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PsiI, a novel restriction endonuclease recognizing the DNA sequence 5'-TTA downward arrow TAA-3'
M A Abdurashitov1, O A Belichenko, N A Lebedeva
1SibEnzyme Co., Novosibirsk, 630117, Russia. se_info@ma.nsc.ru.
Biochemistry. Biokhimiia
|May 8, 1999
Abstract:
PsiI, a novel restriction endonuclease produced by the bacterial strain Pseudomonas sp. SE-G49, has been isolated and characterized. The enzyme cleaves DNA in the middle of its palindromic recognition sequence 5'-TTA downward arrow TAA-3'. Thus, PsiI belongs to a rare group of type II restriction endonucleases whose recognition sites consist of AT base pairs only.