Fanconi anemia group M protein (201-214)

Fanconi anemia group M protein (201-214) is a synthetic peptide segment corresponding to amino acids 201 through 214 of the human FANCM protein, a crucial component of the Fanconi anemia (FA) DNA repair pathway. As a defined peptide fragment, it serves as a valuable molecular tool for dissecting the structure-function relationships within the FANCM protein and for exploring the broader molecular mechanisms underpinning genome stability. The sequence encompasses a region implicated in protein-protein interactions and may represent a functional motif relevant to the orchestration of DNA damage response processes. Its defined nature and biochemical tractability make it especially suitable for targeted studies in molecular biology, biochemistry, and cellular research settings.

Protein interaction mapping: Researchers employ the 201-214 peptide fragment of FANCM to investigate specific binding interfaces between FANCM and its interaction partners, such as other FA core complex components or DNA repair proteins. By using this peptide in pull-down assays, surface plasmon resonance, or co-immunoprecipitation studies, scientists can delineate the minimal regions necessary for complex formation and assess the contribution of this segment to the overall assembly and function of the DNA repair machinery.

Epitope mapping and antibody development: The defined sequence of this peptide provides a reliable antigen for generating and characterizing antibodies against the FANCM protein. Such antibodies are essential tools for detecting endogenous FANCM in cellular lysates, immunoprecipitation assays, or immunofluorescence microscopy. The peptide enables precise mapping of epitope regions, supporting the development of highly specific immunoreagents for use in basic research and mechanistic studies of FA pathway proteins.

Phosphorylation and post-translational modification studies: The 201-214 region of FANCM may encompass residues susceptible to regulatory post-translational modifications, such as phosphorylation. Synthetic peptides corresponding to this segment are utilized as substrates in kinase assays or as standards in mass spectrometry-based proteomics to identify and quantify modification events. These studies shed light on the dynamic regulatory mechanisms governing FANCM activity and its integration within the DNA damage response network.

Structural and biophysical analysis: The peptide serves as a model system for structural investigations using nuclear magnetic resonance (NMR) spectroscopy, circular dichroism, or molecular modeling approaches. By examining the conformational properties and dynamics of this defined region, researchers gain insights into the local secondary structure, flexibility, and potential disorder-to-order transitions that may influence FANCM's function within the multi-protein FA complex.

Peptide-based inhibitor screening: The 201-214 peptide fragment can be incorporated into high-throughput screening platforms designed to identify small molecules or peptides that disrupt critical protein-protein interactions involving FANCM. By serving as a competitive binding element, it enables the discovery and characterization of novel modulators that may inform the development of research tools for dissecting the FA pathway or for probing the consequences of pathway perturbation in cellular models.

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