Biotin-[Glu1]-Gastrin I (human) (phosphorylated)

Biotin-[Glu1]-Gastrin I (human) (phosphorylated)

Biotin-[Glu1]-Gastrin I (human) (phosphorylated)
Biotin-[Glu1]-Gastrin I (human) (phosphorylated)

Biotin-[Glu1]-Gastrin I (human) (phosphorylated)

Biotin-[Glu1]-Gastrin I (human) (phosphorylated)

Biotin-[Glu1]-Gastrin I (human) (phosphorylated) is a modified neuropeptide with the molecular formula C₁₀₇H₁₄₁N₂₂O₃₇PS₂ and molecular weight 2422.53 g/mol. As a phosphorylated, biotin-labeled analog of human Gastrin I, it combines enhanced stability with sensitive detection capabilities, making it indispensable for studying gastrin metabolism, CCK₂ receptor signaling, and developing phospho-specific diagnostic tools.


TECHNICAL SPECIFICATIONS


Item
Specification
Product Name
Biotin-[Glu1]-Gastrin I (human) (phosphorylated)
CAS NO.
\
Appearance
White to off-white lyophilized powder
Molecular Formula
C₁₀₇H₁₄₁N₂₂O₃₇PS₂
Molecular Weight
2422.53 g/mol 
Purity (RP-HPLC)
≥ 98.0%
Solubility

Freely soluble in deionized water (pH 4.0–7.0) or 0.1 M acetic acid; partially soluble in DMSO (≤2 mg/mL) to avoid precipitation.

Endotoxin< 1.0 EU/mg
Biological Activity
Phosphorylated, biotin-labeled analog of human Gastrin I, retaining CCK₂ receptor binding affinity (human CCK₂ receptor Ki: 0.1–1 nM). Phosphorylation at specific residues (e.g., Ser⁴) modulates stability and receptor interaction. Biotin enables detection via streptavidin conjugates .
Storage Conditions
Lyophilized powder: Store at -20°C in a tightly sealed, light-protected container; avoid moisture and repeated freeze-thaw cycles. 
Stock Location
Stock in USA
MOQ
1g


1.MECHANISM OF ACTION

CCK₂ Receptor Activation: Retains high affinity for the cholecystokinin-2 (CCK₂) receptor (human, Ki: 0.1–1 nM), binding to the same site as native gastrin to stimulate gastric acid secretion and mucosal growth via Gq/11-coupled signaling.

Phosphorylation-Mediated Stability: Site-specific phosphorylation (e.g., at serine residues) enhances resistance to proteolytic degradation, prolonging half-life in biological samples.

Biotin-Driven Detection: The N-terminal biotin label binds streptavidin-conjugated probes (e.g., HRP, fluorophores) with ultra-high affinity (Kd ~10⁻¹⁵ M), enabling sensitive detection in ELISA, Western blot, and immunohistochemistry.


    2.PRODUCT INDICATIONS

    Gastrin Metabolism Research: Studying phosphorylation-dependent regulation of gastrin stability, processing, and receptor interaction in human gastric tissues.
    CCK₂ Receptor Pharmacology: Evaluating receptor agonists/antagonists using biotin-labeled gastrin to track binding kinetics and downstream signaling.
    Diagnostic Tool Development: Designing phospho-gastrin-specific assays for clinical samples (e.g., serum, gastric juice) to detect hypergastrinemia or gastrinoma.


    3.CLINICAL EFFICACY OF PRODUCT

    Preclinical Validation:
    Binds human CCK₂ receptors with 80–90% of native gastrin’s affinity (radioligand binding assays).
    Resists degradation in human serum for 24+ hours (vs. 2–4 hours for unmodified gastrin).
    Enables detection of phospho-gastrin in gastric cancer cell lysates at picogram levels (ELISA, LOD: 10 pg/mL).
    Therapeutic Relevance: Supports development of phospho-gastrin biomarkers for early diagnosis of Zollinger-Ellison syndrome and monitoring anti-ulcer therapy efficacy.


    4.DELIVERY & SHIPPING

    We specialize in global logistics for various cosmetic peptides. Your order will be handled with the utmost care, ensuring safe, reliable, and intact delivery.
    Professional and Secure Packaging
    Each bottle of peptide is protected with a special packaging solution to ensure stability and integrity during transportation.
    We can also customize packaging according to customer needs.
    Shipping Methods 
    Main Method: International Air Freight

    We primarily use DHL, FedEx, UPS, and TNT because of their global reliability, speed, and advanced tracking systems. Air freight ensures the fastest transit time and minimizes the impact of environmental factors on the product.

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