Prasher (born August 1951) is an American molecular biologist.
He is known for his work to clone and sequence the genes for the photoprotein aequorin and green fluorescent protein (GFP) and for his proposal to use GFP as a tracer molecule.
He communicated his pioneering work to Martin Chalfie and Roger Y.
Tsien, but by 1991 was himself unable to obtain further research funding, and left academia.
Eventually, he had to abandon science.
Chalfie and Tsien were awarded the 2008 Nobel Prize in Chemistry for work that they publicly acknowledged was substantially based on the work of Douglas Prasher, and through their efforts and those of others, Douglas Prasher returned to scientific research work in June 2010.