May be involved in maintaining Golgi structure. Highly expressed in brain, heart and kidney. Detected at lower levels in liver, thymus, spleen, lung and peripheral blood leukocytes. Extended rod-like protein with coiled-coil domains. Antibodies against GM88 are present in serum from a patient with Sjoegren syndrome. Sera from patients with Sjoegren syndrome often contain antibodies that react with normal components of the Golgi complex. Belongs to the GOLGA8 family. A family of highly similar proteins (GOLGA8A, GOLGA8B, GOLGA8C, GOLGA8D, GOLGA8E, GOLGA8F, GOLGA8G) are encoded by a repeated region on chromosome 15q11-15q13. Our sequences are in agreement with HGNC nomenclature.