Metallic Protein

I made this art while studying geometry nodes in Blender. I've tried to create the "heme" molecule with a shader related to a metallic alloy for each atom type, being somehow "contaminated" by gold. The textures were created procedurally in Blender.

Curiously this ended also looking like a planetary system to me.

About the protein: "Crystal structure of a heme oxygenase (HmuO) from Corynebacterium diphtheriae complexed with heme in the ferrous state". (PDB 1IW1)