ELI5: Explain Like I'm 5

Myelin oligodendrocyte glycoprotein

Myelin oligodendrocyte glycoprotein (MOG) is a very big and complicated name for something that helps protect our brain and spinal cord. Just like how we wear helmets to protect our head when we ride a bike, MOG also protects our brain cells.

MOG is made up of lots of tiny building blocks called amino acids. These amino acids connect together to make a long chain that folds up into a special shape like a big, squishy balloon. This special shape helps MOG to stick to other important parts of our brain cells.

One of MOG's jobs is to wrap around the "wire" part of the brain cells called axons. This wrapping helps keep the "wires" healthy, just like how we wrap a gift in pretty paper to keep it safe. When the axon is wrapped up in MOG, it can send messages more easily and quickly.

Another job of MOG is to send signals to other cells in the brain and help them communicate with each other. This helps us learn new things, move our muscles, and even feel emotions.

Even though MOG is such a big and important part of our brain, sometimes our body's immune system gets confused and sees MOG as something bad. This can cause problems and damage to our brain cells. But doctors and scientists are working hard to understand MOG better and find ways to protect it and keep our brain healthy.