Structural highlights 
4ys9 is a 1 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: | 4wth | 
| Gene: | ATXN3, ATX3, MJD, MJD1, SCA3 (HUMAN) | 
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT | 
  Function 
[MALE_ECO57] Involved in the high-affinity maltose membrane transport system MalEFGK. Initial receptor for the active transport of and chemotaxis toward maltooligosaccharides (By similarity).