A conventional method for naming restriction enzymes is followed. In case of EcoRI, what do the following indicate
A
E- Strain; co - Genus; R - Order of isolation; I - Species
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B
E - Genus; co - Order of isolation; R - Strain; I - Species
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C
E - Genus; co - Species; R - Strain; I - Order of isolation
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D
E - Order of isolation; co - Species; R - Strain; I - Genus
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Solution
The correct option is C E - Genus; co - Species; R - Strain; I - Order of isolation EcoRI comes from Escherichia coli RYB strain. In EcoRI, ‘E’ comes from the genus 'Escherichia' and ‘co’ comes from the species name ‘coli’. The genus and species names should be in italics. The letter ‘R’ is derived from the name of the strain RYB. Roman numbers following the names indicate the order in which the enzymes were isolated from that strain of bacteria.