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