1t7p
From Proteopedia
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T7 DNA POLYMERASE COMPLEXED TO DNA PRIMER/TEMPLATE,A NUCLEOSIDE TRIPHOSPHATE, AND ITS PROCESSIVITY FACTOR THIOREDOXIN
Overview
DNA polymerases change their specificity for nucleotide substrates with each catalytic cycle, while achieving error frequencies in the range of 10(-5) to 10(-6). Here we present a 2.2 A crystal structure of the replicative DNA polymerase from bacteriophage T7 complexed with a primer-template and a nucleoside triphosphate in the polymerase active site. The structure illustrates how nucleotides are selected in a template-directed manner, and provides a structural basis for a metal-assisted mechanism of phosphoryl transfer by a large group of related polymerases.
About this Structure
1T7P is a Protein complex structure of sequences from Bacteriophage t7 and Escherichia coli with and as ligands. Active as DNA-directed DNA polymerase, with EC number 2.7.7.7 Full crystallographic information is available from OCA.
Reference
Crystal structure of a bacteriophage T7 DNA replication complex at 2.2 A resolution., Doublie S, Tabor S, Long AM, Richardson CC, Ellenberger T, Nature. 1998 Jan 15;391(6664):251-8. PMID:9440688
Page seeded by OCA on Thu Feb 21 15:10:45 2008
Categories: Bacteriophage t7 | DNA-directed DNA polymerase | Escherichia coli | Protein complex | Doublie, S. | Ellenberger, T. | Long, A M. | Richardson, C C. | Tabor, S. | DG3 | MG | Complex (hydrolase/electron transport/dna) | Dna replication | Nucleotidyl transferase | Processivity factor | Sequencing | T7 dna polymerase | Thioredoxin
