1QHH Hydrolase date May 14, 1999
title Structure Of Dna Helicase With Adpnp
authors P.Soultanas, M.S.Dillingham, S.S.Velankar, D.B.Wigley
compound source
Molecule: Protein (Pcra (Subunit))
Chain: A
Engineered: Yes
Organism_scientific: Geobacillus Stearothermophilus
Organism_taxid: 1422
Strain: Nca1503
Gene: Pcra
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_vector_type: T7 Promoter
Expression_system_plasmid: Pet22
Expression_system_gene: Pcra

Molecule: Protein (Pcra (Subunit))
Chain: B
Engineered: Yes

Organism_scientific: Geobacillus Stearothermophilus
Organism_taxid: 1422
Strain: Nca1503
Gene: Pcra
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_vector_type: T7 Promoter
Expression_system_plasmid: Pet22
Expression_system_gene: Pcra

Molecule: Protein (Pcra (Subunit))
Chain: C
Engineered: Yes

Organism_scientific: Geobacillus Stearothermophilus
Organism_taxid: 1422
Strain: Nca1503
Gene: Pcra
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_vector_type: T7 Promoter
Expression_system_plasmid: Pet22
Expression_system_gene: Pcra

Molecule: Protein (Pcra (Subunit))
Chain: D
Engineered: Yes

Organism_scientific: Geobacillus Stearothermophilus
Organism_taxid: 1422
Strain: Nca1503
Gene: Pcra
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_vector_type: T7 Promoter
Expression_system_plasmid: Pet22
Expression_system_gene: Pcra
symmetry Space Group: P 65
R_factor 0.228 R_Free 0.285
crystal
cell
length a length b length c angle alpha angle beta angle gamma
138.936 138.936 111.642 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.50 Å
ligand ATP enzyme
note 1QHH is a representative structure
related structures by homologous chain: 1QHG, 2PJR
Gene
Ontology
ChainFunctionProcessComponent
A


B


C


D


Primary referenceDNA binding mediates conformational changes and metal ion coordination in the active site of PcrA helicase., Soultanas P, Dillingham MS, Velankar SS, Wigley DB, J Mol Biol 1999 Jul 2;290(1):137-48. PMID:10388562
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (112 Kb) [Save to disk]
  • Biological Unit Coordinates (1qhh.pdb1.gz) 106 Kb
  • LPC: Ligand-Protein Contacts for 1QHH
  • CSU: Contacts of Structural Units for 1QHH
  • Likely Quarternary Molecular Structure file(s) for 1QHH
  • Structure Factors (320 Kb)
  • Retrieve 1QHH in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1QHH from S2C, [Save to disk]
  • Re-refined 1qhh structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1QHH 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 1QHH
  • 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 1QHH, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1qhh.1, region A:,B:,C:,D [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: [1qhh] [1qhh_D] [1qhh_B] [1qhh_A] [1qhh_C]
  • SWISS-PROT database: [P56255]
  • Domain organization of [PCRA_BACST] by SWISSPFAM
  • Other resources with information on 1QHH
  • Community annotation for 1QHH 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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