Fig. 4.
GAG modification is critical for SRGN binding to CD44. CM was harvested from H1299/Mock, H1299/SRGN or H1299/SRGN(S/A) cells, and incubated with CD44-Fc or IgG control for 18 h at 37 °C. Western blot analysis of SRGN in the input proteins and proteins bound to CD44-Fc and IgG using anti-SRGN antibody was shown