Abstract:
:Pierisin-2 is a cytotoxic and apoptosis-inducing protein present in Pieris brassicae with a 91% homology in the deduced amino acid sequences to pierisin-1 from Pieris rapae. We earlier showed pierisin-1 to catalyze mono(ADP-ribosyl)ation of 2'-deoxyguanosine (dG) in DNA to form N2-(ADP-ribos-1-yl)-2'-deoxyguanosine, this DNA modification appearing linked to its cytotoxicity and ability to induce apoptosis in mammalian cell lines. In this paper, we documented evidence that pierisin-2 also catalyzed ADP-ribosylation of dG in DNA to give the same reaction product as demonstrated for pierisin-1, with similar efficiency. With oligonucleotides as substrates, ADP-ribosylation by pierisin-2 was suggested to occur by one-side attack of the carbon atom at 1 position of the ribose moiety in NAD toward N2 of dG. The presence of a unique ADP-ribosylation toxin targeting dG in DNA in two distinct species in a Pieris genus could be a quite important finding to better understand biological functions of pierisin-1 and -2 in Pieris butterflies and the generic evolution of these cabbage butterflies.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Takamura-Enya T,Watanabe M,Koyama K,Sugimura T,Wakabayashi Kdoi
10.1016/j.bbrc.2004.08.132subject
Has Abstractpub_date
2004-10-15 00:00:00pages
579-82issue
2eissn
0006-291Xissn
1090-2104pii
S0006-291X(04)01881-9journal_volume
323pub_type
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