1CR1	Transferase	date	Aug 12, 1999
title	Crystal Structure Of The Helicase Domain Of The Gene 4 Prote 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
crystal cell	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 Diffraction	resolution	2.30 Å
ligand	SO4, TTP	enzyme	Transferase E.C.2.7.7 BRENDA
related structures	by homologous chain: 1CR2
Gene Ontology	Chain Function Process Component A
Primary reference	Crystal 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] (44 Kb) [Save to disk] Biological Unit Coordinates (1cr1.pdb1.gz) 235 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

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 1CR1, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1cr1a_, region A [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: [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)

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