Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/8WFR 8WFR: The Crystal Structure of PCSK9 from Biortus Proprotein convertase subtilisin/kexin type 91,2-ETHANEDIOL4-(2-HYDROXYETHYL)-1-PIPERAZINE ETHANESULFONIC ACIDGLYCEROL the crystalstructure