有作用相同的限制性核酸内切酶吗?

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有作用相同的限制性核酸内切酶吗?

有作用相同的限制性核酸内切酶吗?
有作用相同的限制性核酸内切酶吗?

有作用相同的限制性核酸内切酶吗?
有,
有的限制酶酶切位点是相同的 ,末端是相同的

下面的描述很详细,还有举例:(我在维基百科上找来的)
Different restriction enzymes that recognize the same sequence are known as neoschizomers. These often cleave in a different locales of the sequence; however, different ...

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下面的描述很详细,还有举例:(我在维基百科上找来的)
Different restriction enzymes that recognize the same sequence are known as neoschizomers. These often cleave in a different locales of the sequence; however, different enzymes that recognize and cleave in the same location are known as an isoschizomer.
Isoschizomers are pairs of restriction enzymes specific to the same recognition sequence. For example, Sph I (CGTAC/G) and Bbu I (CGTAC/G) are isoschizomers of each other. The first enzyme to recognize and cut a given sequence is known as the prototype, all subsequent enzymes that recognize and cut that sequence are isoschizomers. Isoschizomers are isolated from different strains of bacteria and therefore may require different reaction conditions.
An enzyme that recognizes the same sequence but cuts it differently is a neoschizomer. Neoschizomers are a specific type (subset) of Isoschizomers. For example, Sma I (CCC/GGG) and Xma I (C/CCGGG) are neoschizomers of each other.
An enzyme that recognizes slightly different sequence, but produces the same ends is a isocaudomer.
In some cases, only one out of a pair of isoschizomers can recognize both the methylated as well as unmethylated forms of restriction sites. In contrast, the other restriction enzyme can recognize only the unmethylated form of the restriction site. This property of some isoschizomers allows identification of methylation state of the restriction site while isolating it from a bacterial strain. For example, the restriction enzymes HpaII & MspI are isoschizomers, as they both recognize the sequence 5'-CCGG-3' when it is unmethylated. But when the second C of the sequence is methylated, only MspI can recognize both the forms while HpaII cannot.

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有识别位点相同,但是切割方式不同的情况。


有的限制酶酶切位点是相同的