T4 Polynucleotide Kinase is a 5'-hydroxyl kinase for polyribonucleotides, capable of catalyzing the transfer of the γ-phosphate group from ATP to the 5'-hydroxyl terminus of oligonucleotide chains (double-stranded or single-stranded DNA or RNA) and to 3'-monophosphate nucleotides. This reaction is reversible. T4 Polynucleotide Kinase also possesses 3'-phosphatase activity, hydrolyzing 3'-phosphate groups from the 3'-phosphate terminus of oligonucleotides, deoxy-3'-monophosphate nucleotides, and deoxy-3'-diphosphate nucleotides. In the presence of ADP, T4 PNK exhibits 5'-phosphatase activity, catalyzing the exchange of 5'-phosphate groups between 5'-P-oligo/polyribonucleotides and ATP. It is suitable for DNA library construction and probe labeling. Compared to T4 Polynucleotide Kinase (Cat#12902ES), UCF.METMT4 Polynucleotide Kinase has lower host residue, making it suitable for applications that require stricter background control, such as pathogen detection. Applications Phosphorylation of the 5' terminus of DNA or RNA for ligation reactions. End labeling of DNA or RNA for probe preparation and DNA sequencing. Phosphorylation of the 5' terminus of mononucleotides that already have a 3'-phosphate group to prepare pNp substrates for addition to the 3' end of DNA or RNA. Labeling of the 5' terminus of oligonucleotides that have a 3'-phosphate group. Components Components No. Name 14503ES76 14503ES86 14503ES92 14503-A UCF.METM T4 polynucleotide Kinase (10 U/μL) 50 µL 250 µL 1 mL 14503-B 10×T4 PNK Buffer* 1 mL 1 mL 2×1 mL Shipping and Storage This product should be stored at -25 ~ -15℃ for 1 year. Figures Figure1. Monomer Phosphorylation Test Note: A 300 bp monomer ligation test was performed using different batches of UCF.METM T4 Polynucleotide Kinase (10 U/μL) at 5 and 10 U, compared with Brand A. The gel image results showed that Yeasen's product outperformed Brand A in phosphorylation. Documents: Safety Data Sheet 14503_MSDS_Ver.EN20250226.pdf Manuals 14503_Manual_Ver.EN20250226.pdf
