. . "SYNTHESIS" . "MUTAGENESIS OF THR-1; ARG-3; TYR-4; LEU-5; PHE-6; GLY-7; GLY-8; LYS-10; THR-11; THR-12; ALA-13; ASP-14; LYS-17; HIS-18; ALA-20; ARG-22; SER-23; ASP-24; GLY-25; LYS-26; ALA-29; TRP-30; ASP-31; GLY-32; THR-33 AND PHE-34" . "IDENTIFICATION OF THE ACTIVE FACE" . . . .