There is a restriction endonuclease called EcoRI. What does 'co' part in it stand for?

Options

A. coelom
B. Coenzyme
C. coli
D. Colon

Answer

c

Explanation

Restriction endonuclease recognises a particular palindromic sequence and degrades the same. It was so, called because it retricted the growth of bacteriaophage in the bacterium (e.g. coli).
The convention for naming these enzymes is the first latter of the name comes from the bacterial genus, the second two letters come from the species, and the fourth letter from strain, e.g. Eco RI comes from Escherichia coli RY13. Roman numbers following the name indicate the order in which the enzymes were isolated.