authors Mao, C., Cook, W.J., Zhou, M., Fedorov, A.A., Almo, S.C., Ealick, S.E.
compound source
length a length b length c angle alpha angle beta angle gamma
method X-Ray Diffractionresolution 2.00
ligand HPA, SO4 BindingDB enzyme
related structures by homologous chain: 1A9O, 1A9T

Primary referenceCalf spleen purine nucleoside phosphorylase complexed with substrates and substrate analogues., Mao C, Cook WJ, Zhou M, Federov AA, Almo SC, Ealick SE, Biochemistry 1998 May 19;37(20):7135-46. PMID:9585525
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (50 Kb) [Save to disk]
  • Biological Unit Coordinates (1a9q.pdb1.gz) 136 Kb
  • LPC: Ligand-Protein Contacts for 1A9Q
  • CSU: Contacts of Structural Units for 1A9Q
  • Likely Quarternary Molecular Structure file(s) for 1A9Q
  • Retrieve 1A9Q in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1A9Q from S2C, [Save to disk]
  • View 1A9Q 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 1A9Q
  • 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 1A9Q, from MSDmotif at EBI
  • Genome occurence of 1A9Q's fold from GeneCensus
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1a9q__, region [Jmol] [rasmolscript] [script source]
  • Fold representative 1a9q 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: [1a9q_A] [1a9q]
  • SWISS-PROT database: [P55859]
  • Domain organization of [PNPH_BOVIN] by SWISSPFAM
  • Other resources with information on 1A9Q
  • Community annotation for 1A9Q 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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