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 1MRQ

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 1MRQ, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1mrqa_, region A [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: [1mrq] [1mrq_A] SWISS-PROT database: [Q04828] Domain organization of [AK1C1_HUMAN] by SWISSPFAM

Other resources with information on 1MRQ

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

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