6c3c: Difference between revisions
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==PLP-dependent L-arginine hydroxylase RohP quinonoid I complex== | |||
<StructureSection load='6c3c' size='340' side='right' caption='[[6c3c]], [[Resolution|resolution]] 1.50Å' scene=''> | |||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[6c3c]] is a 2 chain structure. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6C3C OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=6C3C FirstGlance]. <br> | |||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=EDO:1,2-ETHANEDIOL'>EDO</scene>, <scene name='pdbligand=EJ1:(2E)-5-carbamimidamido-2-{[(Z)-{3-hydroxy-2-methyl-5-[(phosphonooxy)methyl]pyridin-4(1H)-ylidene}methyl]imino}pentanoic+acid'>EJ1</scene>, <scene name='pdbligand=PEG:DI(HYDROXYETHYL)ETHER'>PEG</scene></td></tr> | |||
<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=6c3c FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6c3c OCA], [http://pdbe.org/6c3c PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=6c3c RCSB], [http://www.ebi.ac.uk/pdbsum/6c3c PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=6c3c ProSAT]</span></td></tr> | |||
</table> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
Enzymes that catalyze hydroxylation of unactivated carbons normally contain heme and nonheme iron cofactors. By contrast, how a pyridoxal phosphate (PLP)-dependent enzyme could catalyze such a hydroxylation was unknown. Here, we investigate RohP, a PLP-dependent enzyme that converts l-arginine to (S)-4-hydroxy-2-ketoarginine. We determine that the RohP reaction consumes oxygen with stoichiometric release of H2O2. To understand this unusual chemistry, we obtain approximately 1.5 A resolution structures that capture intermediates along the catalytic cycle. Our data suggest that RohP carries out a four-electron oxidation and a stereospecific alkene hydration to give the (S)-configured product. Together with our earlier studies on an O2, PLP-dependent l-arginine oxidase, our work suggests that there is a shared pathway leading to both oxidized and hydroxylated products from l-arginine. | |||
Snapshots of the Catalytic Cycle of an O2, Pyridoxal Phosphate-Dependent Hydroxylase.,Hedges JB, Kuatsjah E, Du YL, Eltis LD, Ryan KS ACS Chem Biol. 2018 Feb 28. doi: 10.1021/acschembio.8b00039. PMID:29466666<ref>PMID:29466666</ref> | |||
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
[[Category: | </div> | ||
<div class="pdbe-citations 6c3c" style="background-color:#fffaf0;"></div> | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: Hedges, J B]] | |||
[[Category: Ryan, K S]] | |||
[[Category: Biosynthetic protein]] | |||
[[Category: O2-]] | |||
[[Category: Plp-dependent hydroxylase]] | |||
Revision as of 05:07, 8 March 2018
PLP-dependent L-arginine hydroxylase RohP quinonoid I complex
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