4gw2
From Proteopedia
(Difference between revisions)
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== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[4gw2]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Limulus_polyphemus Limulus polyphemus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4GW2 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4GW2 FirstGlance]. <br> | <table><tr><td colspan='2'>[[4gw2]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Limulus_polyphemus Limulus polyphemus]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=4GW2 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=4GW2 FirstGlance]. <br> | ||
| - | </td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NO3:NITRATE+ION'>NO3</scene>, <scene name='pdbligand=ORN:L-ORNITHINE'>ORN</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]] 2.157Å</td></tr> |
| + | <tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=ADP:ADENOSINE-5-DIPHOSPHATE'>ADP</scene>, <scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=NO3:NITRATE+ION'>NO3</scene>, <scene name='pdbligand=ORN:L-ORNITHINE'>ORN</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=4gw2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4gw2 OCA], [https://pdbe.org/4gw2 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4gw2 RCSB], [https://www.ebi.ac.uk/pdbsum/4gw2 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4gw2 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=4gw2 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=4gw2 OCA], [https://pdbe.org/4gw2 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=4gw2 RCSB], [https://www.ebi.ac.uk/pdbsum/4gw2 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=4gw2 ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[https://www.uniprot.org/uniprot/KARG_LIMPO KARG_LIMPO] | [https://www.uniprot.org/uniprot/KARG_LIMPO KARG_LIMPO] | ||
| - | <div style="background-color:#fffaf0;"> | ||
| - | == Publication Abstract from PubMed == | ||
| - | Arginine kinase catalyzes the reversible transfer of a phosphoryl group between ATP and l-arginine and is a monomeric homolog of the human enzyme creatine kinase. Arginine and creatine kinases belongs to the phosphagen kinase family of enzymes, which consists of eight known members, each of which is specific for its own phosphagen. Here, the source of phosphagen specificity in arginine kinase is investigated through the use of phosphagen analogs. Crystal structures have been determined for Limulus polyphemus arginine kinase with one of four arginine analogs bound in a transition state analog complex: l-ornithine, l-citrulline, imino-l-ornithine, and d-arginine. In all complexes, the enzyme achieves a closed conformation very similar to that of the cognate transition state analog complex, but differences are observed in the configurations of bound ligands. Arginine kinase exhibits no detectable activity towards ornithine, citrulline, or imino-l-ornithine, and only trace activity towards d-arginine. The crystal structures presented here demonstrate that phosphagen specificity is derived neither from a lock-and-key mechanism nor a modulation of induced-fit conformational changes, but potentially from subtle distortions in bound substrate configurations. | ||
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| - | Crystal structures of arginine kinase in complex with ADP, nitrate, and various phosphagen analogs.,Clark SA, Davulcu O, Chapman MS Biochem Biophys Res Commun. 2012 Sep 17. pii: S0006-291X(12)01793-7. doi:, 10.1016/j.bbrc.2012.09.053. PMID:22995310<ref>PMID:22995310</ref> | ||
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| - | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| - | </div> | ||
| - | <div class="pdbe-citations 4gw2" style="background-color:#fffaf0;"></div> | ||
==See Also== | ==See Also== | ||
*[[Arginine kinase 3D structures|Arginine kinase 3D structures]] | *[[Arginine kinase 3D structures|Arginine kinase 3D structures]] | ||
| - | == References == | ||
| - | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
Current revision
Crystal structure of arginine kinase in complex with L-ornithine, MgADP, and nitrate.
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