DNA ligase (ATP) EC#: 6.5.1.1; ChemWhat Code: 1383888

Product Name DNA ligase (ATP)
Example Structure Example Structure of DNA ligase (ATP) EC#: 6.5.1.1
Synonyms adenosine triphosphate-dependent ligase, ADL, APE1094, ApeLig, ATP-dependent DNA ligase, ATP-dependent DNA ligase 1, ATP-dependent DNA ligase I, ATP-dependent ligase, ATP-dependent ligase LigB, ATP-dependent ligase LigC, ATP-dependent ligase LigD, ATP-type DNA repair ligase, AtuLigD1, AtuLigD2, b-ADL, bacterial ATP-dependent DNA ligase, Cdc9, ChVLig, CVLig, Deoxyribonucleate ligase, Deoxyribonucleic acid joinase, Deoxyribonucleic acid ligase, Deoxyribonucleic acid repair enzyme, Deoxyribonucleic acid-joining enzyme, Deoxyribonucleic joinase, Deoxyribonucleic ligase, Deoxyribonucleic repair enzyme, Deoxyribonucleic-joining enzyme, DNA joinase, DNA ligase, DNA ligase 1, DNA ligase 4, DNA ligase D, DNA ligase I, DNA ligase II, DNA ligase III, DNA ligase IIIalpha, DNA ligase IV, DNA ligase IV homolog, DNA ligase IV-XRCC4 complex, DNA ligase IV/XRCC4 complex, DNA ligase IV/XRCC4/XLF complex, DNA ligase V, DNA ligase VI, DNA repair enzyme, DNA repair ligase D, DNA-joining enzyme, DNAligI, Dnl4, drB0100, Hbu DNA ligase, L3BRCT, LdMNPV DNA ligase, Lig, Lig E, Lig I, Lig III, LIG k alpha, Lig K protein, Lig(Tk), LIG1, Lig3, Lig3alpha, Lig4, LIG6, LigA, ligase 1, ligase D, ligase III, ligase III-alpha, LigB, LigC, LigC1, LigD, LigI, LigIII, LigTh1519, ligTK, MJ0171, MSH-1, Mt-Lig, Mth ligase, MtuLigB, MtuLigC, MtuLigD, NHEJ DNA repair ligase, PabDBD, PaeLigD, PBCV-1 DNA ligase, PF1635, PfLigI, Pfu DNA ligase, PfuLig, Polydeoxyribonucleotide synthase (ATP), Polydeoxyribonucleotide synthase [ATP], Polynucleotide ligase, Sealase, ssLig, SSO0189, T4 ATP ligase, T4 DNA ligase, T4 lig, Vaccinia ligase, Vib-Lig, X4L4, XRCC1/DNA ligase III, XRCC4-DNA ligase IV complex
EC Number 6.5.1.1
CAS Registry Number 9015-85-4
Comments The enzyme catalyses the ligation of DNA strands with 3′-hydroxyl and 5′-phosphate termini, forming a phosphodiester and sealing certain types of single-strand breaks in duplex DNA. Catalysis occurs by a three-step mechanism, starting with the activation of the enzyme by ATP, forming a phosphoramide bond between adenylate and a lysine residue. The adenylate group is then transferred to the 5′-phosphate terminus of the substrate, forming the capped structure 5′-(5′-diphosphoadenosine)-[DNA]. Finally, the enzyme catalyses a nucleophilic attack of the 3′-OH terminus on the capped terminus, which results in formation of the phosphodiester bond and release of the adenylate. RNA can also act as substrate, to some extent.?cf. EC?6.5.1.2, DNA ligase (NAD+), EC?6.5.1.6, DNA ligase (ATP or NAD+), and EC?6.5.1.7, DNA ligase (ATP, ADP or GTP).
Cofactor
History
Reactions Atp + (deoxyribonucleotide)(n)-3′-hydroxyl + 5′-phospho- (deoxyribonucleotide)(m) = (deoxyribonucleotide)(n+m) + Amp + diphosphate.

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