1t7p | pdb_00001t7p
T7 DNA POLYMERASE COMPLEXED TO DNA PRIMER/TEMPLATE,A NUCLEOSIDE TRIPHOSPHATE, AND ITS PROCESSIVITY FACTOR THIOREDOXIN
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| 1t7p, resolution 2.2Å | |||||||||||||
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| Ligands: | 2DA, DA, DC, DG, DG3, DT, MG | ||||||||||||
| Activity: | DNA-directed DNA polymerase, with EC number 2.7.7.7 | ||||||||||||
| Resources: | FirstGlance, OCA, PDBsum, RCSB | ||||||||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||||||||
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 Enterobacteria phage t7 and Escherichia coli. 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 Sun Mar 30 23:52:26 2008
Proteopedia Page Contributors and Editors (what is this?)
- Pages with broken file links
- DNA-directed DNA polymerase
- Enterobacteria phage t7
- Escherichia coli
- Protein complex
- Doublie, S.
- Ellenberger, T.
- Long, A M.
- Richardson, C C.
- Tabor, S.
- Complex (hydrolase/electron transport/dna)
- Dna replication
- Nucleotidyl transferase
- Processivity factor
- Sequencing
- T7 dna polymerase
- Thioredoxin
