Model of the Interactions of Calichemicin Gamma 1 with a DNA Fragment from PBR322
Overview
Authors
Affiliations
An analysis of the binding interactions of several DNA-drug complexes that utilize carbohydrates for DNA recognition has been undertaken. It is proposed that the carbohydrate residues function as general minor groove binding elements, and the stereochemistry of aglycone attachment sites is generally disposed to promote a right-handed helical geometry that is complementary to right-handed DNA. The constitution and stereochemistry of the DNA double-strand cleaving agent calichemicin gamma 1 is consistent with this analysis. Docking experiments with computer-generated models of this drug and a dodecamer duplex that was found to serve as a calichemicin cleavage site were performed to gain insight into the origin of the drug's sequence-selective binding and cutting properties. A model is presented that provides a molecular level understanding of the double-strand cleavage patterns that result from the action of calichemicin gamma 1 on DNA.
Krieg S, Roderburg C, Krieg A, Luedde T, Loosen S, Kostev K J Cancer Res Clin Oncol. 2022; 149(8):4275-4282.
PMID: 36066621 PMC: 10349780. DOI: 10.1007/s00432-022-04335-0.
Pottiboyina V, Kumar A, Sevilla M J Phys Chem B. 2011; 115(50):15090-7.
PMID: 22050209 PMC: 3240691. DOI: 10.1021/jp207873a.
Evaluation of flavonoids binding to DNA duplexes by electrospray ionization mass spectrometry.
Wang Z, Cui M, Song F, Lu L, Liu Z, Liu S J Am Soc Mass Spectrom. 2008; 19(7):914-22.
PMID: 18467117 DOI: 10.1016/j.jasms.2008.04.018.
Interaction of calicheamicin gamma1(I) and its related carbohydrates with DNA-protein complexes.
Sissi C, Aiyar J, Boyer S, Depew K, Danishefsky S, Crothers D Proc Natl Acad Sci U S A. 1999; 96(19):10643-8.
PMID: 10485879 PMC: 17936. DOI: 10.1073/pnas.96.19.10643.
Zeman S, Depew K, Danishefsky S, Crothers D Proc Natl Acad Sci U S A. 1998; 95(8):4327-32.
PMID: 9539736 PMC: 22488. DOI: 10.1073/pnas.95.8.4327.