TheBioCosmos on Instagram: "I found this super weird looking protein while mining for some protein structures. This is a dimeric (two) Apolipoprotein A. This protein is incredibly important in regulating lipid metabolism. It acts as a structural component for the High Density Lipid (HDL) particles, that people often refer to as "good fat". The protein has this circular saddle shape that is thought to enable it to bind and then wrap around the lipid particle, keeping it contained (the black circl