>2PN4_1|Chains A, C|5'-R(*CP*GP*GP*AP*GP*GP*AP*AP*CP*UP*AP*CP*UP*GP*UP*CP*UP*UP*CP*AP*CP*GP*CP*C)-3'|null CGGAGGAACUACUGUCUUCACGCC >2PN4_2|Chains B, D|5'-R(*GP*CP*GP*(5BU)P*GP*UP*CP*GP*UP*GP*CP*AP*GP*CP*CP*(5BU)P*CP*CP*GP*G)-3'|null GCGUGUCGUGCAGCCUCCGG