Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/4R84
Sialyltransferase 0160CALCIUM IONCYTIDINE-5'-MONOPHOSPHATE-3-FLUORO-N-ACETYL-NEURAMINIC ACID
crystal structuresialyltransferasephotobacteriumcmp
https://www.ncbi.nlm.nih.gov/Structure/pdb/2YK7
CMP-N-ACETYLNEURAMINATE-BETA-GALACTOSAMIDE-ALPHA-2,3-SIALYLTRANSFERASE1,2-ETHANEDIOLCYTIDINE-5'-MONOPHOSPHATE-3-FLUORO-N-ACETYL-NEURAMINIC ACIDPENTAETHYLENE...
structureneisserialosspecificsialyltransferase