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;
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
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 Diffractionresolution 1.59 Å
ligand BME, NAP, STR enzyme Oxidoreductase E.C. BRENDA
related structures by homologous chain: 1Q5M, 1RY8

Primary referenceHuman 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] (65 Kb) [Save to disk]
  • Biological Unit Coordinates (1mrq.pdb1.gz) 60 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
  • Cartoon representation from PDB Cartoon
  • 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
  • Crystal Contacts, from CryCo 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]
  • Fold representative 1mrq from FSSP and Dali (Families of Structurally Similar Proteins)
  • 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)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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