Description
- Isolated from a recombinant source
- Supplied with 10X Reaction Buffer
- 5' → 3' exonuclease
Description:
RecJ
f is a single-stranded DNA specific exonuclease that catalyzes the removal of deoxy-nucleotide monophosphates from DNA in the 5' → 3' direction. RecJ
f is a recombinant fusion protein of RecJ and maltose binding protein (MBP). It has the same enzymatic properties as wild-type RecJ. Fusion to MBP enhances RecJ
f solubility.
When DNA containing a 22 base 5' extension is used as a substrate for RecJ
f, the resulting products are a mixture of DNA fragments that have blunt-ends, 5' extensions (1-5 nucleotides) and recessed 5' ends (1-8 nucleotides) . RecJ
f does not require a 5' phosphate (3).
Source:
RecJ
f is overexpressed and purified as a C-terminal fusion to maltose-binding protein (MBP). MBP does not affect the catalytic activity of RecJ
f but does enhance RecJ
f solubility (2).
Reagents Supplied:
NEBuffer 2 (10X)