POLYPEPTIDES WITH PERMEASE ACTIVITY

The invention relates to a polypeptide having one or more substitution corresponding to F85T/A/C/H/M/N, T89H/D/C/A/N, V187T/C/D/E/F/G/H/K/M/Q/R/S/W/Y, A191N/G/P/ C/D/F/H/I/K/Q/V/W/Y, Y214V/Q/G/L/M/N/P/R/S, Q215L/M/I/A/C/D/F/S, I218K/N/A/C/D/E/H/L, T219G/F/D/N, I222D/C/H/E/G/P/S/V/Y, Y226D/M/R/C/G/H/I/L/P/Q/T/W, Q338C/E/F/D/G/I/P/R/S/T/V/W/Y, M339N/V/D/E/H/K/P/Q/R/Y, Q341T/M/N/S/Y, Q342Y/S/C/A/D/F/G/H/I/K/L/N/P/R/T/V/W, L343K/R/P/C/D/E/G/H/I/M/N/Q/S/T/Y, N346W/Y/F/G/H/K/L/M/R/T, N347A/I/E/H/L, Y350R/L/T/D/K/M/N/V, G373L/E/N /F/K/M/R/V/W/Y, N376I/T/M/A/C/E/F/H/K/L/P/Q/R/V/W/Y, T380M/F/H/N/P/Q/R/S/V, S383Q/T/C/D/E/F/I/K/L/M/R/V/W/Y, F444Y/D/E/H/K/N/P/Q/R/W, F446Q/L/H/D/E/I/M/N, T448M/H/D/E/F/K/R/W/Y, T449F/M/N/S/D/E/G/H/I/K/L/P/Q/R/V/W/Y, T451I/E/C/D/F/H/K/L/M/N/Q/R/S/T/V/W/Y, W455T/N/A/C/E/L/P/Q/T, N478P/F/V/G/I/K/R/W, or W479T/S/Q/D/E/F/G/H/I/M/N/P/R/V/Y of SEQ ID NO:59, wherein the polypeptide is a member of the Major Facilitator Superfamily (MFS). Cette invention concerne un polypeptide comportant une ou plusieurs substitutions correspondant à F85T/A/C/H/M/N, T89H/D/C/A/N, V187T/C/D/E/F/G/H/K/M/Q/R/S/W/Y, A191N/G/P/ C/D/F/H/I/K/Q/V/W/Y, Y214V/Q/G/L/M/N/P/R/S, Q215L/M/I/A/C/D/F/S, I218K/N/A/C/D/E/H/L, T219G/F/D/N, I222D/C/H/E/G/P/S/V/Y, Y226D/M/R/C/G/H/I/L/P/Q/T/W, Q338C/E/F/D/G/I/P/R/S/T/V/W/Y, M339N/V/D/E/H/K/P/Q/R/Y, Q341T/M/N/S/Y, Q342Y/S/C/A/D/F/G/H/I/K/L/N/P/R/T/V/W, L343K/R/P/C/D/E/G/H/I/M/N/Q/S/T/Y, N346W/Y/F/G/H/K/L/M/R/T, N347A/I/E/H/L, Y350R/L/T/D/K/M/N/V, G373L/E/N /F/K/M/R/V/W/Y, N376I/T/M/A/C/E/F/H/K/L/P/Q/R/V/W/Y, T380M/F/H/N/P/Q/R/S/V, S383Q/T/C/D/E/F/I/K/L/M/R/V/W/Y, F444Y/D/E/H/K/N/P/Q/R/W, F446Q/L/H/D/E/I/M/N, T448M/H/D/E/F/K/R/W/Y, T449F/M/N/S/D/E/G/H/I/K/L/P/Q/R/V/W/Y, T451I/E/C/D/F/H/K/L/M/N/Q/R/S/T/V/W/Y, W455T/N/A/C/E/L/P/Q/T, N478P/F/V/G/I/K/R/W, ou W479T/S/Q/D/E/F/G/H/I/M/N/P/R/V/Y de SEQ ID No:59, le polypeptide étant un membre de la superfamille majeure de Facilitateurs (MFS).