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H-Trp-Arg-OH is a polypeptide that can be found by peptide screening. Peptide screening is a research tool that pools active peptides primarily by immunoassay. Peptide screening can be used for protein interaction, functional analysis, epitope screening, especially in the field of agent research and development[1].

ChEBI: Trp-Arg is a dipeptide formed from L-tryptophan and L-arginine residues. It has a role as a metabolite.

[1] Birnbaum S, et al. Peptide screening. Current Opinion in Biotechnology, 1992, 3(1): 49-54.