Edwin C. Krebs

Edwin C. Krebs was a renowned American biochemist who made groundbreaking contributions to understanding how muscles contract. He discovered that a process called phosphorylation—adding a phosphate group to proteins—controls muscle movement. His research revealed the biochemical steps involved in muscle relaxation and contraction, leading to a deeper understanding of cellular signaling. This work earned him the Nobel Prize in Physiology or Medicine in 1992, shared with Edmond H. Fischer. Krebs’s discoveries have been crucial for advancing medical science, especially in understanding muscle function and related disorders.