XbaI是一種發現於黃單胞菌屬細菌（Xanthomonas badrii）的II型限制酶（EC 3.1.21.4），其識別序列為[1]
5'TCTAGA 3'AGATCT
切割產生的粘性末端為
5'---T CTAGA---3' 3'---AGATC T---5'
參考文獻
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