4rt3: Difference between revisions
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''' | ==Ternary complex crystal structure of DNA polymerase Beta with (alpha, beta)-NH-(beta,gamma)-CH2-dTTP== | ||
<StructureSection load='4rt3' size='340' side='right' caption='[[4rt3]], [[Resolution|resolution]] 1.92Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[4rt3]] is a 4 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4RT3 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4RT3 FirstGlance]. <br> | |||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=C6T:2-DEOXY-5-O-[(S)-HYDROXY{[(R)-HYDROXY(PHOSPHONOMETHYL)PHOSPHORYL]AMINO}PHOSPHORYL]-3,4-DIHYDROTHYMIDINE'>C6T</scene>, <scene name='pdbligand=CL:CHLORIDE+ION'>CL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NA:SODIUM+ION'>NA</scene></td></tr> | |||
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=DOC:2,3-DIDEOXYCYTIDINE-5-MONOPHOSPHATE'>DOC</scene></td></tr> | |||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[4rt2|4rt2]]</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=4rt3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4rt3 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=4rt3 RCSB], [http://www.ebi.ac.uk/pdbsum/4rt3 PDBsum]</span></td></tr> | |||
</table> | |||
== Function == | |||
[[http://www.uniprot.org/uniprot/DPOLB_HUMAN DPOLB_HUMAN]] Repair polymerase that plays a key role in base-excision repair. Has 5'-deoxyribose-5-phosphate lyase (dRP lyase) activity that removes the 5' sugar phosphate and also acts as a DNA polymerase that adds one nucleotide to the 3' end of the arising single-nucleotide gap. Conducts 'gap-filling' DNA synthesis in a stepwise distributive fashion rather than in a processive fashion as for other DNA polymerases.<ref>PMID:9207062</ref> <ref>PMID:9572863</ref> <ref>PMID:11805079</ref> <ref>PMID:21362556</ref> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Novel alpha,beta-CH2 and beta,gamma-NH (1a) or alpha,beta-NH and beta,gamma-CH2 (1b) "Met-Im" dTTPs were synthesized via monodemethylation of triethyl-dimethyl phosphorimido-bisphosphonate synthons (4a, 4b), formed via a base-induced [1,3]-rearrangement of precursors (3a, 3b) in a reaction with dimethyl or diethyl phosphochloridate. Anomerization during final bromotrimethylsilane (BTMS) deprotection after Mitsunobu conjugation with dT was avoided by microwave conditions. 1a was 9-fold more potent in inhibiting DNA polymerase beta, attributed to an NH-group interaction with R183 in the active site. | |||
Two Scaffolds from Two Flips: (alpha,beta)/(beta,gamma) CH2/NH "Met-Im" Analogues of dTTP.,Kadina AP, Kashemirov BA, Oertell K, Batra VK, Wilson SH, Goodman MF, McKenna CE Org Lett. 2015 Jun 5;17(11):2586-9. doi: 10.1021/acs.orglett.5b00799. Epub 2015, May 13. PMID:25970636<ref>PMID:25970636</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
== References == | |||
[[Category: | <references/> | ||
[[Category: Wilson, S | __TOC__ | ||
[[Category: | </StructureSection> | ||
[[Category: Batra, V K]] | |||
[[Category: Wilson, S H]] | |||
[[Category: Dna polymerase beta]] | |||
[[Category: Ternary complex]] | |||
[[Category: Transferase-dna complex]] | |||
Revision as of 12:12, 1 July 2015
Ternary complex crystal structure of DNA polymerase Beta with (alpha, beta)-NH-(beta,gamma)-CH2-dTTP
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