Perilipin-2
Perilipin-2 (129-137) is a synthetic peptide fragment derived from the amino acid sequence spanning residues 129 to 137 of the Perilipin-2 protein, a member of the PAT (Perilipin, ADRP, TIP47) family involved in lipid droplet biology. As a functionally relevant segment, this peptide is of significant interest to researchers investigating lipid storage, adipocyte biology, and the regulatory mechanisms governing intracellular lipid metabolism. Its defined sequence enables precise interrogation of protein-protein interactions, post-translational modifications, and signaling pathways associated with lipid droplet dynamics. The availability of this peptide supports advanced studies in cellular biochemistry, molecular biology, and metabolic research, offering a targeted tool for dissecting the roles of Perilipin-2 in various physiological and pathophysiological contexts.
Peptide-protein interaction studies: Researchers utilize the Perilipin-2 (129-137) fragment to investigate the molecular interactions between Perilipin-2 and its binding partners within the lipid droplet microenvironment. By employing this peptide in binding assays, pull-down experiments, or surface plasmon resonance analyses, scientists can delineate the specific regions responsible for mediating protein-protein contacts. This approach facilitates a deeper understanding of how Perilipin-2 orchestrates the recruitment of enzymes, scaffolding proteins, or signaling molecules to lipid droplets, thereby influencing lipid storage and mobilization processes.
Phosphorylation site analysis: The defined sequence of the Perilipin-2 (129-137) peptide makes it a valuable substrate for kinase assays aimed at elucidating phosphorylation events relevant to lipid metabolism. By using this fragment in vitro, researchers can identify kinases capable of modifying Perilipin-2 at specific residues, analyze the kinetics of phosphorylation, and characterize the functional consequences of these modifications. Such studies contribute to mapping regulatory networks that control lipid droplet dynamics and signal transduction pathways in metabolic tissues.
Antibody production and validation: The synthetic peptide corresponding to residues 129-137 of Perilipin-2 serves as an antigen for generating sequence-specific polyclonal or monoclonal antibodies. These antibodies are essential reagents for immunodetection techniques such as Western blotting, immunofluorescence, and immunoprecipitation. By targeting a discrete epitope within the Perilipin-2 protein, antibodies raised against this peptide enable selective detection and quantification of the endogenous protein in diverse biological samples, supporting studies on lipid droplet biology in health and disease.
Cellular localization and imaging studies: Employing the Perilipin-2 (129-137) peptide as a probe or competitive inhibitor in cellular assays allows researchers to examine the subcellular distribution and functional engagement of Perilipin-2. By introducing the peptide into cultured cells or tissue extracts, scientists can disrupt specific interactions or mask epitopes, thereby assessing the impact on lipid droplet formation, size, and protein composition. This approach provides mechanistic insights into the spatial regulation of lipid storage organelles and their adaptation to metabolic cues.
Peptide mapping and mass spectrometry: The defined sequence of the Perilipin-2 (129-137) fragment is advantageous for peptide mapping applications in mass spectrometry-based proteomics. By serving as a reference standard or internal control, the peptide aids in the identification and quantification of Perilipin-2-derived peptides in complex biological samples. This capability is critical for validating protein expression levels, post-translational modifications, and proteolytic processing events, thereby supporting comprehensive analyses of lipid droplet-associated proteomes.
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