Bse21 I

Description

Recognition site and hydrolysis position:

Source: Bacillus species 21
Unit definition:
One unit of the enzyme is the amount required to hydrolyze 1 μg of Lambda DNA (HindIII-digest) in 1 hour at 37°C in a total reaction volume of 50 μl.
Assayed on:
Lambda DNA (HindIII-digest)
Optimal SE-buffer: SE-buffer Y
Enzyme activity (%):

Storage conditions: 10 mM KH₂PO₄ (pH 7.4); 50 mM KCl; 0.1 mM EDTA; 7 mM 2-mercaptoethanol; 200 μg/ml BSA; 50% glycerol. Store at -20°C.
Ligations:
After 2-fold overdigestion with enzyme about 50% of DNA fragments can be ligated by using of high concentration T4 DNA ligase with presence of 10% PEG. Of these more than 90% can be recut.
Non-specific hydrolisis:
No nonspecific activity was detected after incubation of 1 μg of Lambda DNA with 40 u.a. of enzyme for 16 hours at 37°C. Reagents Supplied with Enzyme 10 X SE-buffer Y
Reagents Supplied with Enzyme:
Methylation sensitivity: not tested
Notes:
References:
Degtyarev, S.Kh., Rechkunova, N.I., Repin, V.E., Kolyhalov, A.A., Netesov, S.V. Izv. Sib. Otd. Akad. Nauk SSSR 1: 138-139 (1990).
V.A. Chernukhin, M.A. Abdurashitov, V.N. Tomilov, D.A. Gonchar, S.Kh. Degtyarev Comparative restriction enzymes analysis of rat chromosomal DNA in vitro and in silico // Translated from “Ovchinnikov bulletin of biotechnology and physical and chemical biology” V.2, No 3, pp 39-46, 2006