This gene encodes a multi-pass membrane protein with a major sperm protein (MSP) domain. The deletion of a similar mouse gene is associated with defective cardiac development and neonatal lethality. Alternate transcriptional splice variants, encoding different isoforms, have been described.
Pall GS, Wallis J, Axton R, Brownstein DG, Gautier P, Buerger K, Mulford C, Mullins JJ, Forrester LM (December 2004). "A novel transmembrane MSP-containing protein that plays a role in right ventricle development". Genomics. 84 (6): 1051–9. doi:10.1016/j.ygeno.2004.08.017. PMID15533722.