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| | ==Crystal structure of mutant Ribonuclease S (F8Nva)== | | ==Crystal structure of mutant Ribonuclease S (F8Nva)== |
| - | <StructureSection load='1z3m' size='340' side='right' caption='[[1z3m]], [[Resolution|resolution]] 2.00Å' scene=''> | + | <StructureSection load='1z3m' size='340' side='right'caption='[[1z3m]], [[Resolution|resolution]] 2.00Å' scene=''> |
| | == Structural highlights == | | == Structural highlights == |
| - | <table><tr><td colspan='2'>[[1z3m]] is a 2 chain structure with sequence from [http://en.wikipedia.org/wiki/Bos_taurus Bos taurus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1Z3M OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=1Z3M FirstGlance]. <br> | + | <table><tr><td colspan='2'>[[1z3m]] 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=1Z3M OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1Z3M FirstGlance]. <br> |
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=SO4:SULFATE+ION'>SO4</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]] 2Å</td></tr> |
| - | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=NLE:NORLEUCINE'>NLE</scene>, <scene name='pdbligand=NVA:NORVALINE'>NVA</scene></td></tr> | + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=NLE:NORLEUCINE'>NLE</scene>, <scene name='pdbligand=NVA:NORVALINE'>NVA</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</scene></td></tr> |
| - | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[1d5d|1d5d]], [[1rbh|1rbh]], [[1d5e|1d5e]], [[1d5h|1d5h]], [[1rbc|1rbc]], [[1rbd|1rbd]], [[1z3l|1z3l]], [[1z3p|1z3p]]</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=1z3m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1z3m OCA], [https://pdbe.org/1z3m PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1z3m RCSB], [https://www.ebi.ac.uk/pdbsum/1z3m PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1z3m ProSAT]</span></td></tr> |
| - | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/Pancreatic_ribonuclease Pancreatic ribonuclease], with EC number [http://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.27.5 3.1.27.5] </span></td></tr>
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| - | <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=1z3m FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1z3m OCA], [http://pdbe.org/1z3m PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=1z3m RCSB], [http://www.ebi.ac.uk/pdbsum/1z3m PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=1z3m ProSAT]</span></td></tr> | + | |
| | </table> | | </table> |
| | == Function == | | == Function == |
| - | [[http://www.uniprot.org/uniprot/RNAS1_BOVIN RNAS1_BOVIN]] Endonuclease that catalyzes the cleavage of RNA on the 3' side of pyrimidine nucleotides. Acts on single stranded and double stranded RNA.<ref>PMID:7479688</ref> | + | [https://www.uniprot.org/uniprot/RNAS1_BOVIN RNAS1_BOVIN] Endonuclease that catalyzes the cleavage of RNA on the 3' side of pyrimidine nucleotides. Acts on single stranded and double stranded RNA.<ref>PMID:7479688</ref> |
| | == 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== |
| - | *[[Ribonuclease|Ribonuclease]] | + | *[[Ribonuclease 3D structures|Ribonuclease 3D structures]] |
| - | *[[Temp|Temp]]
| + | |
| | == References == | | == References == |
| | <references/> | | <references/> |
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| | </StructureSection> | | </StructureSection> |
| | [[Category: Bos taurus]] | | [[Category: Bos taurus]] |
| - | [[Category: Pancreatic ribonuclease]] | + | [[Category: Large Structures]] |
| - | [[Category: Das, M]] | + | [[Category: Das M]] |
| - | [[Category: Ghosh, S]] | + | [[Category: Ghosh S]] |
| - | [[Category: Rao, B Vasudeva]]
| + | [[Category: Varadarajan R]] |
| - | [[Category: Varadarajan, R]] | + | [[Category: Vasudeva Rao B]] |
| - | [[Category: Cavity]] | + | |
| - | [[Category: Hydrolase]]
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| - | [[Category: S-peptide]]
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| - | [[Category: S-protein]]
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| Structural highlights
Function
RNAS1_BOVIN Endonuclease that catalyzes the cleavage of RNA on the 3' side of pyrimidine nucleotides. Acts on single stranded and double stranded RNA.[1]
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 PubMed
While the hydrophobic driving force is thought to be a major contributor to protein stability, it is difficult to experimentally dissect out its contribution to the overall free energy of folding. We have made large to small substitutions of buried hydrophobic residues at positions 8 and 13 in the peptide/protein complex, RNase-S, and have characterized the structures by X-ray crystallography. The thermodynamics of association of these mutant S peptides with S protein was measured in the presence of different concentrations of methanol and ethanol. The reduction in the strength of the hydrophobic driving force in the presence of these organic solvents was estimated from surface-tension data as well as from the dependence of the DeltaC(p) of protein/peptide binding on the alcohol concentration. The data indicated a decrease in the strength of the hydrophobic driving force of about 30-40% over a 0-30% range of the alcohol concentration. We observe that large to small substitutions destabilize the protein. However, the amount of destabilization, relative to the wild type, is independent of the alcohol concentration over the range of alcohol concentrations studied. The data clearly indicate that decreased stability of the mutants is primarily due to the loss of packing interactions rather than a reduced hydrophobic driving force and suggest a value of the hydrophobic driving force of less than 18 cal mol(-)(1) A(2).
Attempts to delineate the relative contributions of changes in hydrophobicity and packing to changes in stability of ribonuclease S mutants.,Das M, Rao BV, Ghosh S, Varadarajan R Biochemistry. 2005 Apr 19;44(15):5923-30. PMID:15823052[2]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ delCardayre SB, Ribo M, Yokel EM, Quirk DJ, Rutter WJ, Raines RT. Engineering ribonuclease A: production, purification and characterization of wild-type enzyme and mutants at Gln11. Protein Eng. 1995 Mar;8(3):261-73. PMID:7479688
- ↑ Das M, Rao BV, Ghosh S, Varadarajan R. Attempts to delineate the relative contributions of changes in hydrophobicity and packing to changes in stability of ribonuclease S mutants. Biochemistry. 2005 Apr 19;44(15):5923-30. PMID:15823052 doi:10.1021/bi050001+
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