Structural highlights 
| 3v0n is a 2 chain structure with sequence from Human. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. 
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| Ligands: | , , , , | 
| Related: | 3ioh, 3ioi, 3ioj | 
| Gene: | AB0, ABO (HUMAN) | 
| Resources: | FirstGlance, OCA, RCSB, PDBsum | 
  Function 
[BGAT_HUMAN] This protein is the basis of the ABO blood group system. The histo-blood group ABO involves three carbohydrate antigens: A, B, and H. A, B, and AB individuals express a glycosyltransferase activity that converts the H antigen to the A antigen (by addition of UDP-GalNAc) or to the B antigen (by addition of UDP-Gal), whereas O individuals lack such activity.