Exodeoxyribonuclease I (EC 3.1.11.1, Escherichia coli exonuclease I, E. coli exonuclease I, exonuclease I) is an enzyme. This enzyme catalyses the following chemical reaction: Exodeoxyribonuclease I (EC 3.1.11.1, Escherichia coli exonuclease I, E. coli exonuclease I, exonuclease I) is an enzyme. This enzyme catalyses the following chemical reaction: Preference for single-stranded DNA. The Escherichia coli enzyme hydrolyses glucosylated DNA.Punjabi