Robuta

https://www.ncbi.nlm.nih.gov/Structure/pdb/6YV9
Glycosyl transferase, family 2GUANOSINE-5'-DIPHOSPHATE-ALPHA-D-MANNOSEMANGANESE (II) ION
pyrobaculum calidifontismannosyltransferasecomplexgdp
https://www.ncbi.nlm.nih.gov/Structure/pdb/6YV7
Glycosyl transferase, family 2
pyrobaculum calidifontismannosyltransferase