Carcinoembryonic antigen-related cell adhesion molecule 5 (99-111)

Carcinoembryonic antigen-related cell adhesion molecule 5 (99-111) is a synthetic peptide fragment derived from the CEACAM5 protein, a member of the carcinoembryonic antigen (CEA) family. Recognized for its role in cell adhesion and intercellular signaling, this peptide encompasses a specific sequence within the larger CEACAM5 molecule, which is widely studied in the context of cellular communication, tumor biology, and immune interactions. Its defined structure and biochemical relevance make it an important tool for probing the molecular mechanisms underpinning cell adhesion processes and the modulation of cellular environments in both normal and pathological states.

Peptide mapping: Researchers frequently employ the 99-111 fragment of CEACAM5 in peptide mapping studies to delineate epitope regions and functional domains within the parent protein. By examining the interactions of this peptide with antibodies or cellular receptors, scientists can identify binding motifs and structure-function relationships that are critical for understanding how CEACAM5 participates in cell adhesion and signaling events. Such mapping efforts contribute to the broader characterization of protein surfaces and the identification of candidate regions for further structural or functional analysis.

Antibody specificity assessment: The defined sequence of this synthetic peptide enables its use as a standard in immunological assays designed to evaluate the specificity and affinity of antibodies targeting CEACAM5. By serving as a reference antigen in ELISA, Western blot, or immunoprecipitation protocols, the peptide allows researchers to validate antibody performance, distinguish between cross-reactivity and true antigen recognition, and optimize assay conditions for reliable detection of CEACAM5-related targets in biological samples.

Cellular interaction studies: The 99-111 peptide segment is valuable in dissecting the molecular basis of cell adhesion and intercellular communication mediated by CEACAM5. In vitro assays utilizing this peptide can help elucidate how specific extracellular regions of the protein contribute to homophilic or heterophilic binding, signal transduction, and the modulation of cellular behavior. Such studies are instrumental in advancing the understanding of adhesion molecule dynamics and their implications for tissue organization, immune surveillance, and pathological progression.

Peptide-based assay development: The unique biochemical features of the CEACAM5 (99-111) peptide make it a suitable component for the design and optimization of peptide-based assays. Its use in multiplexed detection formats or competitive binding studies supports the development of sensitive and specific analytical tools for monitoring CEACAM5 expression, mapping protein-protein interactions, or screening for potential modulators of adhesion molecule function. By incorporating this peptide into assay platforms, researchers can achieve higher resolution in detecting subtle changes in molecular interactions.

Structure-activity relationship analysis: The defined amino acid composition of the 99-111 fragment enables detailed investigations into the structural determinants of CEACAM5 function. Through alanine scanning, mutagenesis, or conformational studies, scientists can assess how individual residues within this region contribute to the overall activity and binding properties of the protein. These insights are essential for elucidating the mechanistic basis of CEACAM5-mediated adhesion and for guiding the rational design of peptide analogs or inhibitors for research applications.

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