A spectroscopic investigation of the metal binding site of bleomycin A2. The Cu(II) and Zn(II) derivatives.
Biochim Biophys Acta, 1978/2/16;517(2):517-26.
Dabrowiak JC, Greenaway FT, Longo WE, Van Husen M, Crooke ST
PMID: 75023
Abstract
Using a combination of ultraviolet-visible absorption, 1H NMR and ESR techniques we have established that N(1) of the imidazole and N(1) of the pyrimidine residues of bleomycin A2 bind to Cu(II) and Zn(II). The observations coupled with the earlier results that the alpha-amino group of the alpha-amino carboxamide function and the carbamoyl moiety are also Cu(II)-ligating groups makes it possible to reconstruct the detailed geometry and stereochemistry of the metal binding site of bleomycin A2.
MeSH terms
Binding Sites; Bleomycin; Copper; Electron Spin Resonance Spectroscopy; Magnetic Resonance Spectroscopy; Spectrophotometry; Spectrophotometry, Ultraviolet; Zinc
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