The UMD-DYSF mutations database
Statistics: Sequence of exon 40 
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Potential stop codons from exon 40
| AA position |  Wild type codon |  Wild type AA |  exon |  Species | 
|---|
| 1446 | GAT | Asp | 40 | 1 | 
| 1447 | GTG | Val | 40 | 1 | 
| 1448 | AGC | Ser | 40 | 1 | 
| 1449 | CTA | Leu | 40 | 1 | 
| 1450 | CTC | Leu | 40 | 1 | 
| 1451 | AGT | Ser | 40 | 1 | 
| 1452 | CCT | Pro | 40 | 1 | 
| 1453 | GGG | Gly | 40 | 1 | 
|  1454 |  GAA |  Glu |  40 |  1 | 
| 1455 | GAC | Asp | 40 | 1 | 
| 1456 | GTG | Val | 40 | 1 | 
| 1457 | CTC | Leu | 40 | 1 | 
| 1458 | ATC | Ile | 40 | 1 | 
| 1459 | GAC | Asp | 40 | 1 | 
| 1460 | ATT | Ile | 40 | 1 | 
| 1461 | GAT | Asp | 40 | 1 | 
| 1462 | GAC | Asp | 40 | 1 | 
|  1463 |  AAG |  Lys |  40 |  1 | 
|  1464 |  GAG |  Glu |  40 |  1 | 
| 1465 | CCC | Pro | 40 | 1 | 
| 1466 | CTC | Leu | 40 | 1 | 
| 1467 | ATC | Ile | 40 | 1 | 
| 1468 | CCC | Pro | 40 | 1 | 
| 1469 | ATC | Ile | 40 | 1 | 
|  1470 |  CAG |  Gln |  40 |  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