Adapter protein required for Golgi and endoplasmic reticulum biogenesis. Involved in Golgi and endoplasmic reticulum maintenance during interphase and in their reassembly at the end of mitosis. Regulates the centrosomal levels of kinase aurka-a/Aurora A during mitotic progression by promoting aurka-a removal from centrosomes in prophase. Also, regulates spindle orientation during mitosis. Localizes to centrosome during mitotic prophase and metaphase. Belongs to the NSFL1C family.