Owen, D., Alexandrov, K. A., Rostkova, E., Scheidig, A. J., Goody, R. S., & Waldmann, H. (1999). Chemo-enzymatic synthesis of fluorescent Rab 7 proteins: Tools to study vesicular trafficking in cells. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 38(4), 509-512. doi:10.1002/(SICI)1521-3773(19990215)38:4<509:AID-ANIE509>3.3.CO;2-V.