The UMD-DYSF mutations database
Statistics: Sequence of exon 1 
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Potential stop codons from exon 1
| AA position |  Wild type codon |  Wild type AA |  exon |  Species | 
|---|
| 1 | ATG | Met | 1 | 1 | 
| 2 | CTG | Leu | 1 | 1 | 
| 3 | AGG | Arg | 1 | 1 | 
| 4 | GTC | Val | 1 | 1 | 
| 5 | TTC | Phe | 1 | 1 | 
| 6 | ATC | Ile | 1 | 1 | 
| 7 | CTC | Leu | 1 | 1 | 
|  8 |  TAT |  Tyr |  1 |  1 | 
| 9 | GCC | Ala | 1 | 1 | 
|  10 |  GAG |  Glu |  1 |  1 | 
| 11 | AAC | Asn | 1 | 1 | 
| 12 | GTC | Val | 1 | 1 | 
| 13 | CAC | His | 1 | 1 | 
| 14 | ACA | Thr | 1 | 1 | 
| 15 | CCC | Pro | 1 | 1 | 
| 16 | GAC | Asp | 1 | 1 | 
| 17 | ACC | Thr | 1 | 1 | 
| 18 | GAC | Asp | 1 | 1 | 
| 19 | ATC | Ile | 1 | 1 | 
| 20 | AGC | Ser | 1 | 1 | 
| 21 | GAT | Asp | 1 | 1 | 
| 22 | GCC | Ala | 1 | 1 | 
|  23 |  TAC |  Tyr |  1 |  1 | 
|  24 |  TGC |  Cys |  1 |  1 | 
| 25 | TCC | Ser | 1 | 1 | 
| 26 | GCG | Ala | 1 | 1 | 
| 27 | GTG | Val | 1 | 1 | 
| 28 | TTT | Phe | 1 | 1 | 
| 29 | GCA | Ala | 1 | 1 | 
| 30 | GGG | Gly | 1-2 | 1 | 
Red: Amino acids that can be mutated in a stop codon by a single substitution (example: GAT -> TAG)
Species: 1=Human; 2=Mammals; 3=Vertebrates