1QO2 Crystal structure of N-((5'-phosphoribosyl)-formimino)-5-aminoimidazol-4-carboxamid ribonucleotid isomerase (EC, HisA) date
authors Wilmanns, M., Lang, D., Thoma, R., Sterner, R.
compound source
R_Free 0.246
length a length b length c angle alpha angle beta angle gamma
method X-Ray Diffractionresolution 1.85
ligand MSE enzyme
A, B

Primary referenceStructural evidence for evolution of the beta/alpha barrel scaffold by gene duplication and fusion., Lang D, Thoma R, Henn-Sax M, Sterner R, Wilmanns M, Science 2000 Sep 1;289(5484):1546-50. PMID:10968789
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (91 Kb) [Save to disk]
  • Biological Unit Coordinates (1qo2.pdb1.gz) 45 Kb
  • Biological Unit Coordinates (1qo2.pdb2.gz) 45 Kb
  • LPC: Ligand-Protein Contacts for 1QO2
  • CSU: Contacts of Structural Units for 1QO2
  • Likely Quarternary Molecular Structure file(s) for 1QO2
  • Retrieve 1QO2 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1QO2 from S2C, [Save to disk]
  • View 1QO2 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 1QO2
  • Cartoon representation from PDB Cartoon
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • Crystal Contacts, from CryCo at Weizmann Institute
  • 3D motif for 1QO2, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1qo2a_, region A [Jmol] [rasmolscript] [script source]
        - Domain d1qo2b_, region B [Jmol] [rasmolscript] [script source]
  • Fold representative 1qo2 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: [1qo2_A] [1qo2_B] [1qo2]
  • SWISS-PROT database: [Q9X0C7]
  • Domain organization of [HIS4_THEMA] by SWISSPFAM
  • Other resources with information on 1QO2
  • Community annotation for 1QO2 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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