Protein plays Jekyll and Hyde role in Lou Gehrig's disease

Amyotrophic lateral sclerosis (ALS), more commonly known as Lou Gehrig's disease, is a fatal neurodegenerative disease caused by the death of motor neurons in the brain and spinal cord that control muscle movements from walking and swallowing to breathing. In a groundbreaking study this week in PLoS Biology, Brandeis and Harvard Medical School scientists report key findings about the cause and occurrence of the familial form of ALS.

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