<p>This entry represents the CAP protein. Structurally, CAP is a protein of 474 to 551 residues, which consist of two domains separated by a proline-rich hinge. In budding and fission yeasts the CAP protein is a bifunctional protein whose N-terminal domain binds to adenylyl cyclase, thereby enabling that enzyme to be activated by upstream regulatory signals, such as Ras. The function of the C-terminal domain is less clear, but it is required for normal cellular morphology and growth control [<cite idref="PUB00003626"/>]. CAP is conserved in higher eukaryotic organisms where its function is not yet clear [<cite idref="PUB00003092"/>]. </p> CAP, conserved site