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ligase

   Also found in: Dictionary/thesaurus, Acronyms, Encyclopedia, Wikipedia 0.01 sec.
ligase /li·gase/ (li´gās) (lig´ās) any of a class of enzymes that catalyze the joining together of two molecules coupled with the breakdown of a pyrophosphate bond in ATP or a similar triphosphate.
li·gase (lgs, -gz)
n.
Any of a class of enzymes, including the carboxylases, that catalyze the linkage of two molecules, generally utilizing ATP as the energy donor. Also called synthetase.

ligase [li´gās, lig´ās]
any of a class of enzymes that catalyze the joining together of two molecules coupled with the breakdown of a pyrophosphate bond in ATP or a similar triphosphate.
DNA ligase either of two enzymes that join two double-helical molecules of DNA together to make a longer DNA molecule.
ligase chain reaction a type of DNA amplification that uses DNA ligase to link chains and amplify the template containing the sequence in question.

ligase
an enzyme that repairs single-strand nicks in duplex DNA and covalently joins DNA fragments with complementary, overlapping (called also cohesive or sticky) ends or less efficiently, with blunt ends. Bacteriophage T4 ligase catalyzes the formation of a covalent phosphodiester bond between adjacent 5′-phosphate and 3′-hydroxyl groups in duplex DNA.

ligase chain reaction
a technique for detecting a specific nucleotide pair in a gene. Called also LCR.


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We have also observed stable interaction between NEIL2 and other BER proteins DNA polymerase beta (Pol beta), DNA ligase IIIalpha (Lig IIIalpha) and XRCC1.
It forms repair complexes with poly(ADP-ribose) polymerase (22, 23), DNA polymerase- (24, 25), DNA ligase III (26), human apurinic/apyrimidinic endonuclease (27), and proliferating cell nuclear antigen at DNA replication foci to facilitate SSB repair during S phase (28).
To discern the potential mechanisms underlying this differential loss, the levels and the activities of gamma-glutamylcysteine ligase (GCL) and cysteine availability were determined.
 
 
 
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