Apurinic-apyrimidinic DNA-endonuclease activity of cytochrome c and pancreatic RNAse

Kaboev, O.K.; Luchkina, L.A.; Bekker, M.L.

Biokhimiia 51(1): 146-149

1986


ISSN/ISBN: 0320-9725
PMID: 2420374
Document Number: 283474
Cationic proteins--cytochrome c and pancreatic RNAase--possess the apurinic-apyrimidinic DNA-endonuclease activity. The affinity of these proteins for DNA-apurinic sites does not differ from that of specific apurinic DNA-endonucleases described in literature. The main features of the apurinic activity of cationic proteins are as follows: low specific activity, high temperature optimum of the reaction, absence of primer-stimulated activity. The feasibility of participation of cationic proteins and some other nucleophilic compounds in single-stranded breaks production in apurinic DNA is discussed.

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