Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/1EJB 1EJB: LUMAZINE SYNTHASE FROM SACCHAROMYCES CEREVISIAE LUMAZINE SYNTHASE5-(6-D-RIBITYLAMINO-2,4-DIHYDROXYPYRIMIDIN-5-YL)-1-PENTYL-PHOSPHONIC ACID saccharomyces