2yoh

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Plasmodium falciparum thymidylate kinase in complex with a urea-alpha- deoxythymidine inhibitorPlasmodium falciparum thymidylate kinase in complex with a urea-alpha- deoxythymidine inhibitor

Structural highlights

2yoh is a 2 chain structure with sequence from Plasmodium falciparum 3D7. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:X-ray diffraction, Resolution 1.6Å
Ligands:
Resources:FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

KTHY_PLAF7 Catalyzes the phosphorylation of thymidine monophosphate (dTMP) to thymidine diphosphate (dTDP), the immediate precursor for the DNA building block dTTP (PubMed:18477629, PubMed:19126267, PubMed:31934749, PubMed:20353400). Can also phosphorylate dGMP and to a lesser extent GMP, dUMP and dIMP (PubMed:18477629, PubMed:19126267, PubMed:31934749, PubMed:20353400). Can use either ATP or dATP as phosphate donors in presence of Mg(2+) (PubMed:18477629).[1] [2] [3] [4]

Publication Abstract from PubMed

Plasmodium falciparum thymidylate kinase (PfTMPK) is a key enzyme in pyrimidine nucleotide biosynthesis. 3-Trifluoromethyl-4-chloro-phenyl-urea-alpha-thymidine has been reported as an inhibitor of Mycobacterium tuberculosis TMPK (MtTMPK). Starting from this point, we designed, synthesized and evaluated a number of thymidine analogues as antimalarials. Both 5'-urea-alpha- and beta-thymidine derivatives were moderate inhibitors of PfTMPK and furthermore showed moderate inhibition of parasite growth. The structure of several enzyme-inhibitor complexes provides a basis for improved inhibitor design. However, we found that certain 5'-urea-alpha-thymidine analogues had antimalarial activity where inhibition of PfTMPK is not the major mode of action. Optimization of this series resulted in a compound with potent antimalarial activity (EC(50) = 28 nM; CC(50) = 29 muM).

Synthesis and evaluation of alpha-thymidine analogues as novel antimalarials.,Cui H, Carrero-Lerida J, Silva AP, Whittingham JL, Brannigan JA, Ruiz-Perez LM, Read KD, Wilson KS, Gonzalez-Pacanowska D, Gilbert IH J Med Chem. 2012 Dec 27;55(24):10948-57. doi: 10.1021/jm301328h. Epub 2012 Dec, 14. PMID:23240776[5]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

See Also

References

  1. ↑ Kandeel M, Kitade Y. Molecular characterization, heterologous expression and kinetic analysis of recombinant Plasmodium falciparum thymidylate kinase. J Biochem. 2008 Aug;144(2):245-50. PMID:18477629 doi:10.1093/jb/mvn062
  2. ↑ Kandeel M, Ando T, Kitamura Y, Abdel-Aziz M, Kitade Y. Mutational, inhibitory and microcalorimetric analyses of Plasmodium falciparum TMP kinase. Implications for drug discovery. Parasitology. 2009 Jan;136(1):11-25. PMID:19126267 doi:10.1017/S0031182008005301
  3. ↑ Whittingham JL, Carrero-Lerida J, Brannigan JA, Ruiz-Perez LM, Silva AP, Fogg MJ, Wilkinson AJ, Gilbert IH, Wilson KS, Gonzalez-Pacanowska D. Structural basis for the efficient phosphorylation of AZT-MP (3'-azido-3'-deoxythymidine monophosphate) and dGMP by Plasmodium falciparum type I thymidylate kinase. Biochem J. 2010 May 27;428(3):499-509. PMID:20353400 doi:10.1042/BJ20091880
  4. ↑ Chen MD, Fucci IJ, Sinha K, Rule GS. dGMP Binding to Thymidylate Kinase from Plasmodium falciparum Shows Half-Site Binding and Induces Protein Dynamics at the Dimer Interface. Biochemistry. 2020 Feb 11;59(5):694-703. PMID:31934749 doi:10.1021/acs.biochem.9b00898
  5. ↑ Cui H, Carrero-Lerida J, Silva AP, Whittingham JL, Brannigan JA, Ruiz-Perez LM, Read KD, Wilson KS, Gonzalez-Pacanowska D, Gilbert IH. Synthesis and evaluation of alpha-thymidine analogues as novel antimalarials. J Med Chem. 2012 Dec 27;55(24):10948-57. doi: 10.1021/jm301328h. Epub 2012 Dec, 14. PMID:23240776 doi:10.1021/jm301328h

2yoh, resolution 1.60Å

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