Survivin-3A (96-104)

Survivin-3A (96-104) is a synthetic peptide derivative corresponding to amino acids 96 through 104 of the human survivin protein, with three alanine substitutions at key phosphorylation sites. As a member of the inhibitor of apoptosis (IAP) protein family, survivin plays a crucial role in cell division regulation and apoptosis inhibition, making it a significant focus in cancer biology and cell signaling research. The modified Survivin-3A (96-104) peptide is designed to investigate the functional consequences of phosphorylation site mutations and to serve as a valuable molecular tool in studies exploring survivin's role in cellular processes and protein-protein interactions.

Peptide functional studies: Survivin-3A (96-104) is widely utilized in research to dissect the impact of specific phosphorylation events on survivin's biological activity. By substituting serine or threonine residues with alanine at phosphorylation sites, researchers can evaluate how phosphorylation modulates survivin's anti-apoptotic functions, its interaction with mitotic regulators, and its stability during cell cycle progression. This peptide enables precise investigation of post-translational modifications, facilitating a deeper understanding of survivin's molecular mechanisms.

Signal transduction research: The peptide serves as a critical probe in elucidating signaling pathways that converge on survivin, particularly those associated with cell survival and mitotic control. By employing Survivin-3A (96-104) in kinase assays or cellular models, scientists can study the downstream effects of phosphorylation-deficient survivin, providing insight into the regulation of apoptosis and mitosis. Such research is instrumental in mapping the complex networks governing cell fate decisions.

Protein-protein interaction assays: The altered sequence of Survivin-3A (96-104) makes it an effective tool for examining how phosphorylation status influences survivin's binding affinity to key partners, such as components of the chromosomal passenger complex or other IAP family members. Utilizing this peptide in pull-down experiments, surface plasmon resonance, or co-immunoprecipitation assays allows for quantitative and qualitative analysis of interaction dynamics, contributing to the identification of critical binding interfaces.

Immunological studies: As a defined epitope, Survivin-3A (96-104) is employed in the development and validation of antibodies that specifically recognize phosphorylated or non-phosphorylated forms of survivin. Peptide-based immunoassays, including ELISA and peptide arrays, benefit from the use of this sequence in distinguishing antibody specificity, supporting the creation of high-quality reagents for survivin detection in research samples.

Peptide synthesis and quality control: The sequence and modifications present in Survivin-3A (96-104) provide a robust standard for evaluating peptide synthesis protocols and analytical methodologies. Its defined structure is well-suited for use as a reference material in chromatographic, mass spectrometric, or spectroscopic analyses, aiding in method validation and optimization for peptide-based research workflows. Through these applications, the peptide contributes to advancements in biochemical assay development and the refinement of peptide production techniques.

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