“…The interaction of S100 proteins with CacyBP occurs via its C-terminal fragment (Filipek et al, 2002a,b;Nowotny et al, 2000;Matsuzawa et al, 2003). Calcyclin has been implicated in cell cycle progression, cell differentiation, cytoskeletal interactions, cancerous states, signal transduction, exocytosis, osteoblastogenesis and the paracrine regulation of trophoblast by decidua (Timmons et al, 1993;Breen and Tang, 2003;Thordarson et al, 1991;Farnsworth and Talamantes, 1998;Waterhouse et al, 1992;Hwang et al, 2004). CacyBP might regulate blastocyst implantation, trophoblast invasion and pregnancy maintenance through interacting with these calcium-binding proteins.…”