And this is the region that basically binds onto special region in the membrane we call the GM one ganglioside. So the collagen uses its B units to bind onto the membrane single lipid called the GM one ganglioside. So a ganglioside is basically a single lipid that contains sugar molecules attached onto that polar section. And so this is what the g one ganglio side actually looks like. We have this lipid component inside the membrane and we also have these five sugars shown here, which are basically pointing towards the outside of that membrane they're found in the lumen of that small intestine. And so these five binding bee chains basically go on and bind onto this GM one ganglioside.