1ko9
From Proteopedia
(Difference between revisions)
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| - | + | ==Native Structure of the Human 8-oxoguanine DNA Glycosylase hOGG1== | |
| - | + | <StructureSection load='1ko9' size='340' side='right' caption='[[1ko9]], [[Resolution|resolution]] 2.15Å' scene=''> | |
| - | + | == Structural highlights == | |
| - | + | <table><tr><td colspan='2'>[[1ko9]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1KO9 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1KO9 FirstGlance]. <br> | |
| - | ==Disease== | + | </td></tr><tr><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene><br> |
| + | <tr><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1ebm|1ebm]], [[1fn7|1fn7]]</td></tr> | ||
| + | <tr><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">OGG1 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=9606 Homo sapiens])</td></tr> | ||
| + | <tr><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1ko9 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1ko9 OCA], [http://www.rcsb.org/pdb/explore.do?structureId=1ko9 RCSB], [http://www.ebi.ac.uk/pdbsum/1ko9 PDBsum]</span></td></tr> | ||
| + | <table> | ||
| + | == Disease == | ||
[[http://www.uniprot.org/uniprot/OGG1_HUMAN OGG1_HUMAN]] Defects in OGG1 may be a cause of renal cell carcinoma (RCC) [MIM:[http://omim.org/entry/144700 144700]]. It is a heterogeneous group of sporadic or hereditary carcinoma derived from cells of the proximal renal tubular epithelium. It is subclassified into clear cell renal carcinoma (non-papillary carcinoma), papillary renal cell carcinoma, chromophobe renal cell carcinoma, collecting duct carcinoma with medullary carcinoma of the kidney, and unclassified renal cell carcinoma. | [[http://www.uniprot.org/uniprot/OGG1_HUMAN OGG1_HUMAN]] Defects in OGG1 may be a cause of renal cell carcinoma (RCC) [MIM:[http://omim.org/entry/144700 144700]]. It is a heterogeneous group of sporadic or hereditary carcinoma derived from cells of the proximal renal tubular epithelium. It is subclassified into clear cell renal carcinoma (non-papillary carcinoma), papillary renal cell carcinoma, chromophobe renal cell carcinoma, collecting duct carcinoma with medullary carcinoma of the kidney, and unclassified renal cell carcinoma. | ||
| - | + | == Function == | |
| - | ==Function== | + | |
[[http://www.uniprot.org/uniprot/OGG1_HUMAN OGG1_HUMAN]] DNA repair enzyme that incises DNA at 8-oxoG residues. Excises 7,8-dihydro-8-oxoguanine and 2,6-diamino-4-hydroxy-5-N-methylformamidopyrimidine (FAPY) from damaged DNA. Has a beta-lyase activity that nicks DNA 3' to the lesion. | [[http://www.uniprot.org/uniprot/OGG1_HUMAN OGG1_HUMAN]] DNA repair enzyme that incises DNA at 8-oxoG residues. Excises 7,8-dihydro-8-oxoguanine and 2,6-diamino-4-hydroxy-5-N-methylformamidopyrimidine (FAPY) from damaged DNA. Has a beta-lyase activity that nicks DNA 3' to the lesion. | ||
| + | == Evolutionary Conservation == | ||
| + | [[Image:Consurf_key_small.gif|200px|right]] | ||
| + | Check<jmol> | ||
| + | <jmolCheckbox> | ||
| + | <scriptWhenChecked>select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ko/1ko9_consurf.spt"</scriptWhenChecked> | ||
| + | <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | ||
| + | <text>to colour the structure by Evolutionary Conservation</text> | ||
| + | </jmolCheckbox> | ||
| + | </jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/chain_selection.php?pdb_ID=2ata ConSurf]. | ||
| + | <div style="clear:both"></div> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | Both 8oxo-guanine and formamidopyrimidines are major products of oxidative DNA damage that can result in the fixation of transversion mutations following replication if left unrepaired. These lesions are targeted by the N-DNA glycosylase hOgg1, which catalyses excision of the aberrant base followed by cleavage of the phosphate backbone directly 5' to the resultant abasic site in a context, dependent manner. We present the crystal structure of native hOgg1 refined to 2.15 A resolution that reveals a number of highly significant conformational changes on association with DNA that are clearly required for substrate recognition and specificity. Changes of this magnitude appear to be unique to hOgg1 and have not been observed in any of the DNA-glycosylase structures analysed to date where both native and DNA-bound forms are available. It has been possible to identify a mechanism whereby the catalytic residue Lys 249 is "primed" for nucleophilic attack of the N-glycosidic bond. | ||
| - | + | Reciprocal "flipping" underlies substrate recognition and catalytic activation by the human 8-oxo-guanine DNA glycosylase.,Bjoras M, Seeberg E, Luna L, Pearl LH, Barrett TE J Mol Biol. 2002 Mar 22;317(2):171-7. PMID:11902834<ref>PMID:11902834</ref> | |
| - | + | ||
| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
==See Also== | ==See Also== | ||
| - | *[[DNA | + | *[[DNA glycosylase|DNA glycosylase]] |
| - | + | == References == | |
| - | == | + | <references/> |
| - | + | __TOC__ | |
| + | </StructureSection> | ||
[[Category: Homo sapiens]] | [[Category: Homo sapiens]] | ||
[[Category: Barrett, T E.]] | [[Category: Barrett, T E.]] | ||
Revision as of 11:38, 3 October 2014
Native Structure of the Human 8-oxoguanine DNA Glycosylase hOGG1
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