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== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[1rbx]] is a 1 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=1RBX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1RBX FirstGlance]. <br>
<table><tr><td colspan='2'>[[1rbx]] is a 1 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=1RBX OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1RBX FirstGlance]. <br>
</td></tr><tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/Pancreatic_ribonuclease Pancreatic ribonuclease], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=3.1.27.5 3.1.27.5] </span></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]] 1.69&#8491;</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=1rbx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rbx OCA], [https://pdbe.org/1rbx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1rbx RCSB], [https://www.ebi.ac.uk/pdbsum/1rbx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1rbx 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=1rbx FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1rbx OCA], [https://pdbe.org/1rbx PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1rbx RCSB], [https://www.ebi.ac.uk/pdbsum/1rbx PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1rbx ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[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>
[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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</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1rbx ConSurf].
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1rbx ConSurf].
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== Publication Abstract from PubMed ==
Virtually all studies of the protein-folding reaction add either heat, acid, or a chemical denaturant to an aqueous protein solution in order to perturb the protein structure. When chemical denaturants are used, very high concentrations are usually necessary to observe any change in protein structure. In a solution with such high denaturant concentrations, both the structure of the protein and the structure of the solvent around the protein can be altered. X-ray crystallography is the obvious experimental technique to probe both types of changes. In this paper, we report the crystal structures of dihydrofolate reductase with urea and of ribonuclease A with guanidinium chloride. These two classic denaturants have similar effects on the native structure of the protein. The most important change that occurs is a reduction in the overall thermal factor. These structures offer a molecular explanation for the reduction in mobility. Although the reduction is observed only with the native enzyme in the crystal, a similar decrease in mobility has also been observed in the unfolded state in solution (Makhatadze G, Privalov PL. 1992. Protein interactions with urea and guanidinium chloride: A calorimetric study.
The effect of denaturants on protein structure.,Dunbar J, Yennawar HP, Banerjee S, Luo J, Farber GK Protein Sci. 1997 Aug;6(8):1727-33. PMID:9260285<ref>PMID:9260285</ref>
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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==See Also==
==See Also==
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[[Category: Bos taurus]]
[[Category: Bos taurus]]
[[Category: Large Structures]]
[[Category: Large Structures]]
[[Category: Pancreatic ribonuclease]]
[[Category: Dunbar JLH]]
[[Category: Dunbar, J L.H]]
[[Category: Farber GK]]
[[Category: Farber, G K]]

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