Protein SSX4 (41-60)

Protein SSX4 (41-60) is a synthetic peptide segment derived from the SSX4 protein, encompassing amino acid residues 41 to 60. As a defined peptide fragment, it represents a functionally relevant region of the SSX4 protein, which is a member of the synovial sarcoma, X breakpoint (SSX) family involved in various cellular processes, including transcriptional regulation and chromatin remodeling. Researchers utilize such peptide sequences to investigate protein structure-function relationships, protein-protein interactions, and the immunological properties of SSX4, which is notable for its expression in certain tumor types and testicular tissue. The precise definition of this peptide region enables detailed studies into the molecular mechanisms by which SSX4 influences cellular pathways and contributes to disease-related phenotypes.

Epitope mapping: The 41-60 amino acid region of SSX4 serves as a valuable tool for identifying and characterizing immunogenic epitopes within the full-length protein. By employing this peptide in immunological assays, researchers can delineate antibody binding sites and T-cell epitopes, advancing the understanding of immune recognition associated with SSX4. Such studies are particularly relevant in the context of tumor immunology, where SSX4-derived peptides may play a role in immune surveillance and antigen presentation.

Protein interaction studies: Synthetic peptides corresponding to defined regions of proteins are commonly used to probe protein-protein interactions. The SSX4 (41-60) peptide can be employed in pull-down assays, affinity chromatography, or surface plasmon resonance experiments to elucidate binding partners that interact with this segment. These approaches facilitate the identification of cellular proteins or nucleic acids that specifically associate with the SSX4 41-60 region, thereby clarifying its functional role within larger protein complexes or regulatory networks.

Antibody production: The defined sequence of the SSX4 (41-60) peptide makes it an ideal immunogen for generating sequence-specific polyclonal or monoclonal antibodies. By immunizing animals with this peptide, researchers can obtain antibodies that selectively recognize the corresponding epitope on the native SSX4 protein. These antibodies are essential tools for applications such as Western blotting, immunoprecipitation, immunohistochemistry, and other analytical methods aimed at detecting or quantifying SSX4 expression patterns in various biological samples.

Structural and conformational analysis: Employing the SSX4 (41-60) peptide in biophysical studies allows for in-depth investigation of its secondary structure, folding properties, and conformational dynamics. Techniques such as circular dichroism spectroscopy, nuclear magnetic resonance, and X-ray crystallography can be used to characterize the peptide's structural features in isolation or in complex with binding partners. Insights gained from these analyses contribute to a deeper understanding of how specific SSX4 regions adopt functional conformations that mediate their biological activities.

Functional assays: The peptide fragment corresponding to residues 41-60 of SSX4 can be incorporated into cell-based or in vitro functional assays to assess its influence on signaling pathways, transcriptional activity, or cellular localization. By introducing the peptide into experimental systems, scientists can dissect the contribution of this specific region to the overall function of SSX4, identify regulatory motifs, or evaluate its impact on downstream molecular events. Such applications are instrumental in unraveling the mechanistic basis of SSX4's involvement in cellular physiology and disease processes.

1. Low bone turnover and low BMD in Down syndrome: effect of intermittent PTH treatment

2. Tachykinin-related peptides modulate immune-gene expression in the mealworm beetle Tenebrio molitor L

3. The effect of sex on immune responses to a homocitrullinated peptide in the DR4-transgenic mouse model of Rheumatoid Arthritis

4. Genetic, cellular, and structural characterization of the membrane potential-dependent cell-penetrating peptide translocation pore

5. Immune-awakening Saccharomyces-inspired nanocarrier for oral target delivery to lymph and tumors