3u44
From Proteopedia
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| - | '''Unreleased structure''' | ||
| - | + | ==Crystal structure of AddAB-DNA complex== | |
| - | + | <StructureSection load='3u44' size='340' side='right'caption='[[3u44]], [[Resolution|resolution]] 3.20Å' scene=''> | |
| - | + | == Structural highlights == | |
| - | + | <table><tr><td colspan='2'>[[3u44]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Bacillus_subtilis Bacillus subtilis]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3U44 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3U44 FirstGlance]. <br> | |
| - | + | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.201Å</td></tr> | |
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=SF4:IRON/SULFUR+CLUSTER'>SF4</scene></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=3u44 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3u44 OCA], [https://pdbe.org/3u44 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3u44 RCSB], [https://www.ebi.ac.uk/pdbsum/3u44 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3u44 ProSAT]</span></td></tr> | ||
| + | </table> | ||
| + | == Function == | ||
| + | [https://www.uniprot.org/uniprot/ADDA_BACSU ADDA_BACSU] An essential component of the DNA double-stranded break repair machinery, the heterodimer acts as both an ATP-dependent DNA helicase and an ATP-dependent, dual-direction single-stranded exonuclease. Recognizes the B.subtilis chi site (5'-AGCGG-3') which transforms the enzyme from a helicase which degrades both DNA strands to one with only 5' -> 3' exonuclease activity. This generates a double-stranded DNA with a protruding 3'-terminated single-stranded tail suitable for the initiation of homologous recombination (chi fragment). The AddA nuclease domain in particular is required for chi fragment generation; this subunit has 3' -> 5' nuclease and helicase activity. RecA thread formation during DNA double-strand break repair requires RecJ or AddAB.<ref>PMID:8387145</ref> <ref>PMID:10756102</ref> <ref>PMID:17570399</ref> | ||
| + | == References == | ||
| + | <references/> | ||
| + | __TOC__ | ||
| + | </StructureSection> | ||
| + | [[Category: Bacillus subtilis]] | ||
| + | [[Category: Large Structures]] | ||
| + | [[Category: Krajewski W]] | ||
| + | [[Category: Saikrishnan K]] | ||
| + | [[Category: Wigley D]] | ||
Current revision
Crystal structure of AddAB-DNA complex
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