View source for 3d6q


==The RNase A- 5'-Deoxy-5'-N-piperidinouridine complex==
<StructureSection load='3d6q' size='340' side='right'caption='[[3d6q]], [[Resolution|resolution]] 1.60&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[3d6q]] 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=3D6Q OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3D6Q FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 1.6&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=FLC:CITRATE+ANION'>FLC</scene>, <scene name='pdbligand=U3S:1-(5-DEOXY-5-PIPERIDIN-1-YL-ALPHA-L-ARABINOFURANOSYL)PYRIMIDINE-2,4(1H,3H)-DIONE'>U3S</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=3d6q FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3d6q OCA], [https://pdbe.org/3d6q PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3d6q RCSB], [https://www.ebi.ac.uk/pdbsum/3d6q PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3d6q ProSAT]</span></td></tr>
</table>
== 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> 
== Evolutionary Conservation ==
[[Image:Consurf_key_small.gif|200px|right]]
Check<jmol>
  <jmolCheckbox>
    <scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/d6/3d6q_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.spt</scriptWhenUnchecked>
    <text>to colour the structure by Evolutionary Conservation</text>
  </jmolCheckbox>
</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=3d6q ConSurf].
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== Publication Abstract from PubMed ==
Six 5'-deoxy-5'-morpholine, piperidine, and pyrrolidine of pyrimidine nucleosides have been synthesized and characterized. Their inhibitory action to ribonuclease A has been studied by biochemical analysis and X-ray crystallography. These compounds are moderate inhibitors of RNase A with mid-to-upper micromolar inhibition constants (K(i)). The high resolution X-ray crystal structures of the RNase A-inhibitor complexes have shown that all inhibitors bind at the enzyme catalytic cleft with the pyrimidine nucleobase at the B(1)R(2) subsites while the 5' group binds away from the main subsite P(1), where P-O(5') bond cleavage occurs, toward the solvent close to subsite P(0). Structure-activity relationship analysis has demonstrated that the compounds with the larger group in the 5' position are more potent. Comparative structural analysis of these RNase A complexes with other similar RNase A-ligand complexes provides a structural explanation of their potency and suggests ways to improve their efficiency and selectivity. These inhibitors can be the starting point for the development of compounds that can be used as pharmaceuticals against pathologies associated with RNase A homologues such as human angiogenin, which is implicated in tumor induced neovascularization.

Morpholino, Piperidino, and Pyrrolidino Derivatives of Pyrimidine Nucleosides as Inhibitors of Ribonuclease A: Synthesis, Biochemical, and Crystallographic Evaluation (#) (,) (dagger).,Samanta A, Leonidas DD, Dasgupta S, Pathak T, Zographos SE, Oikonomakos NG J Med Chem. 2009 Jan 27. PMID:19173562<ref>PMID:19173562</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
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<div class="pdbe-citations 3d6q" style="background-color:#fffaf0;"></div>

==See Also==
*[[Ribonuclease 3D structures|Ribonuclease 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Bos taurus]]
[[Category: Large Structures]]
[[Category: Leonidas DD]]
[[Category: Oikonomakos NG]]
[[Category: Zographos SE]]