Proteins are things that help your body work properly. You can think of them like big puzzle pieces that fit together to make your body run smoothly. However, not all protein puzzle pieces look the same. Some are long and skinny, while others are big and round.
Scientists like to group these different protein shapes into different structural classes – kind of like putting all the square puzzle pieces in one pile, and all the circular ones in another pile. They do this because it helps them understand how the proteins work and what they do in your body.
There are four main categories of structural classes: alpha helix, beta sheet, random coil, and fibrous.
The alpha helix proteins look like twisty spirals, like a curly straw. These proteins are often found inside your cells, and they help keep things in the right place.
The beta sheet proteins look like blankets or sheets of paper folded over and over again. These proteins can be found both inside and outside of cells, and they help to make structures like the walls that surround cells.
The random coil proteins don't look like any particular shape, they just kind of flop around. These proteins are often involved in signaling or communication between cells.
The fibrous proteins are super long and skinny, like pieces of spaghetti. These proteins make up things like your hair and nails, and they help to give your body structure and support.
Overall, these different structural classes of proteins are important because they help scientists understand how proteins work, which can lead to new discoveries and treatments for different diseases.