Angiopoietin-1 and angiopoietin-2 share the same binding domains in the Tie2 receptor involving the first Ig like loop and the epidermal growth-like repeats. - Fiedler,U.; Krissl,T.; Koidl,S.; Weiss,C.; Koblizek,T.; Deutsch,U.; Martiny-Baron,G.; Marme,D.; Augustin,H. (JBC, 2003)