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. 2021 Sep 7;12:5127. doi: 10.1038/s41467-021-25348-2

Fig. 5. Dkk4 mutations in Ticked cats.

Fig. 5

a Cat breeds selected for Spotted (Egyptian Mau) or for Ticked (Abyssinian and Burmese) color patterns, along with their inferred Ticked genotypes. Images from Helmi Flick, with permission. b Ticked genetic interval delineated by linkage19 or shared haplotypes among cats with Dkk4 mutations. Coordinates are based on the felCat9 assembly. c Dkk4 coding mutations (red) at the signal peptide cleavage site (p.Ala18Val) or a cysteine residue (p.Cys63Tyr) involved in disulfide bridge and cysteine knot formation within cysteine-rich domain 1 (CRD1). d Representative Western blot and quantitation of variant Dkk4 proteins produced by HEK293 cells 48 h after transfection. Dkk4 proteins are detected with an anti-FLAG antibody; co-transfection with a GFP-expressing plasmid and subsequent detection of GFP provides a control for transfection efficiency. Relative intensity on the y-axis refers to the ratio of the Dkk4 band to GFP band intensity, normalized to non-mutant Dkk4; thus non-mutant Dkk4 relative intensity = 1.0 for both media and cell lysate. The experiment was repeated three times (mean +/− sem, one-way ANOVA, F = 515.2, P = 1.94 × 10−7 for media).