Figure 7

Identification of the αvβ5 integrin-binding site in ISM. (a) Schematic diagrams showing the truncated ISM protein fragments produced as recombinant proteins in E. coli. Numbers refer to the amino acid position in the full-length secreted ISM protein. The positon of KD316AA mutation is indicated by the arrowhead. The black triangle at the right end of each truncated protein represent His-tag. (b) EC adhesion to various ISM protein fragments compared with 0.2% gelatin. 3% BSA was used as the negative control. (c) KD316AA mutation abolished the anti-tube formation activity of ISM