| 
                     | 
                
                  Biological Magnetic Resonance Data BankA Repository for Data from NMR Spectroscopy on Proteins, Peptides, Nucleic Acids, and other Biomolecules  | 
                
                    Member of
                    
                         | 
            
	Spinal muscular atrophy (SMA) is a genetic disease that attacks nerve cells, called motor neurons, in the spinal cord.
| Gene Name | Chromosome number | 
|---|---|
| SMN2 | 5 | 
| SMN1 | 5 |