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Cap variations of flanking nucleotide modifications.
| Trimethylguanosine cap | 7-Methylguanosine cap | |
|---|---|---|
| Type 0 | m3 2,2,7GpppN- | m7GpppN- |
| Type I | m3 2,2,7GpppNmN- | m7GpppNmN- |
| Type II | m3 2,2,7GpppNmNmN- | m7GpppNmNmN- |
| Type III | m3 2,2,7GpppNmNmNmN- | m7GpppNmNmNmN- |
| Type IV | m3 2,2,7GpppNmNmNmNmN- | m7GpppNmNmNmNmN- |
