1k18: Difference between revisions

<StructureSection load='1k18' size='340' side='right'caption='[[1k18]]' scene=''>

<table><tr><td colspan='2'>[[1k18]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full experimental information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1K18 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1K18 FirstGlance]. <br>

</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Solution NMR</td></tr>

<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1k18 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1k18 OCA], [https://pdbe.org/1k18 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1k18 RCSB], [https://www.ebi.ac.uk/pdbsum/1k18 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1k18 ProSAT]</span></td></tr>

[https://www.uniprot.org/uniprot/DPOLA_HUMAN DPOLA_HUMAN] Plays an essential role in the initiation of DNA replication. During the S phase of the cell cycle, the DNA polymerase alpha complex (composed of a catalytic subunit POLA1/p180, a regulatory subunit POLA2/p70 and two primase subunits PRIM1/p49 and PRIM2/p58) is recruited to DNA at the replicative forks via direct interactions with MCM10 and WDHD1. The primase subunit of the polymerase alpha complex initiates DNA synthesis by oligomerising short RNA primers on both leading and lagging strands. These primers are initially extended by the polymerase alpha catalytic subunit and subsequently transferred to polymerase delta and polymerase epsilon for processive synthesis on the lagging and leading strand, respectively. The reason this transfer occurs is because the polymerase alpha has limited processivity and lacks intrinsic 3' exonuclease activity for proofreading error, and therefore is not well suited for replicating long complexes.<ref>PMID:9518481</ref>  

     <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/k1/1k18_consurf.spt"</scriptWhenChecked>

</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=1k18 ConSurf].

*[[DNA polymerase 3D structures|DNA polymerase 3D structures]]

[[Category: Homo sapiens]]

[[Category: Large Structures]]

[[Category: Bose RN]]

[[Category: Evanics F]]

[[Category: Maurmann L]]

[[Category: Yang WW]]