4py5: Difference between revisions
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==Thermovibrio ammonificans RNase H3 in complex with 19-mer RNA/DNA== | ==Thermovibrio ammonificans RNase H3 in complex with 19-mer RNA/DNA== | ||
<StructureSection load='4py5' size='340' side='right' caption='[[4py5]], [[Resolution|resolution]] 2.10Å' scene=''> | <StructureSection load='4py5' size='340' side='right'caption='[[4py5]], [[Resolution|resolution]] 2.10Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4py5]] is a 3 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4PY5 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4PY5 FirstGlance]. <br> | <table><tr><td colspan='2'>[[4py5]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Thea1 Thea1]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4PY5 OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4PY5 FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=GOL:GLYCEROL'>GOL</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">Theam_0945 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=648996 THEA1])</td></tr> | |||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4py5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4py5 OCA], [http://pdbe.org/4py5 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4py5 RCSB], [http://www.ebi.ac.uk/pdbsum/4py5 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4py5 ProSAT]</span></td></tr> | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=4py5 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4py5 OCA], [http://pdbe.org/4py5 PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=4py5 RCSB], [http://www.ebi.ac.uk/pdbsum/4py5 PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=4py5 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
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__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | |||
[[Category: Thea1]] | |||
[[Category: Figiel, M]] | [[Category: Figiel, M]] | ||
[[Category: Nowotny, M]] | [[Category: Nowotny, M]] | ||
Revision as of 10:37, 17 April 2019
Thermovibrio ammonificans RNase H3 in complex with 19-mer RNA/DNAThermovibrio ammonificans RNase H3 in complex with 19-mer RNA/DNA
Structural highlights
Function[E8T217_THEA1] Endonuclease that specifically degrades the RNA of RNA-DNA hybrids (By similarity).[RuleBase:RU003515][SAAS:SAAS004641_004_003953] Publication Abstract from PubMedRNases H participate in the replication and maintenance of genomic DNA. RNase H1 cleaves the RNA strand of RNA/DNA hybrids, and RNase H2 in addition hydrolyzes the RNA residue of RNA-DNA junctions. RNase H3 is structurally closely related to RNases H2, but its biochemical properties are similar to type 1 enzymes. Its unique N-terminal substrate-binding domain (N-domain) is related to TATA-binding protein. Here, we report the first crystal structure of RNase H3 in complex with its RNA/DNA substrate. Just like RNases H1, type 3 enzyme recognizes the 2'-OH groups of the RNA strand and detects the DNA strand by binding a phosphate group and inducing B-form conformation. Moreover, the N-domain recognizes RNA and DNA in a manner that is highly similar to the hybrid-binding domain of RNases H1. Our structure demonstrates a remarkable example of parallel evolution of the elements used in the specific recognition of RNA and DNA. Crystal structure of RNase H3-substrate complex reveals parallel evolution of RNA/DNA hybrid recognition.,Figiel M, Nowotny M Nucleic Acids Res. 2014 Jul 12. pii: gku615. PMID:25016521[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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