S100A4 inhibits cell proliferation by interfering with the S100A1-RAGE V domain - Fig 4

(A) Emission of fluorescence spectra of S100A1 titrations showing a decrease in intensity with the addition of S100A4 at μM-level concentrations. (B) Change in fluorescence intensity versus 1/[S100A4] obtained at a wavelength of 344 nm. Kd was measured 6.2 ± 0.47 μM.