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PNA修饰多肽ARMS-PNA|PNA-DNA|suc-AAPF-pNA|Suc-(Ala)3-pNA
2022-07-27 05:31:00 【qiyueshengwu】
PNA修饰多肽ARMS-PNA|PNA-DNA|suc-AAPF-pNA|Suc-(Ala)3-pNA
PNA(Peptidenucleicacid,肽核酸)是一种人工合成的类似于DNA,RNA的化学物质。PNA的骨架是由重复的N-2-(氨乙基)-甘氨酸为单位,经由肽键组合而成。碱基与骨架之间是以亚甲羧键相连。与多肽相似的是,PNA也有N端和C端的差别。同时由于PNA没有如DNA,RNA上的磷酸基团,因此PNA与DNA,RNA之间缺乏电性相斥的现象,使得两者之间的结合强度大于DNA与DNA之间的结合。由于PNA既不属于多肽,也不属于核酸,因此,PNA不易被蛋白酶或核酸酶水解,无论在体内还是在体外,PNA都相当稳定,同时,由于碱基之间配对特异性较强,热稳定性高。

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小编axc,2022.07.20
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