Recombinant Rhizobium radiobacter T-DNA border endonuclease virD2 (virD2)

MPDRAQVIIRIVPGGGTKTLQQIINQLEYLSRKGKLELQRSARHLDIPVPPDQIRELAQSWVTEAGIYDESQSDDDRQQDLTTHIIVSFPAGTDQTAAYEASREWAAEMFGSGYGGGRYNYLTAYHVDRDHPHLHVVVNRRELLGHGWLKISRRHPQLNYDGLRKKMAEISLRHGIVLDATSRAERGIAERPITYAEHRRLERMQAQKIQFEDTDFDETSPEEDRRDLSQSFDPFRSDPSTGEPDRATRHDKQPLEQHARFQESAGSSIKADARIRVSLESERSAQPSASKIPVIGHFGIETSYVAEASVRKRSGIFGTSRPVTDVAMHTVKRQQRSKRRNDEEAGPSGANRKGLKAAQVDSEANVGEQDTRDDSNKAADPVSASIGTEQPEASPKRPRDRHDGELGGRKRARGNRRDDGRGGT

Tumor formation by A.tumefaciens involves the transfer and integration of a defined segment (T-DNA) of Ti plasmid DNA into the plant nuclear genome. The virD operon encodes a site-specific endonuclease that cleaves at a unique site within both 24 bp direct repeats flanking the T-DNA.

If the delivery form is liquid, the default storage buffer is Tris/PBS-based buffer, 5%-50% glycerol. If the delivery form is lyophilized powder, the buffer before lyophilization is Tris/PBS-based buffer, 6% Trehalose, pH 8.0.

We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20°C/-80°C. Our default final concentration of glycerol is 50%. Customers could use it as reference.

"Double-stranded cleavage of T-DNA and generation of single-stranded T-DNA molecules in Escherichia coli by a virD-encoded border-specific endonuclease from Agrobacterium tumefaciens." Jayaswal R.K., Veluthambi K., Gelvin S.B., Slightom J.L. J. Bacteriol. 169:5035-5045 (1987)

The shelf life is related to many factors, storage state, buffer ingredients, storage temperature and the stability of the protein itself. Generally, the shelf life of liquid form is 6 months at -20°C/-80°C. The shelf life of lyophilized form is 12 months at -20°C/-80°C.