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1: Nucleic Acids Res. 1990 Aug 25;18(16):4659-64.Click here to read Click here to read Links

Cloning and nucleotide sequence of the genes coding for the Sau96I restriction and modification enzymes.

Szilák L, Venetianer P, Kiss A.

Institute of Biochemistry, Biological Research Center, Hungarian Academy of Sciences, Szeged.

The genes coding for the GGNCC specific Sau96I restriction and modification enzymes were cloned and expressed in E. coli. The DNA sequence predicts a 430 amino acid protein (Mr: 49,252) for the methyltransferase and a 261 amino acid protein (Mr: 30,486) for the endonuclease. No protein sequence similarity was detected between the Sau96I methyltransferase and endonuclease. The methyltransferase contains the sequence elements characteristic for m5C-methyltransferases. In addition to this, M.Sau96I shows similarity, also in the variable region, with one m5C-methyltransferase (M.SinI) which has closely related recognition specificity (GGA/TCC). M.Sau96I methylates the internal cytosine within the GGNCC recognition sequence. The Sau96I endonuclease appears to act as a monomer.

PMID: 2204026 [PubMed - indexed for MEDLINE]

PMCID: PMC331911