| abstract |
A variant of a parent polypeptide that is preferably a hexose transporter, wherein the parent polypeptide comprises the amino acid sequence of SEQ ID NO: 1, and wherein the variant comprises an amino acid sequence that, when aligned with amino acid sequence of SEQ ID NO: 1, comprises a substitution of amino acids N376 and T89, the positions of said amino acids being defined with reference to the amino acid sequence of SEQ ID NO: 1, in which the substitution of amino acid T89 comprises a any of T89I, T89V, T89L, T89S, T89M, or T89F. |