label: an N(2)-(ADP-L-ribosyl)-2'-deoxyguanosine in DNA + nicotinamide + H(+) => a 2'-deoxyguanosine in DNA + NAD(+)
label_lc: an n(2)-(adp-l-ribosyl)-2'-deoxyguanosine in dna + nicotinamide + h(+) => a 2'-deoxyguanosine in dna + nad(+)