Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/5CTA 5CTA: G158E/K44E/R57E/Y49E Bacillus subtilis lipase A with 10% [BMIM][Cl] Esterase1-butyl-3-methyl-1H-imidazol-3-iumCHLORIDE ION