These two genes in S. pistillata, galaxin and galaxin — like, were found to be similar to the Acropora millepora's galaxin and galaxin - like1 genes (Karako - Lampert et al., 2014), and have been characterized to be associated with
the calcifying organic matrix (Fukuda et al., 2003).
These results are interesting because galaxin was first found due to its high levels in the
organic matrix of scleractinian coral, and it was characterized as a soluble protein (Watanabe et al., 2003) and localized along the
calcifying septa (Reyes - Bermudez et al., 2009).