Having 'solved' the structure of ... as the core of the collagen molecule. This turned out to be quite reasonable because it was known that polyproline formed a helix 3, of three residues per ...

Figure 1: Pauling and Corey's first guess at the structure of collagen, showing a beautifully drawn illustration of their proposed three-chain helix: it was wrong, and they later withdrew it.

The study found intricate molecular mechanisms that allow proteins to survive for millions of years. Collagen is a ...

The carbon atom also forms a double bond with an oxygen atom, forming a molecular structure called a carbonyl group ... To demonstrate this, Raines and his colleagues created two interconverting ...