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==Structure of an O6-Methylguanine DNA Methyltransferase from Methanococcus jannaschii (MJ1529)== | ==Structure of an O6-Methylguanine DNA Methyltransferase from Methanococcus jannaschii (MJ1529)== | ||
<StructureSection load='2g7h' size='340' side='right' caption='[[2g7h]], [[NMR_Ensembles_of_Models | 10 NMR models]]' scene=''> | <StructureSection load='2g7h' size='340' side='right'caption='[[2g7h]], [[NMR_Ensembles_of_Models | 10 NMR models]]' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[2g7h]] is a 1 chain structure with sequence from [ | <table><tr><td colspan='2'>[[2g7h]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Atcc_43067 Atcc 43067]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=2G7H OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=2G7H FirstGlance]. <br> | ||
</td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ogt ([ | </td></tr><tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">ogt ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=2190 ATCC 43067])</td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Methylated-DNA--[protein]-cysteine_S-methyltransferase Methylated-DNA--[protein]-cysteine S-methyltransferase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.1.1.63 2.1.1.63] </span></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=2g7h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=2g7h OCA], [https://pdbe.org/2g7h PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=2g7h RCSB], [https://www.ebi.ac.uk/pdbsum/2g7h PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=2g7h ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[[ | [[https://www.uniprot.org/uniprot/OGT_METJA OGT_METJA]] Involved in the cellular defense against the biological effects of O6-methylguanine (O6-MeG) in DNA. Repairs alkylated guanine in DNA by stoichiometrically transferring the alkyl group at the O-6 position to a cysteine residue in the enzyme. This is a suicide reaction: the enzyme is irreversibly inactivated.<ref>PMID:16826543</ref> | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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==See Also== | ==See Also== | ||
*[[DNA methyltransferase|DNA methyltransferase]] | *[[DNA methyltransferase 3D structures|DNA methyltransferase 3D structures]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
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</StructureSection> | </StructureSection> | ||
[[Category: Atcc 43067]] | [[Category: Atcc 43067]] | ||
[[Category: Large Structures]] | |||
[[Category: Roberts, A]] | [[Category: Roberts, A]] | ||
[[Category: Dna methyltransferase]] | [[Category: Dna methyltransferase]] | ||
Revision as of 21:50, 10 March 2021
Structure of an O6-Methylguanine DNA Methyltransferase from Methanococcus jannaschii (MJ1529)Structure of an O6-Methylguanine DNA Methyltransferase from Methanococcus jannaschii (MJ1529)
Structural highlights
Function[OGT_METJA] Involved in the cellular defense against the biological effects of O6-methylguanine (O6-MeG) in DNA. Repairs alkylated guanine in DNA by stoichiometrically transferring the alkyl group at the O-6 position to a cysteine residue in the enzyme. This is a suicide reaction: the enzyme is irreversibly inactivated.[1] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe structure of an O6-methylguanine-DNA methyltransferase (MGMT) from the thermophile Methanococcus jannaschii has been determined using multinuclear multidimensional NMR spectroscopy. The structure is similar to homologs from other organisms that have been determined by crystallography, with some variation in the N-terminal domain. The C-terminal domain is more highly conserved in both sequence and structure. Regions of the protein show broadening, reflecting conformational flexibility that is likely related to function. Structural studies of MJ1529, an O6-methylguanine-DNA methyltransferase.,Roberts A, Pelton JG, Wemmer DE Magn Reson Chem. 2006 Jul;44 Spec No:S71-82. PMID:16826543[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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