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Figure 1


Fig. 1. A schematic of mouse Wnt3A, Drosophila Wingless and the C. elegans Wnt protein EGL-20. Wnts do not contain specific domains, but harbour an average of 23 to 25 cysteines that are highly conserved between different species. One of the N-terminally located cysteines is palmitoylated by the O-acyltransferase Porcupine, which binds Wnt in the corresponding region (yellow box). Wnts also contain a number of potential N-glycosylation sites, the functions of which are unknown. The signal sequence is represented in blue.





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