FIG. 3.

(A) Helical wheel projection of MalF TM 4. Point mutations in TM 4 of MalF are plotted as a canonical helix (3.6 residues per turn). TM 4 starts with P₂₇₆ and ends with Q₃₀₇. (B) Phenotypes of mutations in TM 4. See the legend to Fig. 2B for further details.