6RQ3 image
Entry Detail
PDB ID:
6RQ3
Keywords:
Title:
CYP121 in complex with 2,6-dimethyl dicyclotyrosine
Biological Source:
Host Organism:
PDB Version:
Deposition Date:
2019-05-15
Release Date:
2020-04-22
Method Details:
Experimental Method:
Resolution:
1.50 Å
R-Value Free:
0.19
R-Value Work:
0.18
R-Value Observed:
0.18
Space Group:
P 65 2 2
Macromolecular Entities
Polymer Type:polypeptide(L)
Description:Mycocyclosin synthase
Chain IDs:A
Chain Length:396
Number of Molecules:1
Biological Source:Mycobacterium tuberculosis
Primary Citation
Structure-Activity Relationships of cyclo (l-Tyrosyl-l-tyrosine) Derivatives Binding to Mycobacterium tuberculosis CYP121: Iodinated Analogues Promote Shift to High-Spin Adduct.
J.Med.Chem. 62 9792 9805 (2019)
PMID: 31618032 DOI: 10.1021/acs.jmedchem.9b01199

Abstact

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-μM binding affinity for the CYP121 enzyme and a complete shift to the high-spin state of the heme FeIII. 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.

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Primary Citation of related structures