Table 3. Prediction site of arginine methylation in Smad7 protein structure.
| Seq ID | R site | Peptides | Prediction score |
| Sequence | 3 | XXXXXXXMFRTKRSALVRR | 0.589355 |
| Sequence | 6 | XXXXMFRTKRSALVRRLWR | 0.640048 |
| Sequence | 11 | FRTKRSALVRRLWRSRAPG | 0.74468 |
| Sequence | 12 | RTKRSALVRRLWRSRAPGG | 0.921869 |
| Sequence | 15 | RSALVRRLWRSRAPGGEDE | 0.909561 |
| Sequence | 17 | ALVRRLWRSRAPGGEDEEE | 0.916009 |
| Sequence | 38 | GGGGGGGELRGEGATDSRA | 0.999324 |
| Sequence | 46 | LRGEGATDSRAHGAGGGGP | 0.99441 |
| Sequence | 57 | HGAGGGGPGRAGCCLGKAV | 0.99649 |
| Sequence | 67 | AGCCLGKAVRGAKGHHHPH | 0.973657 |
| Sequence | 118 | ELLLQAVESRGGTRTACLL | 0.9797 |
| Sequence | 122 | QAVESRGGTRTACLLLPGR | 0.953773 |
| Sequence | 131 | RTACLLLPGRLDCRLGPGA | 0.943454 |
| Sequence | 135 | LLLPGRLDCRLGPGAPAGA | 0.975753 |
| Sequence | 169 | CKVFRWPDLRHSSEVKRLC | 0.53692 |
| Sequence | 200 | VCCNPHHLSRLCELESPPP | 0.58066 |
| sequence | 213 | LESPPPPYSRYPMDFLKPT | 0.668651 |