4wyp: Difference between revisions
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4wyp]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4WYP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4WYP FirstGlance]. <br> | <table><tr><td colspan='2'>[[4wyp]] is a 2 chain structure with sequence from [https://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4WYP OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4WYP FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</scene></td></tr> | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.502Å</td></tr> | ||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=AMP:ADENOSINE+MONOPHOSPHATE'>AMP</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=4wyp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4wyp OCA], [https://pdbe.org/4wyp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4wyp RCSB], [https://www.ebi.ac.uk/pdbsum/4wyp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4wyp ProSAT]</span></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=4wyp FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4wyp OCA], [https://pdbe.org/4wyp PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4wyp RCSB], [https://www.ebi.ac.uk/pdbsum/4wyp PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4wyp ProSAT]</span></td></tr> | ||
</table> | </table> | ||
Latest revision as of 10:39, 27 September 2023
The crystal structure of the A109G mutant of RNase A in complex with 5'AMPThe crystal structure of the A109G mutant of RNase A in complex with 5'AMP
Structural highlights
FunctionRNAS1_BOVIN Endonuclease that catalyzes the cleavage of RNA on the 3' side of pyrimidine nucleotides. Acts on single stranded and double stranded RNA.[1] Publication Abstract from PubMedThe role of internal dynamics in enzyme function is highly debated. Specifically, how small changes in structure far away from the reaction site alter protein dynamics and overall enzyme mechanisms is of wide interest in protein engineering. Using RNase A as a model, we demonstrate that elimination of a single methyl group located >10 A away from the reaction site significantly alters conformational integrity and binding properties of the enzyme. This A109G mutation does not perturb structure or thermodynamic stability, both in the apo and ligand-bound states. However, significant enhancement in conformational dynamics was observed for the bound variant, as probed over nano- to millisecond timescales, resulting in major ligand repositioning. These results illustrate the large effects caused by small changes in structure on long-range conformational dynamics and ligand specificities within proteins, further supporting the importance of preserving wild-type dynamics in enzyme systems that rely on flexibility for function. Perturbation of the Conformational Dynamics of an Active-Site Loop Alters Enzyme Activity.,Gagne D, French RL, Narayanan C, Simonovic M, Agarwal PK, Doucet N Structure. 2015 Dec 1;23(12):2256-66. doi: 10.1016/j.str.2015.10.011. Epub 2015, Nov 19. PMID:26655472[2] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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