Unique matrix structure in the rough endoplasmic reticulum cisternae of pseudoachondroplasia chondrocytes. by Merritt, T, Bick, R, Poindexter, B, Alcorn, J, Hecht, J

“…Type IX collagen and matrilin-3 (MATN3), also accumulate in the rER cisternae of PSACH chondrocytes, but it is unknown how mutant COMP interacts with these proteins. …”

Expression of mutant cartilage oligomeric matrix protein in human chondrocytes induces the pseudoachondroplasia phenotype. by Merritt, T, Alcorn, J, Haynes, R, Hecht, J

“…Mutant COMP expressed in normal cells was retained in enlarged rER cisternae, which also retained IX collagen (COL9) and matrilin-3 (MATN3). Although these proteins were secreted normally into the ECM of the wt-COMP nodules, reduced secretion of these proteins was observed in nodules composed of cells transfected with mt-COMP. …”