1Q57	Transferase	date	Aug 06, 2003
title	The Crystal Structure Of The Bifunctional Primase-Helicase O Bacteriophage T7
authors	E.A.Toth, Y.Li, M.R.Sawaya, Y.Cheng, T.Ellenberger
compound		source
Molecule: Dna Primasehelicase Chain: A, B, C, D, E, F, G Ec: 2.7.7.- Engineered: Yes Mutation: Yes		Organism_scientific: Enterobacteria Phage T7 Organism_taxid: 10760 Gene: 4 Expression_system: Escherichia Coli Expression_system_taxid: 562
symmetry	Space Group: P 1 21 1	R_factor 0.299 R_Free 0.326
crystal cell	length a length b length c angle alpha angle beta angle gamma 117.179 171.567 118.581 90.00 99.86 90.00
method	X-Ray Diffraction	resolution	3.45 Å
ligand		enzyme	Transferase E.C.2.7.7 BRENDA
Gene Ontology	Chain Function Process Component F, A, D, C, G, E, B
Primary reference	The crystal structure of the bifunctional primase-helicase of bacteriophage T7., Toth EA, Li Y, Sawaya MR, Cheng Y, Ellenberger T, Mol Cell 2003 Nov;12(5):1113-23. PMID:14636571

Data retrieval

Asymmetric unit, PDB entry: [header only] [complete with coordinates] (448 Kb) [Save to disk] Biological Unit Coordinates (1q57.pdb1.gz) 438 Kb CSU: Contacts of Structural Units for 1Q57 Likely Quarternary Molecular Structure file(s) for 1Q57 Structure Factors (739 Kb) Retrieve 1Q57 in mmCIF format [Save to disk] SEQRES to COORDINATES correlation for 1Q57 from S2C, [Save to disk] Re-refined 1q57 structure from PDB_REDO, a databank with updated and optimised macromolecular X-ray diffraction structure models

View 1Q57 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 1Q57

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 1Q57, from MSDmotif at EBI Classification of representative domains in scop (Structural Classification of Proteins)     - Domain d1q57a1, region A:264-549 [Jmol] [rasmolscript] [script source]     - Domain d1q57a2, region A:64-263 [Jmol] [rasmolscript] [script source]     - Domain d1q57b1, region B:264-549 [Jmol] [rasmolscript] [script source]     - Domain d1q57b2, region B:64-263 [Jmol] [rasmolscript] [script source]     - Domain d1q57c1, region C:264-549 [Jmol] [rasmolscript] [script source]     - Domain d1q57c2, region C:64-263 [Jmol] [rasmolscript] [script source]     - Domain d1q57d1, region D:264-549 [Jmol] [rasmolscript] [script source]     - Domain d1q57d2, region D:64-263 [Jmol] [rasmolscript] [script source]     - Domain d1q57e1, region E:264-549 [Jmol] [rasmolscript] [script source]     - Domain d1q57e2, region E:64-263 [Jmol] [rasmolscript] [script source]     - Domain d1q57f1, region F:264-549 [Jmol] [rasmolscript] [script source]     - Domain d1q57f2, region F:64-263 [Jmol] [rasmolscript] [script source]     - Domain d1q57g1, region G:264-549 [Jmol] [rasmolscript] [script source]     - Domain d1q57g2, region G:64-263 [Jmol] [rasmolscript] [script source]

Sequence-derived information

View one-letter amino acid or nucleotide sequence for each chain: [1q57_G] [1q57_C] [1q57] [1q57_A] [1q57_D] [1q57_F] [1q57_E] [1q57_B] SWISS-PROT database: [P03692] Domain organization of [PRIM_BPT7] by SWISSPFAM Domain found in 1Q57: [TOPRIM ] by SMART

Other resources with information on 1Q57

Community annotation for 1Q57 at PDBWiki (http://pdbwiki.org) MMDB (Entrez's Structure Database)

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