https://www.ncbi.nlm.nih.gov/Structure/pdb/5VNL
5VNL: Crystal structure of Sec23a/Sec24a/Sec22 complexed with 4-phenylbutyric acid (1mM soaking)
Protein transport protein Sec23AProtein transport protein Sec24AVesicle-trafficking protein SEC22b4-PHENYL-BUTANOIC ACIDZINC ION