Figure 7A. Copyright: This image is from Ema M; Taya S; Yokotani N; Sogawa K; Matsuda Y; Fujii-Kuriyama Y, Proc Natl Acad Sci U S A 1997 Apr 29;94(9):4273-8. [PMID:9113979] Copyright 1997 National Academy of Sciences, U.S.A.