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. 2020 Aug 13;18(8):424. doi: 10.3390/md18080424

Figure 4.

Figure 4

Comparison of amino acid distribution in bioactive peptides from different sources. Bioactive peptides from animal (non-marine) sources have been described in Maestri et al. 2019 [30]. Bioactive peptides from marine organisms are described in this paper. The five main categories of amino acids are as described in the text. Deviation from 100% can be explained by the presence of multifunctional peptides, unusual amino acid residues, etc.