... D16W-D 24) 37GGN4, a GGN4analogue with both the C-terminal 14 residue truncation and the substitution of the aspartic acid at position 16 bytryptophan, showed antimicrobial activity comparable tothat of native ... single tryptophanyl substitution toincrease the antimicrobial activity of the C-terminally truncated GGN4. In addition, in this work, the singlephenylalanine substitution at position 16 of the C-terminally truncated ... Effects of a tryptophanyl substitution on the structure and antimicrobial activity of C-terminally truncated gaegurin 4 Hyung-Sik Won1, Sang-Ho Park1, Hyung Eun Kim1, Byongkuk Hyun2,...