Secondary Structure - A Common Example

As illustrated with the beads, secondary structure refers to the way small parts of a molecule that are close to each other in the primary sequence fold up to be nearer to each other. A helix is an example of secondary structure that demonstrates this result. Beta sheets are another common form of secondary structure. Beta sheets can often result in separate chains of molecules being brought close together. Changing even one piece of the primary structure can drastically change the resulting secondary structure of the molecule.

Below is an illustration of a helix (seen on the left in pink) and a beta sheet (seen on the right in yellow).

Hold the arrow from your mouse over the molecules and hold down the left mouse button. This will allow you to move the structures.

Things To Think About