Cytoskeleton-associated protein 4 is a protein that in humans is encoded by the CKAP4 gene.[5][6]
CKAP4 also historically known as CLIMP-63 (cytoskeleton-linking membrane protein 63), or just p63 (during the 1990s) is an abundant type II transmembrane protein residing predominantly in the endoplasmic reticulum (ER) of eukaryotic cells and encoded in higher vertebrates by the gene CKAP4.[7][8][9][10][11]