The 3′‐5′ exonuclease of DNA polymerase I of Escherichia coli: contribution of each amino acid at the active site to the reaction.
Derbyshire V, Grindley N, Joyce C. The 3′‐5′ exonuclease of DNA polymerase I of Escherichia coli: contribution of each amino acid at the active site to the reaction. The EMBO Journal 1991, 10: 17-24. PMID: 1989882, PMCID: PMC452606, DOI: 10.1002/j.1460-2075.1991.tb07916.x.Peer-Reviewed Original ResearchConceptsActive siteMetal ionsEnzyme-bound metal ionSide chainsExonuclease reactionDivalent metal ionsAmino acid side chainsCarboxylate side chainAcid side chainsHydroxide ionMetal ligandsNucleophilic attackIonsTerminal phosphodiester bondPhosphodiester bondReactionExonuclease active siteActivity resultsKlenow fragmentDuplex DNA substratesCatalysisChainCarboxylateTerminal baseSubstrate