From: Systematic analysis of alternative first exons in plant genomes
 |  | Rice | Arabidopsis |
---|---|---|---|
Type I AFE | Â | 137 | 99 |
 | N-terminal diversification | 53 | 20 |
 |    Overlapping with functional domain | 5 | 1 |
 | Putative alternative promoter | 62 | 22 |
 | Both N-terminal and PAP | 3 | 7 |
 | NMD | 47 | 10 |
Type II AFE | Â | 1,241 | 546 |
 | N-terminal diversification | 213 | 298 |
 |    Overlapping with functional domain | 56 | 71 |
 | Putative alternative promoter | 257 | 352 |
 | Both N-terminal and PAP | 189 | 244 |
 | NMD | 237 | 42 |
Total | Â | 1,378 | 645 |