This extracellular domain is found repeated four times in grasshopper fasciclin I as well as in proteins from mammals, sea urchins, plants, yeast and bacteria [1].

1: Structural and phylogenetic analyses of RGD-CAP/beta ig-h3, a fasciclin-like adhesion protein expressed in chick chondrocytes. Kawamoto T, Noshiro M, Shen M, Nakamasu K, Hashimoto K, Kawashima-Ohya Y, Gotoh O, Kato Y; Biochim Biophys Acta 1998;1395:288-292. PMID:9512662