1jih

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[[Image:1jih.gif|left|200px]]<br /><applet load="1jih" size="350" color="white" frame="true" align="right" spinBox="true"
 
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caption="1jih, resolution 2.25&Aring;" />
 
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'''Yeast DNA Polymerase ETA'''<br />
 
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==Overview==
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==Yeast DNA Polymerase ETA==
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DNA polymerase eta is unique among eukaryotic polymerases in its proficient ability to replicate through a variety of distorting DNA lesions. We report here the crystal structure of the catalytic core of S. cerevisiae DNA polymerase eta, determined at 2.25A resolution. The structure reveals a novel polydactyl right hand-shaped molecule with a unique polymerase-associated domain. We identify the catalytic residues and show that the fingers and thumb domains are unusually small and stubby. In particular, the unexpected absence of helices "O" and "O1" in the fingers domain suggests that openness of the active site is the critical feature which enables DNA polymerase eta to replicate through DNA lesions such as a UV-induced cis-syn thymine-thymine dimer.
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<StructureSection load='1jih' size='340' side='right'caption='[[1jih]], [[Resolution|resolution]] 2.25&Aring;' scene=''>
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== Structural highlights ==
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<table><tr><td colspan='2'>[[1jih]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JIH OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1JIH FirstGlance]. <br>
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</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.25&#8491;</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1jih FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1jih OCA], [https://pdbe.org/1jih PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1jih RCSB], [https://www.ebi.ac.uk/pdbsum/1jih PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1jih ProSAT]</span></td></tr>
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</table>
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== Function ==
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[https://www.uniprot.org/uniprot/POLH_YEAST POLH_YEAST] DNA polymerase specifically involved in DNA repair. Plays an important role in translesion synthesis, where the normal high fidelity DNA polymerases cannot proceed and DNA synthesis stalls. Plays an important role in the repair of UV-induced pyrimidine dimers. Depending on the context, it inserts the correct base, but causes frequent base transitions and transversions. Efficiently incorporates nucleotides opposite to other UV or oxidative DNA damages like O(6)-methylguanine, 7,8-dihydro-8-oxoguanine, 2,6-diamino-4-hydroxy-5-formamidopyrimidine of 2'-deoxyguanosine (FaPydG), or p-benzoquinone DNA adducts.<ref>PMID:9409821</ref> <ref>PMID:10347143</ref> <ref>PMID:10601233</ref> <ref>PMID:9974380</ref> <ref>PMID:10924462</ref> <ref>PMID:10713149</ref> <ref>PMID:11027270</ref> <ref>PMID:10932195</ref> <ref>PMID:10725365</ref> <ref>PMID:11062246</ref> <ref>PMID:11545742</ref> <ref>PMID:11113193</ref> <ref>PMID:11238937</ref> <ref>PMID:11054429</ref> <ref>PMID:12110599</ref> <ref>PMID:11861920</ref> <ref>PMID:12899630</ref> <ref>PMID:12665597</ref> <ref>PMID:12888515</ref> <ref>PMID:12692307</ref> <ref>PMID:14527996</ref> <ref>PMID:15157108</ref> <ref>PMID:15544332</ref> <ref>PMID:15284331</ref> <ref>PMID:15333698</ref> <ref>PMID:15024063</ref> <ref>PMID:15779911</ref> <ref>PMID:16181813</ref> <ref>PMID:15520252</ref> <ref>PMID:16366567</ref> <ref>PMID:15743815</ref> <ref>PMID:16866379</ref> <ref>PMID:16387871</ref> <ref>PMID:16415180</ref>
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== Evolutionary Conservation ==
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[[Image:Consurf_key_small.gif|200px|right]]
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Check<jmol>
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<jmolCheckbox>
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<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/ji/1jih_consurf.spt"</scriptWhenChecked>
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<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked>
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<text>to colour the structure by Evolutionary Conservation</text>
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</jmolCheckbox>
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</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/main_output.php?pdb_ID=1jih ConSurf].
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<div style="clear:both"></div>
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==About this Structure==
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==See Also==
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1JIH is a [http://en.wikipedia.org/wiki/Single_protein Single protein] structure of sequence from [http://en.wikipedia.org/wiki/Saccharomyces_cerevisiae Saccharomyces cerevisiae]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1JIH OCA].
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*[[DNA polymerase 3D structures|DNA polymerase 3D structures]]
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== References ==
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==Reference==
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<references/>
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Structure of the catalytic core of S. cerevisiae DNA polymerase eta: implications for translesion DNA synthesis., Trincao J, Johnson RE, Escalante CR, Prakash S, Prakash L, Aggarwal AK, Mol Cell. 2001 Aug;8(2):417-26. PMID:[http://ispc.weizmann.ac.il//pmbin/getpm?pmid=11545743 11545743]
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__TOC__
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</StructureSection>
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[[Category: Large Structures]]
[[Category: Saccharomyces cerevisiae]]
[[Category: Saccharomyces cerevisiae]]
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[[Category: Single protein]]
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[[Category: Aggarwal AK]]
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[[Category: Aggarwal, A K.]]
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[[Category: Escalante CR]]
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[[Category: Escalante, C R.]]
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[[Category: Johnson RE]]
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[[Category: Johnson, R E.]]
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[[Category: Prakash L]]
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[[Category: Prakash, L.]]
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[[Category: Prakash S]]
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[[Category: Prakash, S.]]
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[[Category: Trincao J]]
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[[Category: Trincao, J.]]
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[[Category: dna polymerase]]
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[[Category: translesion]]
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[[Category: yeast]]
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''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Feb 21 13:23:02 2008''
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Current revision

Yeast DNA Polymerase ETA

PDB ID 1jih

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