https://www.ncbi.nlm.nih.gov/Structure/pdb/4Y74
4Y74: Yeast 20S proteasome in complex with Ac-LAL-ep
Probable proteasome subunit alpha type-7Proteasome subunit alpha type-1Proteasome subunit alpha type-2Proteasome subunit alpha type-3Proteasome subunit alpha...
yeastproteasomecomplexaclal