1QP0 Transcription Dna date Jun 01, 1999
title Purine Repressor-Hypoxanthine-Palindromic Operator Complex
authors A.Glasfeld, A.N.Koehler, M.A.Schumacher, R.G.Brennan
compound source
Molecule: Dna (5'- D(Tpapcpgpcpapapcpcpgpgptptpgpcpgpt)-3');
Chain: M
Engineered: Yes
Synthetic: Yes

Molecule: Protein (Purine Nucleotide Synthesis Repressor)
Chain: A
Synonym: Pura
Engineered: Yes

Organism_scientific: Escherichia Coli
Organism_taxid: 562
Gene: Purr
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_strain: Bl21 Lambda De3
Expression_system_vector_type: Plasmid
Expression_system_vector: Pet24a
Expression_system_plasmid: Pdna100\:K55a
Expression_system_gene: Purr
symmetry Space Group: C 2 2 21
R_factor 0.168 R_Free NULL
length a length b length c angle alpha angle beta angle gamma
176.470 95.020 81.050 90.00 90.00 90.00
method X-Ray Diffractionresolution 2.90 Å
ligand HPA enzyme
related structures by homologous chain: 1QP7, 1QQA

Primary referenceThe role of lysine 55 in determining the specificity of the purine repressor for its operators through minor groove interactions., Glasfeld A, Koehler AN, Schumacher MA, Brennan RG, J Mol Biol 1999 Aug 13;291(2):347-61. PMID:10438625
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (65 Kb) [Save to disk]
  • Biological Unit Coordinates (1qp0.pdb1.gz) 121 Kb
  • LPC: Ligand-Protein Contacts for 1QP0
  • CSU: Contacts of Structural Units for 1QP0
  • Likely Quarternary Molecular Structure file(s) for 1QP0
  • Retrieve 1QP0 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1QP0 from S2C, [Save to disk]
  • View 1QP0 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 1QP0
  • Ramachandran plot from PDBSum
  • Structure-derived information
  • Dipole moment, from Dipole Server at Weizmann Institute
  • 3D motif for 1QP0, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1qp0a1, region A:3-58 [Jmol] [rasmolscript] [script source]
        - Domain d1qp0a2, region A:59-340 [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: [1qp0_M] [1qp0_A] [1qp0]
  • SWISS-PROT database: [P0ACP7]
  • Domain organization of [PURR_ECOLI] by SWISSPFAM
  • Domain found in 1QP0: [HTH_LACI ] by SMART
  • Other resources with information on 1QP0
  • Community annotation for 1QP0 at PDBWiki (http://pdbwiki.org)
  • Movements, Movies and Images
  • Images from IMB Jena Image Library of Biological Macromolecules.

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