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[[ | ==Crystal structure of Q54A mutant protein of Bst-RNase HIII== | ||
<StructureSection load='3asm' size='340' side='right' caption='[[3asm]], [[Resolution|resolution]] 2.60Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[3asm]] is a 1 chain structure with sequence from [http://en.wikipedia.org/wiki/Geobacillus_stearothermophilus Geobacillus stearothermophilus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3ASM OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3ASM FirstGlance]. <br> | |||
</td></tr><tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[2d0a|2d0a]]</td></tr> | |||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Ribonuclease_H Ribonuclease H], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.26.4 3.1.26.4] </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=3asm FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3asm OCA], [http://www.rcsb.org/pdb/explore.do?structureId=3asm RCSB], [http://www.ebi.ac.uk/pdbsum/3asm PDBsum]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Ribonuclease H3 from Bacillus stearothermophilus (Bst-RNase H3) has the N-terminal TBP-like substrate-binding domain. To identify the substrate binding site in this domain, the mutant proteins of the intact protein and isolated N-domain, in which six of the seventeen residues corresponding to those involved in DNA binding of TBP are individually mutated to Ala, were constructed. All of them exhibited decreased enzymatic activities and/or substrate-binding affinities when compared to those of the parent proteins, suggesting that the N-terminal domain of RNase H3 uses the flat surface of the beta-sheet for substrate binding as TBP to bind DNA. This domain may greatly change conformation upon substrate binding. | |||
Identification of the substrate binding site in the N-terminal TBP-like domain of RNase H3.,Miyashita S, Tadokoro T, Angkawidjaja C, You DJ, Koga Y, Takano K, Kanaya S FEBS Lett. 2011 Jul 21;585(14):2313-7. Epub 2011 Jun 12. PMID:21664908<ref>PMID:21664908</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
==See Also== | ==See Also== | ||
*[[Ribonuclease|Ribonuclease]] | *[[Ribonuclease|Ribonuclease]] | ||
== References == | |||
== | <references/> | ||
< | __TOC__ | ||
</StructureSection> | |||
[[Category: Geobacillus stearothermophilus]] | [[Category: Geobacillus stearothermophilus]] | ||
[[Category: Ribonuclease H]] | [[Category: Ribonuclease H]] | ||
Revision as of 12:31, 5 November 2014
Crystal structure of Q54A mutant protein of Bst-RNase HIIICrystal structure of Q54A mutant protein of Bst-RNase HIII
Structural highlights
Publication Abstract from PubMedRibonuclease H3 from Bacillus stearothermophilus (Bst-RNase H3) has the N-terminal TBP-like substrate-binding domain. To identify the substrate binding site in this domain, the mutant proteins of the intact protein and isolated N-domain, in which six of the seventeen residues corresponding to those involved in DNA binding of TBP are individually mutated to Ala, were constructed. All of them exhibited decreased enzymatic activities and/or substrate-binding affinities when compared to those of the parent proteins, suggesting that the N-terminal domain of RNase H3 uses the flat surface of the beta-sheet for substrate binding as TBP to bind DNA. This domain may greatly change conformation upon substrate binding. Identification of the substrate binding site in the N-terminal TBP-like domain of RNase H3.,Miyashita S, Tadokoro T, Angkawidjaja C, You DJ, Koga Y, Takano K, Kanaya S FEBS Lett. 2011 Jul 21;585(14):2313-7. Epub 2011 Jun 12. PMID:21664908[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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