Classes of rna Class Function Position hnRNa 成熟mRNA的前体 核内 SRNA 参与 hnRNA的剪接、转运 核内 SCRNA 蛋白质内质网定位合成的信胞内 号识别体的组成成分 rRNA 核蛋白体组成成分 trNa 转运氨基酸 mRNA 蛋白质合成模板
Classes of RNA Class Function Position hnRNA 成熟mRNA的前体 核内 snRNA 参与hnRNA的剪接、转运 核内 scRNA 蛋白质内质网定位合成的信 号识别体的组成成分 胞内 rRNA 核蛋白体组成成分 tRNA 转运氨基酸 mRNA 蛋白质合成模板
Stem-loops are common elements of RNA structure Stems are double-stranded Stem regions of rna that are 00 p A-form helices. They follow UCCUUCGGA回 UAUUAAAAUC Watson-Crick base pairing AGGAAGCCUCAUAAUUU AuA rules CCUcCUUCGGA-HAUAU AAAUCC U (DNA is typically a B-form GGAGGAAGCCU、UAUA一 UUUAU A CA he×) U AGGAAGCCUCAUA AUUU UCCUUCGGA回JAU-UAAA Au
Stem loop Stems are double-stranded regions of RNA that are A-form helices. They follow Watson-Crick base pairing rules. (DNA is typically a B-form helix). Stem-loops are common elements of RNA structure
Hierarchy of rna folding Ln几 (a) --- 目 → hel (d)
Hierarchy of RNA folding
RNA secondary structure motifs Hairpin loop Bulge Single-base bulge Mismatch Symmetric Asymmetric internal loop internal loop
RNA secondary structure motifs
Secondary structure diagram Tertiary structure diagram P5 P90 , UP9. 0 P G414 P1 P7 P7.1 5 P AU P3 AAAGUA A一UP72 P8 Cr. LSU rRNA intron Tetrahymena rRNA intron
Secondary structure diagram Tertiary structure diagram Cr.LSU rRNA intron Tetrahymena rRNA intron