Publication: Metalloantibiotic Mn(II)-bacitracin complex mimicking manganese superoxide dismutase
Issued Date
2006-03-24
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ISSN
0006291X
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2-s2.0-32344435147
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Mahidol University
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SCOPUS
Bibliographic Citation
Biochemical and Biophysical Research Communications. Vol.341, No.4 (2006), 925-930
Suggested Citation
Theeraphon Piacham, Chartchalerm Isarankura-Na-Ayudhya, Chanin Nantasenamat, Sakda Yainoy, Lei Ye, Leif Bülow, Virapong Prachayasittikul Metalloantibiotic Mn(II)-bacitracin complex mimicking manganese superoxide dismutase. Biochemical and Biophysical Research Communications. Vol.341, No.4 (2006), 925-930. doi:10.1016/j.bbrc.2006.01.045 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/23062
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Title
Metalloantibiotic Mn(II)-bacitracin complex mimicking manganese superoxide dismutase
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Abstract
Superoxide dismutase (SOD) activities of various metallobacitracin complexes were evaluated using the riboflavin-methionine-nitro blue tetrazolium assay. The radical scavenging activity of various metallobacitracin complexes was shown to be higher than those of the negative controls, e.g., free transition metal ions and metal-free bacitracin. The SOD activity of the complex was found to be in the order of Mn(II) > Cu(II) > Co(II) > Ni(II). Furthermore, the effect of bacitracin and their complexation to metals on various microorganisms was assessed by antibiotic susceptibility testing. Moreover, molecular modeling and quantum chemical calculation of the metallobacitracin complex was performed to evaluate the correlation of electrostatic charge of transition metal ions on the SOD activity. © 2006 Elsevier Inc. All rights reserved.