The most commonly used DNA ligase in these applications is the ATP-dependent enzyme from bacteriophage T4, which was also one of the first to be discovered (Weiss and Richardson, 1967). What is the main function of DNA ligase in DNA replication? You should now know that DNA ligase is anRead More →

The leading strand only needs one primer set by primase to begin replication. The lagging strand need several primers to replicate as it continues replicating. Is ligase needed for DNA replication? DNA ligases are critical enzymes of DNA metabolism. The reaction they catalyse (the joining of nicked DNA) is requiredRead More →

DNA joining enzymes (ligases) are enzymes that catalyze the synthesis of phosphodiester bonds in duplex DNA, coupled to the cleavage of the pyrophosphate bond of adenosine triphosphate (ATP). … coli enzyme, and the T4-induced ligase has been assayed by an ATP- pyrophosphate exchange reaction. What does ligase join together? InRead More →

DNA ligases are enzymes that can form a phosphodiester bond at a single-strand break in DNA, a reaction between a 3′-OH group and a 5′-monophosphate. How many types of ligase are there? Ligases are classified into six subclasses: (1) EC 6.1 (ligases forming carbon-oxygen bonds), (2) EC 6.2 (ligases formingRead More →