amino acid sequence analysis by secondary ion mass spectrometry and additional physico-chemical evidence indicate that the structures of plipastatinic acids , the lactone-opened peptides are as follows : beta-hydroxy fatty acid -- -- l-glu -- -- d-orn -- -- l-tyr -- -- d-allo-thr -- -- l-glu -- -- d-ala ( val ) -- -- l-pro -- -- l-gln -- -- d-tyr -- -- l-ile x oh .
C0061472
glu
C0017797
gln