4rsg: Difference between revisions

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== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[4rsg]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4RSG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4RSG FirstGlance]. <br>
<table><tr><td colspan='2'>[[4rsg]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Homo_sapiens Homo sapiens]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4RSG OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4RSG FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DOD:DEUTERATED+WATER'>DOD</scene>, <scene name='pdbligand=GNP:PHOSPHOAMINOPHOSPHONIC+ACID-GUANYLATE+ESTER'>GNP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">Neutron Diffraction, [[Resolution|Resolution]] 1.907&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=DOD:DEUTERATED+WATER'>DOD</scene>, <scene name='pdbligand=GNP:PHOSPHOAMINOPHOSPHONIC+ACID-GUANYLATE+ESTER'>GNP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</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=4rsg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4rsg OCA], [https://pdbe.org/4rsg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4rsg RCSB], [https://www.ebi.ac.uk/pdbsum/4rsg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4rsg 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=4rsg FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4rsg OCA], [https://pdbe.org/4rsg PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4rsg RCSB], [https://www.ebi.ac.uk/pdbsum/4rsg PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4rsg ProSAT]</span></td></tr>
</table>
</table>
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== Function ==
== Function ==
[https://www.uniprot.org/uniprot/RASH_HUMAN RASH_HUMAN] Ras proteins bind GDP/GTP and possess intrinsic GTPase activity.<ref>PMID:14500341</ref> <ref>PMID:9020151</ref> <ref>PMID:12740440</ref>  
[https://www.uniprot.org/uniprot/RASH_HUMAN RASH_HUMAN] Ras proteins bind GDP/GTP and possess intrinsic GTPase activity.<ref>PMID:14500341</ref> <ref>PMID:9020151</ref> <ref>PMID:12740440</ref>  
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== Publication Abstract from PubMed ==
RAS GTPase is a prototype for nucleotide-binding proteins that function by cycling between GTP and GDP, with hydrogen atoms playing an important role in the GTP hydrolysis mechanism. It is one of the most well studied proteins in the superfamily of small GTPases, which has representatives in a wide range of cellular functions. These proteins share a GTP binding pocket with highly conserved motifs that promote hydrolysis to GDP. The neutron crystal structure of RAS presented here strongly supports a protonated gamma-phosphate at physiological pH. This counters the notion that the phosphate groups of GTP are fully deprotonated at the start of the hydrolysis reaction, which has colored the interpretation of experimental and computational data in studies of the hydrolysis mechanism. The neutron crystal structure presented here puts in question our understanding of the pre-catalytic state associated with the hydrolysis reaction central to the function of RAS and other GTPases.
Neutron Crystal Structure of RAS GTPase puts in question the Protonation State of the GTP gamma-Phosphate.,Knihtila R, Holzapfel G, Weiss K, Meilleur F, Mattos C J Biol Chem. 2015 Oct 29. pii: jbc.M115.679860. PMID:26515069<ref>PMID:26515069</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 4rsg" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA