for his work on ribonucleaseandfor their contribution to the understanding of the connection between chemical structure and catalytic activity of the ribonuclease molecule
for their elucidation of the enzymatic mechanism underlying the synthesis of adenosine triphosphateandfor his discovery of an ion-transporting enzyme, Na+, K+ -ATPase
... (usually referred to as "Bobby"), the youngest member of the group, played rhythm guitar. Pigpen played keyboards, harmonica and, was an inspirational vocalist until his ...