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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)
 
 
 
 
 

Structure and partial amino acid sequence of calf thymus DNA topoisomerase II: comparison with other type II enzymes.

The partial amino acid sequence of p140 calf thymus DNA topoisomerase II was determined by analysis of cyanogen bromide peptides. Five peptides were aligned and shared extensive homology with sequences derived from cDNA clones for the human topoisomerase II isoenzyme forms. Less homology was seen with the Drosophila, yeast and bacterial type II enzymes. Calf and human enzymes shared epitopes allowing isolation of a cDNA clone to human topoisomerase II isoenzyme alpha. Our results indicate that calf thymus p140 topoisomerase II is an active N-terminal proteolytic fragment of the native p180 enzyme and demonstrate that mammalian type II enzymes exhibit close sequence similarity.[1]

References

  1. Structure and partial amino acid sequence of calf thymus DNA topoisomerase II: comparison with other type II enzymes. Austin, C.A., Barot, H.A., Margerrison, E.E., Turcatti, G., Wingfield, P., Hayes, M.V., Fisher, L.M. Biochem. Biophys. Res. Commun. (1990) [Pubmed]
 
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