1CR1 Transferase date Aug 12, 1999
title Crystal Structure Of The Helicase Domain Of The Gene 4 Protein Of Bacteriophage T7: Complex With Dttp
authors M.R.Sawaya, S.Guo, S.Tabor, C.C.Richardson, T.Ellenberger
compound source
Molecule: Dna Primasehelicase
Chain: A
Fragment: Helicase Domain
Ec: 2.7.7.-
Engineered: Yes
Organism_scientific: Enterobacteria Phage T7
Organism_taxid: 10760
Expression_system: Escherichia Coli
Expression_system_taxid: 562
Expression_system_plasmid: Pet17b
symmetry Space Group: P 61
R_factor 0.235 R_Free 0.288
length a length b length c angle alpha angle beta angle gamma
80.653 80.653 86.042 90.00 90.00 120.00
method X-Ray Diffractionresolution 2.30 Å
ligand SO4, TTP enzyme Transferase E.C.2.7.7 BRENDA
related structures by homologous chain: 1CR2

Primary referenceCrystal structure of the helicase domain from the replicative helicase-primase of bacteriophage T7., Sawaya MR, Guo S, Tabor S, Richardson CC, Ellenberger T, Cell 1999 Oct 15;99(2):167-77. PMID:10535735
Data retrieval
  • Asymmetric unit, PDB entry: [header only] [complete with coordinates] (45 Kb) [Save to disk]
  • Biological Unit Coordinates (1cr1.pdb1.gz) 239 Kb
  • LPC: Ligand-Protein Contacts for 1CR1
  • CSU: Contacts of Structural Units for 1CR1
  • Likely Quarternary Molecular Structure file(s) for 1CR1
  • Structure Factors (115 Kb)
  • Retrieve 1CR1 in mmCIF format [Save to disk]
  • SEQRES to COORDINATES correlation for 1CR1 from S2C, [Save to disk]
  • Re-refined 1cr1 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models
  • View 1CR1 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 1CR1
  • 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 1CR1, from MSDmotif at EBI
  • Classification of representative domains in scop (Structural Classification of Proteins)
        - Domain d1cr1a_, region A [Jmol] [rasmolscript] [script source]
  • Fold representative 1cr1 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: [1cr1] [1cr1_A]
  • SWISS-PROT database: [P03692]
  • Domain organization of [PRIM_BPT7] by SWISSPFAM
  • Other resources with information on 1CR1
  • Community annotation for 1CR1 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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