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. Author manuscript; available in PMC: 2019 Jul 15.
Published in final edited form as: Eur J Med Chem. 2018 Jun 5;155:398–405. doi: 10.1016/j.ejmech.2018.06.006

Table 2.

The antimicrobial activity and selectivity of α/α-AA peptide hybrid shown in Scheme 2.

MIC (μg/mL) Hemolytic activity HC50 (μg/mL) Selectivity (HC50/MIC of MRSA)
Compound Gram + Gram −
MRSA MRSE E. faecalis E. coli K. pneumonia
C16-K-RBB1 1.5 1.5 3 3 3 125 83
C16-K-RBB2 1.5 1.5 3 3 >25 >250 >167
C16-K-RBB3 3–6 3–6 6–12 6–12 >25 >250 >42