[Glu1]-Fibrinopeptide B is derived from fibrinopeptide B amino acid residues 1-14. Human fibrinopeptide B (hFpB), a thrombin-derived proteolytic cleavage product of the fibrinogen B beta-chain, to stimulate neutrophils (PMN), monocytes, and fibroblasts.
CAT No: R1122
[Glu1]-Fibrinopeptide B is a synthetic peptide derived from the N-terminal region of the human fibrinogen beta chain, featuring a glutamic acid residue at the first position. As a well-characterized peptide fragment, it plays a significant role in biochemical research focused on blood coagulation, proteolytic processing, and peptide-mass spectrometry calibration. Its defined sequence and physicochemical properties make it a valuable tool for studies involving fibrinogen cleavage, protease substrate specificity, and the development of analytical methodologies. Due to its structural fidelity to the native sequence, [Glu1]-Fibrinopeptide B is widely utilized in a variety of laboratory settings spanning protein chemistry, analytical biochemistry, and proteomics.
Proteomics standardization: In mass spectrometry-based proteomics, [Glu1]-Fibrinopeptide B serves as a robust calibration and quality control standard. Its precise amino acid composition and well-documented fragmentation pattern make it an ideal reference for instrument tuning, retention time alignment, and quantitation accuracy. Researchers frequently employ this peptide to monitor instrument performance, optimize peptide identification workflows, and ensure reproducibility in large-scale protein analysis experiments.
Enzymatic substrate studies: As a substrate mimicking the natural cleavage product of fibrinogen by thrombin, this peptide is instrumental in characterizing the specificity and kinetics of serine proteases involved in coagulation. By providing a defined sequence context, it enables detailed kinetic assays, inhibitor screening, and mechanistic investigations of thrombin and related enzymes. Such studies contribute to a deeper understanding of proteolytic regulation in hemostasis and broader protease biology.
Peptide synthesis validation: [Glu1]-Fibrinopeptide B is frequently used as a benchmark in peptide synthesis and purification protocols. Its well-established sequence and analytical properties allow researchers to validate synthetic strategies, optimize purification methods, and assess chromatographic performance. The peptide's consistent behavior under various analytical conditions makes it a preferred choice for method development and troubleshooting in peptide chemistry laboratories.
Protein interaction research: The peptide is also valuable for probing interactions between fibrinogen-derived sequences and binding partners, such as receptors or antibodies. By providing a defined epitope, it facilitates studies on molecular recognition, binding affinity, and specificity, supporting the development of assays for biomolecular interaction analysis. Insights gained from such experiments inform the design of diagnostic reagents and contribute to fundamental research on protein-protein interactions.
Analytical method development: In addition to its role in proteomics, [Glu1]-Fibrinopeptide B is utilized in the development and validation of analytical techniques such as high-performance liquid chromatography (HPLC) and capillary electrophoresis. Its reproducible chromatographic and electrophoretic properties make it a reliable test analyte for evaluating separation efficiency, detection sensitivity, and overall method robustness. This application is particularly valuable for laboratories establishing new platforms for peptide analysis or quality control.
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