Cartilage intermediate layer protein 1 preproprotein (779-787)

Cartilage intermediate layer protein 1 preproprotein (779-787) is a synthetic peptide fragment derived from the C-terminal region of the cartilage intermediate layer protein 1 (CILP1) precursor. As a peptide compound, this sequence represents a defined segment of a larger extracellular matrix protein implicated in cartilage structure and function. The specific amino acid stretch encompassing residues 779 to 787 enables targeted investigation of protein-protein interactions, post-translational modification sites, and the molecular mechanisms underlying cartilage biology. Due to its precise sequence and biochemical relevance, this peptide serves as a valuable tool for researchers studying the functional domains of CILP1 and the broader context of cartilage homeostasis and degenerative joint disorders.

Epitope mapping: Utilization of the CILP1 (779-787) peptide in epitope mapping studies facilitates the identification of antibody binding sites within the CILP1 protein. By presenting this defined linear sequence to monoclonal or polyclonal antibodies, researchers can pinpoint immunoreactive regions and characterize antigen-antibody interactions. Such mapping is crucial for developing immunoassays, generating specific antibodies, and understanding the immunogenic landscape of cartilage-associated proteins.

Protein-protein interaction studies: The defined peptide segment corresponding to residues 779-787 of CILP1 is instrumental in dissecting molecular interactions between CILP1 and its binding partners. By serving as a probe in binding assays, pull-down experiments, or surface plasmon resonance analyses, the peptide enables elucidation of interaction motifs and structural determinants essential for extracellular matrix assembly, signaling, or protein complex formation within cartilage tissue.

Post-translational modification analysis: Synthetic access to the CILP1 (779-787) peptide allows for systematic investigation of potential post-translational modifications, such as phosphorylation or glycosylation, that may occur within this region of the full-length protein. Researchers can use the peptide as a substrate in in vitro modification assays or as a reference standard in mass spectrometry-based studies, thereby clarifying the regulatory roles of specific residues in cartilage physiology.

Biomarker discovery: The peptide fragment derived from CILP1 can play a role in biomarker research aimed at detecting cartilage degradation or turnover. By incorporating the peptide into immunoassays or mass spectrometry protocols, scientists can monitor the presence or abundance of CILP1-derived fragments in biological samples. Such approaches support the identification and validation of molecular signatures associated with cartilage health, injury, or degenerative changes.

Peptide-based assay development: The defined sequence of CILP1 (779-787) is well suited for the development and optimization of peptide-based assays, including enzyme-linked immunosorbent assays (ELISA), competitive binding assays, or affinity purification protocols. Its use as a calibrator, capture reagent, or competitor enables precise quantification and detection of CILP1-related analytes, supporting a range of biochemical and analytical applications relevant to cartilage research and extracellular matrix studies.

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