a 5'-end 5'-phospho-2'-deoxyribonucleotide in single-stranded DNA + H2O => a 5'-end 5'-dephospho-2'-deoxyribonucleotide in single-stranded DNA + phosphate
a 5'-end 5'-phospho-2'-deoxyribonucleotide in single-stranded dna + h2o => a 5'-end 5'-dephospho-2'-deoxyribonucleotide in single-stranded dna + phosphate