BioScience Dictionary

 
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Found Host restriction-modification 1 time.

Displaying results 1 to 10.

1. Host restriction-modification
A bacterial system where the bacterium is able to destroy invading DNA from a bacteriophage ( virus which infects bacteria) while at the same time preventing the destruction of their own DNA. The phage DNA is cleaved by a restriction enzyme made by the bacterium; the bacterial DNA is modified (usually with methylation ) so that the enzyme won't destroy it.