The function of ENSG00000136026 (CKAP4, cytoskeleton associated protein 4) is as follows. Mediates the anchoring of the endoplasmic reticulum to microtubules. . High-affinity epithelial cell surface receptor for the FZD8- related low molecular weight sialoglycopeptide APF/antiproliferative factor. Mediates the APF antiproliferative signaling within cells. .