View source for 6rqd


==CYP121 in complex with 3-chloro dicyclotyrosine==
<StructureSection load='6rqd' size='340' side='right'caption='[[6rqd]], [[Resolution|resolution]] 1.50&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6RQD OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6RQD 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]] 1.499&#8491;</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=HEM:PROTOPORPHYRIN+IX+CONTAINING+FE'>HEM</scene>, <scene name='pdbligand=KEW:(3~{S},6~{S})-3-[(3-chloranyl-4-oxidanyl-phenyl)methyl]-6-[(4-hydroxyphenyl)methyl]piperazine-2,5-dione'>KEW</scene>, <scene name='pdbligand=SO4:SULFATE+ION'>SO4</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=6rqd FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6rqd OCA], [https://pdbe.org/6rqd PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6rqd RCSB], [https://www.ebi.ac.uk/pdbsum/6rqd PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6rqd ProSAT]</span></td></tr>
</table>
<div style="background-color:#fffaf0;">
== Publication Abstract from PubMed ==
A series of analogues of cyclo(l-tyrosyl-l-tyrosine), the substrate of the Mycobacterium tuberculosis enzyme CYP121, have been synthesized and analyzed by UV-vis and electron paramagnetic resonance spectroscopy and by X-ray crystallography. The introduction of iodine substituents onto cyclo(l-tyrosyl-l-tyrosine) results in sub-muM binding affinity for the CYP121 enzyme and a complete shift to the high-spin state of the heme Fe(III). The introduction of halogens that are able to interact with heme groups is thus a feasible approach to the development of next-generation, tight binding inhibitors of the CYP121 enzyme, in the search for novel antitubercular compounds.

Structure-Activity Relationships of cyclo(l-Tyrosyl-l-tyrosine) Derivatives Binding to Mycobacterium tuberculosis CYP121: Iodinated Analogues Promote Shift to High-Spin Adduct.,Rajput S, McLean KJ, Poddar H, Selvam IR, Nagalingam G, Triccas JA, Levy CW, Munro AW, Hutton CA J Med Chem. 2019 Nov 14;62(21):9792-9805. doi: 10.1021/acs.jmedchem.9b01199. Epub, 2019 Oct 31. PMID:31618032<ref>PMID:31618032</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6rqd" style="background-color:#fffaf0;"></div>

==See Also==
*[[Cytochrome P450 3D structures|Cytochrome P450 3D structures]]
== References ==
<references/>
__TOC__
</StructureSection>
[[Category: Large Structures]]
[[Category: Levy C]]
[[Category: Poddar H]]