click below
click below
Normal Size Small Size show me how
MMBio Ch.7 Enzymes
| Term | Definition |
|---|---|
| Type II restriction endonuclease | cleaves DNA at specific base sequences |
| DNA ligase | joins two DNA molecules or fragments |
| DNA polymerase I | Fills single-stranded gapes in duplex DNA by stepwise addition of nucleotides to 3' ends |
| Reverse transcriptase | Makes a DNA copy of an RNA molecule |
| Polynucleotide kinase | Adds a phosphate to the 5'-OH end of a polynucleotide, to label it or permit ligation |
| Terminal transferase | Adds homopolymer tails to the 3'-OH ends of a linear duplex |
| Exonuclease III | Removes nucleotide residues from the 3' ends of DNA strand |
| Bacteriophage (lambda) exonuclease | removes nucleotides from the 5' ends of a duples to expose single-stranded 3' ends |
| Alkaline phosphatase | removes terminal phosphates from the 5' end, the 3' end, or both |