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                  Biological Magnetic Resonance Data BankA Repository for Data from NMR Spectroscopy on Proteins, Peptides, Nucleic Acids, and other Biomolecules  | 
                
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	Fragile X syndrome is the most common form of inherited developmental disability. A problem with a specific gene causes the disease. Normally, the gene makes a protein you need for brain development. But the problem causes a person to make little or none of the protein.
| Gene Name | Chromosome number | 
|---|---|
| FMR1 | X | 
| FXR2 | 17 |