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Biotechnology : Principles And Processes

Question
CBSEENBI12047547

Recognition sequence in Eco RI is

  • GGCC

  • GAATTC

  • AAGCTT

  • CTGCAG

Solution

B.

GAATTC

Eco RI comes from E.coli, strain R. Eco RI recognises dyad (mirror) sequences. Dimers sit on both strands of DNA simultaneously. Recognition site for Eco RI is

5'- G - A - A - T - T - C - 3'
3' - C - T - T - A - A - G - 5'

This DNA sequence is the six base sequence recognised by the restriction enzyme Eco RI.