Garcia BL, Summers BJ, Ramyar KX, Tzekou A, Lin Z, Ricklin D, Lambris JD, Laity JH, Geisbrecht BV. A structurally dynamic N-terminal helix is a key functional determinant in staphyococcal complement inhibitors inhibitor (SCIN) proteins. Journal of Biological Chemistry 2013 288(4): 2870-2881.