Topoisomerase I fragment

(Catalog # B007)

Description:

Topoisomerase I fragment (AA 1-200) is produced from a E. coli expression system, purified from freshly extracted cell lysates, and purified to homogeneity using methods developed by LAE Biotechnology Co., LTD. The final fraction of protein contains a single polypeptide band of 50 kDa in a concentration of 0.5 ug/ul and is devoid of contaminating nuclease activity.

Storage Buffer:

In PBS buffer with 20% glycerol. In general the protein is less stable when diluted. We recommend that you do not dilute the enzyme before storage at -70 C. In addition, it is a good practice to aliquot the enzyme after the first thaw.

Shipping/Storage:

The enzyme is shipped on ice and must be stored at -20 degree or lower.