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T4 RNA Ligase I (gp63) catalyzes the ATP-dependent ligation of single-stranded nucleic acids by joining a 5′ phosphate to a 3′ hydroxyl. It is most efficient at ligating the 3′-OH of RNA to the 5′-phosphate of RNA or DNA in single-stranded contexts.
T4 DNA Ligase is used for cloning of restriction enzyme generated DNA fragments and PCR products. It is also used for next-generation library preparation, joining linkers and adapters to cohesive or blunt-ended DNA, self-circularization of linear DNA.
T7 DNA Ligase is an ATP-dependent enzyme from bacteriophage T7 that catalyzes phosphodiester bond formation between 5′ phosphate and 3′ hydroxyl termini of duplex DNA.
TAB5 Alkaline Phosphatase is a heat labile alkaline phosphatase. It catalyzes the dephosphorylation of phosphomonoesters at both 5' and 3' ends of DNA and RNA molecules in a nonspecific manner. Additionally, it eliminates phosphate groups from the 5' and 3' positions of DNA, RNA, and dNTPs.
T4 RNA Ligase II (gp24.1) repairs nicks in dsRNA and can also be used to ligate the 3' terminal OH of RNA to the 5'-terminal phosphate of DNA in a double-stranded structure.
Klenow fragment (Exo-) is a mesophilic DNA polymerase deficient in both proofreading (3′→5′) and nick-translation (5′→3′) nuclease activities, with a moderate strand displacement activity during DNA synthesis.