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Question

Scientists isolated a restriction enzyme from Arthrobacter luteus for the first time and need to name it. Which of the following names do you think should be used?

A
RalII
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B
ArlI
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C
AluI
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D
ResI
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Solution

The correct option is C AluI
A convention is followed to name restriction enzymes.

The first letter represents the first letter of the genus. In this case it is ‘A’.

The second and third letter represents the first two letters of the species. In this case it is ‘lu’. The genus and species name should be written in italics.

The number represents the order in which the enzymes are isolated. Since this enzyme was the first one to be isolated, it is I. Hence, AluI.

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