FEEDBACK to BioTopics Return to the contents page?

Insulin secondary structure

Insulin molecule showing 2 coiled chains and other information
In this view the two polypeptide chains are given different colours (blue for A, red for B).
 The coiling, and the straighter connecting sections which can be clearly seen here,
are a result of the secondary level of protein structure.

Note the superimposed amino acid residue codes and numbers in the sequence, as well as the letters corresponding to the chains. This is effectively the primary  protein structure, from which the other levels are built up.

Some of the details which result in the next levels of protein structure have been left out.

Contents page         Front (index) page