Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/8BO3
Coagulation factor XIa light...
coagulation factor xiproteasedomaincomplexactive
https://www.ncbi.nlm.nih.gov/Structure/pdb/1ZLR
Coagulation factor XI(1R)-2-{[AMINO(IMINO)METHYL]AMINO}-1-{4-[(4R)-4-(HYDROXYMETHYL)-1,3,2-DIOXABOROLAN-2-YL]PHENYL}ETHYL NICOTINATEGLYCEROLSULFATE ION
factor xicatalytic domain