Peroxiredoxin-5, mitochondrial (163-172)

Peroxiredoxin-5, mitochondrial (163-172) is a synthetic peptide fragment derived from the human mitochondrial peroxiredoxin-5 protein, encompassing residues 163 to 172. As a segment of the antioxidant enzyme family, this peptide represents a functionally significant region implicated in cellular redox regulation within mitochondria. Researchers value such peptide fragments for their ability to model specific protein domains, enabling detailed studies of structure-function relationships and the molecular mechanisms underlying oxidative stress responses. The precise sequence and mitochondrial origin of this peptide make it particularly relevant for experimental approaches aimed at dissecting the roles of peroxiredoxins in cellular homeostasis and signaling.

Peptide mapping: As a defined fragment of peroxiredoxin-5, this peptide serves as a valuable standard in peptide mapping and mass spectrometry-based proteomic workflows. It enables researchers to confirm protein identity, assess post-translational modifications, and validate tryptic digestion efficiency. By providing a reference for the mitochondrial peroxiredoxin-5 region, the peptide supports the development of robust analytical methods for characterizing mitochondrial proteomes and monitoring protein processing events.

Protein-protein interaction studies: The 163-172 sequence of peroxiredoxin-5 is suitable for exploring interaction motifs that mediate binding with partner proteins or regulatory factors. Synthetic peptides corresponding to such regions can be employed in pull-down assays, surface plasmon resonance, or isothermal titration calorimetry to elucidate binding affinities and interaction dynamics. These studies are essential for mapping interaction networks that govern mitochondrial redox signaling and enzyme regulation.

Antibody production and epitope mapping: The defined sequence of this peptide fragment makes it an ideal immunogen for generating sequence-specific antibodies against peroxiredoxin-5. Antibodies raised against the 163-172 region can be used in immunoblotting, immunoprecipitation, or immunofluorescence applications to detect and quantify the native protein in complex biological samples. Furthermore, the peptide facilitates epitope mapping studies, enabling the identification of antibody binding sites and supporting the development of highly specific immunoreagents.

Functional assays and mechanistic studies: As a representative segment of the peroxiredoxin-5 enzyme, this peptide can be incorporated into in vitro functional assays to investigate its role in redox regulation and oxidative stress response. Researchers can use the peptide to probe the contribution of the 163-172 region to the enzyme's catalytic activity, substrate recognition, or susceptibility to oxidative modifications. Such studies provide mechanistic insights into mitochondrial antioxidant defenses and the structural determinants of peroxiredoxin function.

Peptide-based assay development: The unique biochemical properties of the peroxiredoxin-5 (163-172) fragment support its use in the design of custom assays for high-throughput screening or quantitative analysis. The peptide can act as a calibrator, substrate analog, or competitor in assays that monitor enzyme kinetics, inhibitor efficacy, or mitochondrial redox status. Its defined sequence and mitochondrial specificity enable the development of targeted analytical platforms for investigating mitochondrial function and the impact of oxidative stress in cellular models.

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