2hpm

<table><tr><td colspan='2'>[[2hpm]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Atcc_25104 Atcc 25104]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2HPM OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2HPM FirstGlance]. <br>

</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=3PO:TRIPHOSPHATE'>3PO</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr>

<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/DNA-directed_DNA_polymerase DNA-directed DNA polymerase], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.7 2.7.7.7] </span></td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=2hpm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2hpm OCA], [http://pdbe.org/2hpm PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=2hpm RCSB], [http://www.ebi.ac.uk/pdbsum/2hpm PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=2hpm ProSAT]</span></td></tr>

[[http://www.uniprot.org/uniprot/DPO3A_THEAQ DPO3A_THEAQ]] DNA polymerase III is a complex, multichain enzyme responsible for most of the replicative synthesis in bacteria. This DNA polymerase also exhibits 3' to 5' exonuclease activity. The alpha chain is the DNA polymerase (By similarity).

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== Publication Abstract from PubMed ==

The crystal structure of Thermus aquaticus DNA polymerase III alpha subunit reveals that the structure of the catalytic domain of the eubacterial replicative polymerase is unrelated to that of the eukaryotic replicative polymerase but rather belongs to the Polbeta-like nucleotidyltransferase superfamily. A model of the polymerase complexed with both DNA and beta-sliding clamp interacting with a reoriented binding domain and internal beta binding site was constructed that is consistent with existing biochemical data. Within the crystal, two C-terminal domains are interacting through a surface that is larger than many dimer interfaces. Since replicative polymerases of eubacteria and eukaryotes/archaea are not homologous, the nature of the replicative polymerase in the last common ancestor is unknown. Although other possibilities have been proposed, the plausibility of a ribozyme DNA polymerase should be considered.

The structure of T. aquaticus DNA polymerase III is distinct from eukaryotic replicative DNA polymerases.,Bailey S, Wing RA, Steitz TA Cell. 2006 Sep 8;126(5):893-904. PMID:16959569<ref>PMID:16959569</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>

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== References ==

<references/>

[[Category: Atcc 25104]]

[[Category: DNA-directed DNA polymerase]]

[[Category: Bailey, S]]

[[Category: Steitz, T A]]

[[Category: Wing, R A]]

[[Category: Nucleotidyltransferase fold]]

[[Category: Transferase]]