Figure 2: Five independent VIR mutations account for virescens fruit exocarp colour phenotype.
From: The oil palm VIRESCENS gene controls fruit colour and encodes a R2R3-MYB
(a) Diagram of the VIR gene. The 2.4-kb locus (top line) includes three exons (open boxes) encoding the regions of the R2R3-MYB protein, as indicated by dashed lines. The protein (bottom diagram) includes two helix-loop-helix motifs, R2 and R3. Symbols above the C-terminal domain represent relative positions of the event 1–5 mutations. Symbol colours indicate the specific mutational event as shown in panel b. (b) Protein sequence of the carboxy-terminal region of VIR encoded by wild-type and mutant VIR alleles. Nonsense point mutations (events 1–3), a 2-bp frameshift deletion (event 4) and a rearrangement (event 5) each results in premature termination at the indicated amino-acid position. DNA sequences and details of the event 5 rearrangement are provided in Supplementary Figs 3 and 4.
