ATP-binding cassette sub-family A member 3 (1686-1694)

ATP-binding cassette sub-family A member 3 (1686-1694) is a synthetic peptide fragment derived from the ABCA3 protein, a critical member of the ATP-binding cassette transporter family. This peptide corresponds to amino acids 1686 through 1694 within the ABCA3 sequence, a region implicated in the protein's functional activity related to phospholipid transport and surfactant metabolism. ABCA3 plays a fundamental role in the biogenesis and maintenance of pulmonary surfactant, making its peptide fragments valuable tools for exploring protein structure-function relationships, post-translational modifications, and protein-protein interactions. Researchers utilize such peptide sequences to dissect the molecular mechanisms underlying ABCA3's activity in both physiological and disease contexts.

Peptide mapping: The 1686-1694 fragment is widely employed in peptide mapping studies to elucidate the structural domains of ABCA3. By analyzing the binding properties and conformational behavior of this sequence, researchers can identify critical motifs essential for the transporter's function. This approach aids in the characterization of domain-specific interactions and contributes to a more nuanced understanding of the protein's architecture, supporting efforts to map functional regions relevant to lipid transport.

Antibody production: The synthetic peptide corresponding to ABCA3 residues 1686-1694 serves as a specific immunogen for generating polyclonal or monoclonal antibodies. These antibodies are instrumental in detecting and quantifying ABCA3 expression in various biological samples through immunoblotting, immunohistochemistry, or ELISA. Targeting a defined epitope allows for high specificity, facilitating the study of ABCA3 localization, expression patterns, and potential post-translational modifications in cellular and tissue contexts.

Protein interaction studies: Researchers utilize this peptide fragment in assays designed to probe protein-protein interactions involving ABCA3. By employing the peptide in pull-down assays, surface plasmon resonance, or other binding studies, it is possible to identify and characterize interacting partners that recognize or modulate the 1686-1694 region. Such investigations provide insights into the regulatory networks that govern ABCA3 function and its integration into broader lipid metabolic pathways.

Epitope mapping: The defined sequence of the 1686-1694 peptide is valuable in epitope mapping applications. Scientists can use the peptide to determine the precise binding sites of antibodies or other ligand molecules targeting ABCA3. This information is crucial for refining antibody specificity, optimizing detection reagents, and advancing the development of molecular probes for research and diagnostic purposes.

Functional assays: The synthetic ABCA3 peptide can be incorporated into functional assays to study the biochemical properties of the transporter. For example, the peptide may be used as a competitive inhibitor or substrate analog in ATPase activity assays or lipid transport experiments, enabling researchers to delineate the contribution of this specific region to the overall activity of ABCA3. Such studies help clarify the mechanistic role of defined sequence motifs within the protein, supporting a deeper understanding of its physiological and biochemical significance.

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