Hantgan RR, Stahle MC, Connor JH, Lyles DS, Horita DA, Rocco M, Nagaswami C, Weisel JW, McLane MA. The disintegrin echistatin stabilizes integrin alphaIIbbeta3's open conformation and promotes its oligomerization. J Mol Biol. 2004 Oct 01; 342(5):1625-36.