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R5 peptide is one of the repeating peptide sequences that form the protein diatom in Cylindrotheca fusiformis. R5 peptide can be used as a template for the synthesis of Pd (palladium) nanoparticles (NPs). R5 peptide forms complexes with metal ions through the amine groups in its sequence, and the self-assembled structure of the peptide provides a confined spatial environment for the reduction of metal ions and the nucleation of nanoparticles. R5 peptide can be used in the research of biomimetic nanomaterials[1].

[1] Li Q, et al. Biomimetic mineralization based on self-assembling peptides[J]. Chemical Society Reviews, 2023, 52(5): 1549-1590. DOI:10.1039/d2cs00725h