1brg: Difference between revisions
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<StructureSection load='1brg' size='340' side='right'caption='[[1brg]], [[Resolution|resolution]] 2.20Å' scene=''> | <StructureSection load='1brg' size='340' side='right'caption='[[1brg]], [[Resolution|resolution]] 2.20Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[1brg]] is a 3 chain structure with sequence from [ | <table><tr><td colspan='2'>[[1brg]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/"bacillus_amyloliquifaciens"_(sic)_fukumoto_1943 "bacillus amyloliquifaciens" (sic) fukumoto 1943]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1BRG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1BRG FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ZN:ZINC+ION'>ZN</scene></td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1brg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1brg OCA], [https://pdbe.org/1brg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1brg RCSB], [https://www.ebi.ac.uk/pdbsum/1brg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1brg ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[[ | [[https://www.uniprot.org/uniprot/RNBR_BACAM RNBR_BACAM]] Hydrolyzes phosphodiester bonds in RNA, poly- and oligoribonucleotides resulting in 3'-nucleoside monophosphates via 2',3'-cyclophosphate intermediates. | ||
== Evolutionary Conservation == | == Evolutionary Conservation == | ||
[[Image:Consurf_key_small.gif|200px|right]] | [[Image:Consurf_key_small.gif|200px|right]] | ||
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==See Also== | ==See Also== | ||
*[[Barnase 3D structures|Barnase 3D structures]] | *[[Barnase 3D structures|Barnase 3D structures]] | ||
*[[Ribonuclease|Ribonuclease | *[[Ribonuclease 3D structures|Ribonuclease 3D structures]] | ||
== References == | == References == | ||
<references/> | <references/> | ||
Revision as of 13:41, 19 May 2021
CRYSTALLOGRAPHIC ANALYSIS OF PHE->LEU SUBSTITUTION IN THE HYDROPHOBIC CORE OF BARNASECRYSTALLOGRAPHIC ANALYSIS OF PHE->LEU SUBSTITUTION IN THE HYDROPHOBIC CORE OF BARNASE
Structural highlights
Function[RNBR_BACAM] Hydrolyzes phosphodiester bonds in RNA, poly- and oligoribonucleotides resulting in 3'-nucleoside monophosphates via 2',3'-cyclophosphate intermediates. Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMedThe crystal structure of a barnase mutant, Phe-->Leu7 has been determined to 2.2 A resolution. No structural rearrangement is observed near the mutated residue. The F7L mutation is highly destabilizing and this is caused by the loss of extensive van der Waals contacts that wild-type Phe7 made with its neighbouring residues, and the exposure of a large hydrophobic pocket on the surface of the protein. The side-chain conformations of the mutated Leu7 residue have torsion angles chi(1) ranging from -138 degrees to -168 degrees and chi(2) ranging from +16 degrees to +70 degrees, for the three molecules in the asymmetric unit. These angles do not agree with the most frequently observed conformations in the protein side-chain rotamer library [Ponder & Richards (1987). J. Mol. Biol. 193, 775-791]. However, when compared to a more recent 'backbone-dependent' rotamer library [Dunbrack & Karplus (1993). J. Mol. Biol. 230, 543-574], the side-chain conformation of Leu7 agrees well with that of the most frequently observed rotamers. The side-chain conformation of Leu7 was found to be dictated by two factors: it has the lowest conformational energy and it buries the most hydrophobic surface area. Crystallographic analysis of Phe-->Leu substitution in the hydrophobic core of barnase.,Chen YW, Fersht AR, Henrick K Acta Crystallogr D Biol Crystallogr. 1995 Mar 1;51(Pt 2):220-31. PMID:15299323[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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