Provided is a means for preventing the inactivation of a photoresponsive nucleic acid probe by suppressing the formation of a photocrosslink between a photoresponsive base having a photocrosslinkable vinyl structure and a photocrosslinkable thymine (T) or uracil (U) base, by substituting with an R group (R being —CN or —CO—R
1
, where R
1
is a saturated or unsaturated straight-chain or branched cyclic or non-cyclic C1-12 hydrocarbon group) the 5 position of a pyrimidine ring of the thymine (T) or uracil (U) base which is photocrosslinkable with the photoresponsive base having a photocrosslinkable vinyl structure.
提供了一种防止光响应核酸探针失活的方法,通过在可光交联的含有可光交联
乙烯结构的光响应碱基和可光交联胸腺
嘧啶(T)或尿
嘧啶(U)碱基之间抑制光交联物的形成,通过用R基(R为—CN或—CO—R1,其中R1为饱和或不饱和直链或支链环状或非环状C1-12碳氢化合物基团)替代胸腺
嘧啶(T)或尿
嘧啶(U)碱基的
嘧啶环的5位。