Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/7M7K
Pyrimidine-nucleoside phosphorylaseSULFATE IONURIDINE
crystal structureuridineboundgeobacilluspyrimidine
https://www.wikidata.org/wiki/Q52163395
scientific article published in January 1972
pyrimidine nucleosidemutagenicitymammaliancellsanalogs