Component of the sarcoglycan complex, a subcomplex of the dystrophin-glycoprotein complex which forms a link between the F-actin cytoskeleton and the extracellular matrix. Ubiquitous. N-glycosylated. Ubiquitinated, leading to its degradation by the proteasome. The disease is caused by variants affecting the gene represented in this entry. Brain-specific. Belongs to the sarcoglycan alpha/epsilon family. Truncated N-terminus. Truncated N-terminus.