[1] UNIV WASHINGTON,DEPT MED,SEATTLE,WA 98195
[2] UNIV WASHINGTON,DEPT BIOCHEM,SEATTLE,WA 98195
[3] UNIV CALIF SAN DIEGO,DEPT CHEM,LA JOLLA,CA 92093
[4] UNIV SO CALIF,DEPT MOLEC BIOL,LOS ANGELES,CA 90089
[5] UNIV CALIF LOS ANGELES,INST MOLEC BIOL,LOS ANGELES,CA 90024
[6] INST BIOL CHEM,STRASBOURG,FRANCE
[7] MRC,MOLEC BIOL LAB,CAMBRIDGE,ENGLAND
[8] NORTHWESTERN UNIV,DEPT BIOCHEM & MOLEC BIOL,EVANSTON,IL 60201
[9] UNIV CALIF BERKELEY,DEPT BIOPHYS,BERKELEY,CA 94720
[10] LINUS PAULING INST SCI & MED,PALO ALTO,CA 94306