Notes 11-4-09 Part 3
Protection of bacterial chromosome
methylation: ch3 added to adenine and cytosines on bacteria chromosome as last dna replication step
advantages:
allows mismatch repair system to identify old vs new dna strand
2) allows identification of potential viral dna
b)restriction enzymes: enzymes that recognize/bind to particular sequences of dna bases in dna strand and break the sugar phosphate
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