Answer
Six different tripeptides can be made from glycine, serine, and glutamic acid:
a. Gly-Glu-Ser (GGS)
b. Gly-Ser-Glu (GSG)
c. Glu-Gly-Ser (GGS)
d. Glu-Ser-Gly (GSG)
e. Ser-Gly-Glu (SGG)
f. Ser-Glu-Gly (SGG)
Work Step by Step
Given above