MspI, an isoschizomer of HpaII which cleaves both unmethylated and methylated HpaII sites
Year: 1978
Type: article
Abstract: The cleavage of DNA by restriction endonucleases HpaII and HapII is prevented by the presence of a 5-methyl group at the internal C residue of its recognition sequence CCGG. MspI, an isoschizomer of HpaII available from New England Biolabs, cleaves DNA irrespective of the presence of a methyl group at this position. This enzyme cleaves DNA from Haemophilus parainfluenzae and Haemophilus aphrophilus readily while HpaII and HapII cannot degrade these DNAs. Practically all HpaII sites in mammalian sperm DNA are also protected by methylation at the internal C position since HpaII and HapII barely cleave this DNA (average molecular weight 40 kb). MspI, however, cleaves the DNA to an average size of about 5 kb.
Source: Nucleic Acids Research
DOI: 10.1093/nar/5.9.3231
Authors: C. Waalwijk, R.A. Flavell
Institution: University of Amsterdam
Language: English
Subfield: Molecular Biology
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W2020844796