Product info: HspA I Name HspA I        Cat. # E069 E070 Package, u.a. 1000 5000 Concentration, u.a./ml 20000 20000 Recognition site G↑CGC CGC↓G Source Isolated from an E.coli strain that carries the cloned HspA I gene from Haemophilus species A1 Assayed on Lambda DNA Unit definition One unit of the enzyme is the amount required to hydrolyze 1 μg of Lambda DNA in 1 hour at 37°C in a total reaction volume of 50 μl. Optimal SE-buffer Y (33 mM Tris-acetate (pH 7.9 at 25°C); 10 mM magnesium acetate; 66 mM potassium acetate; 1 mM DTT.) Enzyme activity (%) B G O W Y Rose 50 - 75 50 - 75 25 - 50 25 - 50 100 100 Optimal temperature 37oC Storage conditions 10 mM Tris-HCl (pH 7.5); 50 mM NaCl; 0.1 mM EDTA; 7 mM 2-mercaptoethanol; 200 μg/ml BSA; 50% glycerol. Store at -20°C. Ligations After 20-fold overdigestion with enzyme more than 90% of the DNA fragments can be ligated and recut. Non-specific hydrolisis No nonspecific activity was detected after incubation of 1 μg of Lambda DNA with 20 u.a. of enzyme for 16 hours at 37°C. Reagents Supplied with Enzyme 10 X SE-buffer Y Methylation sensitivity Blocked by CG methylation 5'-G(5mC)GC-3'/3'-CG(5mC)G-5'. Not blocked by methylation 5'-GCG(5mC)-3'/3'-CGCG-5'. Cut hemimethylated site: 5'- G(5mC)GC-3'/3'-CGCG-5` Inactivation 20 minutes under 80oC Quality control Restriction Endonucleases: Quality Control MSDS: Download MSDS as PDF References: Rechkunova, N.I., Prikhod'ko, E.A., Shevchenko, A.V., Degtyarev, S.K. Unpublished observations (1994).  Chernukhin V.A, Abdurashitov M.A., Tomilov V.N., Gonchar D.A., Degtyarev S.Kh. Comparative analysis of mouse chromosomal DNA digestion with restriction endonucleases in vitro and in silico // "Ovchinnikov bulletin of biotechnology and physical and chemical biology" V.3, No 4, pp 19-27, 2007  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 // "Ovchinnikov bulletin of biotechnology and physical and chemical biology" V.2, No 3, pp 39-46, 2006 Theoretical diagrams of DNA digestion by this enzyme for the most known DNA substrates: To view the fragments length values please point mouse cursor over diagram Fragment lengths M 1 2 3 4 5 M M - ladder, 1 - Adeno-2 DNA, 2 - Lambda DNA, 3 - T7 DNA, 4 - pUC19, 5 - pBR322