Figure 3: SCP/TAPS gene family expansion in N. americanus.

(a) SCPs/TAPS are enriched in the adult stage of N. americanus. (b) Schematic representation of gene structure from SCP/TAPS family members. All SCP/TAPS proteins are grouped according to their number of CAP domains and regions outside the CAP domains: single CAP domain, double CAP domain, single CAP plus miscellaneous, and double CAP plus miscellaneous. (c) Neighbor-joining clustering of the all C. elegans and ungapped N. americanus SCP/TAPS genes on the basis of their full-length primary sequence similarity of the CAP domain. Data on domain representation, secretion type and stage of expression are included.