The MORN (Membrane Occupation and Recognition Nexus) repeat is found in multiple copies in several proteins including junctophilins (see Takeshima et al. Mol. Cell 2000;6:11-22). A MORN-repeat protein has been identified in the parasite Toxoplasma gondiis a dynamic component of cell division apparatus in Toxoplasma gondii. It has been hypothesized to functions as a linker protein between certain membrane regions and the parasite's cytoskeleton.
Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.",