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Terminal Deoxynucleotidyl Transferase (TdT)

Marka:EURx

Ürün Ölçü Fiyat TL Miktar
Terminal Deoxynucleotidyl Transferase (TdT)
E1390-01
300 U 80 EUR
+%20 KDV
3.936,00 TL
Terminal Deoxynucleotidyl Transferase (TdT)
E1390-02
1500 U 316,8 EUR
+%20 KDV
15.586,56 TL

 

Terminal Deoxynucleotidyl Transferase

Terminal transferase (TdT) is a template independent polymerase that catalyzes the addition of deoxyribonucleotide monophosphate from triphosphate to the 3' hydroxyl terminus of DNA.

Description:

  • Prefered substrates are: single-stranded DNA, double-stranded DNA with 3’-hydroxyl termini and oligodeoxynucleotide primers (1).

  • Used for specific labeling of 3'-termini with ribonucleotides (2).

  • Labels 3'-ends of DNA fragments with an [ α-³²P] 3'-deoxynucleoside (3).

  • Adds homopolymer tails of deoxyribonucleotides to vectors or cDNAs (4,5).

Unit Definition: One unit is defined as the amount of enzyme required to transfer 1 nmol of dAMP from dATP to the 3'-OH terminus of the oligodeoxyribonucleotide initiator p(dA)50 in 1 hr at 37°C.

Storage Conditions: Store at –20°C.

Storage Buffer: 100 mM Tris-HCI (pH 7.2 at 22°C), 1 mM dithiothreitol and 50% (v/v) glycerol.

Assay Conditions: 40 mM potassium cacodylate (pH 7.2), 8 mM MgCl2, 8.3 mM potassium phosphate, 0.33 mM ZnSO4, 10 mg/ml bovine serum albumin, 0.01 mM oligodeoxynucleotide p(dA)50 and 1 mM [ α-³²P]dATP in 1 hr at 37°C in a reaction volume of 60 µl.

Quality Control: All preparations are tested for endonuclease, exonuclease and nonspecific RNase and single- and double-stranded DNase activities.

References:

  1. Chang, L.M. and Bollum, F.J. (1971) J. Biol. Chem. 246, 909-916.

  2. Roychoudhury, R. and Kossel, H. (1971) Eur. J. Biochem. 22, 310-320.

  3. Tu, C.P.D., and Cohen, S.N. (1980) Gene 10, 177-183

  4. Roychoudhury, R., Jay, E. and Wu, R. (1976) Nucleic Acids Res. 3, 863-877.

  5. Deng, G. and Wu, R. (1983) Methods Enzymol. 100, 96-116.

 

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