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Phe-Gly-Gly-Gly is a tetrapeptide consisting of L-phenylalanine and three glycine residues. L-phenylalanine is an essential amino acid important for protein synthesis and neurotransmitter production. The three glycine residues contribute to the peptide's flexibility and may aid in various metabolic processes and protein interactions. This peptide, with its unique composition, may be used to study protein structure, function, or to explore the effects of repetitive glycine motifs in peptide chains.
