HAUS augmin-like complex subunit 3 (154-162)

HAUS augmin-like complex subunit 3 (154-162) is a synthetic peptide fragment derived from the HAUS3 subunit, an integral component of the augmin complex involved in microtubule nucleation and spindle assembly during cell division. The 154-162 amino acid sequence represents a conserved region that may play a critical role in protein-protein interactions within the augmin complex or with other mitotic regulators. As a research tool, this peptide enables the detailed study of augmin-mediated mechanisms, supporting investigations into the molecular basis of mitotic spindle organization and chromosome segregation. Its defined sequence and biochemical relevance make it a valuable resource for researchers exploring the functional architecture of the mitotic machinery and the regulation of cytoskeletal dynamics.

Protein-protein interaction mapping: The HAUS3 (154-162) peptide is frequently utilized in in vitro binding assays to identify and characterize interaction partners of the augmin complex. By serving as a molecular probe, it facilitates the dissection of specific binding domains and interaction motifs, thereby advancing the understanding of augmin's assembly with other spindle components. Such studies are instrumental in elucidating the precise molecular mechanisms underlying spindle formation and stability.

Antibody epitope identification: Researchers employ the HAUS3 (154-162) sequence as an immunogenic peptide to generate or validate site-specific antibodies against the augmin complex. These antibodies are critical for immunodetection applications, including immunoblotting and immunofluorescence, enabling the selective visualization and quantification of HAUS3 subunit localization and expression in cell and tissue samples. The availability of a defined epitope enhances the specificity and reliability of immunoassays targeting the augmin complex.

Phosphorylation and post-translational modification analysis: The peptide fragment corresponding to residues 154-162 of HAUS3 provides a controlled substrate for in vitro kinase assays and mass spectrometric studies focused on post-translational modifications. By enabling the assessment of phosphorylation or other modifications within this conserved region, researchers can investigate regulatory mechanisms that modulate augmin complex activity during cell division. Insights gained from such analyses contribute to a deeper understanding of mitotic progression and its regulation by signaling pathways.

Peptide-based inhibitor screening: The synthetic HAUS3 (154-162) peptide can be leveraged in high-throughput screening assays to identify small molecules or peptides that disrupt critical protein-protein interactions within the augmin complex. By serving as a competitive inhibitor or binding partner, it supports the development of novel research tools for modulating spindle assembly and microtubule organization. This application is particularly valuable for dissecting the functional roles of augmin subunits in mitotic control and for probing the consequences of targeted disruption in experimental systems.

Structural and functional studies: Incorporation of the HAUS3 (154-162) peptide into structural biology workflows, such as NMR spectroscopy or crystallography, provides a means to investigate conformational properties and binding interfaces relevant to augmin function. By analyzing the peptide in isolation or in complex with other spindle assembly factors, researchers can delineate structural determinants that govern augmin-mediated microtubule nucleation. Such studies offer critical insights into the molecular basis of cytoskeletal regulation and contribute to the broader understanding of cell division fidelity.

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