TB500 Frag 17-23 10mg (10 vials/kit): Concentrated Actin-Binding Domain for Tissue Repair Research

TB500 Frag 17-23 (Ac-LKKTETQ) is a synthetic acetylated heptapeptide derived directly from the active domain (amino acid residues 17 through 23) of Thymosin Beta-4 ($\text{T}\beta4$). Identified as the essential sequence responsible for actin-binding, cell migration, and tissue repair pathways, this active fragment isolates the primary bioactivity of full-length $\text{T}\beta4$ into a compact, highly focused molecular structure. Sourcing TB500 Frag 17-23 10mg (10 vials/kit) provides academic institutions, biotechnology facilities, and clinical researchers with a standardized, high-purity research kit designed to investigate focal adhesion, cell motility, microvascular growth, and localized extracellular matrix recovery.

In cellular and regenerative biology, the full 43-amino-acid Thymosin Beta-4 protein coordinates cytoskeleton dynamics by sequestering G-actin monomers. Research demonstrates that the short heptapeptide region $\text{Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln}$ contains the fundamental $LKKTETQ$ binding motif necessary to regulate actin polymerization, stimulate cell motility, and promote tissue regeneration. By isolating this functional core, TB500 Frag 17-23 10mg (10 vials/kit) allows researchers to eliminate non-essential structural sequences, enabling precise studies of cell dynamics and wound-healing kinetics in vitro and in vivo.

Maintaining lot-to-lot consistency and structural integrity is critical for quantitative tissue repair assays. The TB500 Frag 17-23 10mg (10 vials/kit) package configuration yields 100mg of total high-purity active material distributed across ten individual 10mg USP Type I borosilicate glass vials. Freeze-dried under sterile vacuum conditions, each vial contains a uniform, highly stable lyophilized powder cake. This multi-vial format allows laboratory personnel to reconstitute only the working stock required for immediate experimental protocols, keeping remaining vials in cold storage and preventing structural degradation caused by repeated freeze-thaw cycles.

Actin Dynamics, Cell Migration Pathways, and Technical Specifications

The primary scientific value of TB500 Frag 17-23 10mg (10 vials/kit) stems from its concentrated interaction with the cell cytoskeleton and migratory cascades:

• Actin Cytoskeleton Modulation: Binds G-actin monomers to regulate actin filament assembly, facilitating lamellipodia formation and cell locomotion during tissue remodeling.

• Accelerated Cell Migration: Drives the migration of keratinocytes, endothelial cells, and myoblasts to wounded tissue sites without inducing cellular hypertrophy.

• Angiogenesis & Tissue Regeneration: Stimulates capillary sprout formation and extracellular matrix deposition, accelerating dermal, tendon, and cardiac tissue repair in preclinical models.

• Targeted Biological Motif: Isolates the active $LKKTETQ$ functional domain of Thymosin Beta-4, offering a focused molecular probe with reduced molecular weight.

• Ultra-High Chemical Purity ($\ge$99.0%): Synthesized via automated Solid-Phase Peptide Synthesis (SPPS) and purified using preparative High-Performance Liquid Chromatography (HPLC) to guarantee complete removal of synthesis artifacts.

Reconstitution Guidelines, Laboratory Storage Standards, and Quality Protocols

Achieving reproducible, publication-grade results when working with TB500 Frag 17-23 10mg (10 vials/kit) requires strict adherence to standardized aseptic laboratory preparation and climate-controlled storage protocols.

Perform all reconstitution procedures inside a certified Class II Biosafety Cabinet:

1. Temperature Equilibration: Allow the frozen TB500 Frag 17-23 10mg (10 vials/kit) vial to adjust to ambient room temperature prior to solvent introduction to eliminate condensation inside the glass container.

2. Septum Sanitization: Remove the protective plastic flip-cap and thoroughly wipe the synthetic rubber stopper with a fresh 70% isopropyl alcohol pad. Allow the surface to dry completely.

3. Slow Diluent Addition: Using a sterile syringe equipped with a fine-gauge needle, draw the required volume of Bacteriostatic Water (0.9% benzyl alcohol), Sterile Normal Saline (0.9% NaCl), or Sterile Water for Injection. Incline the vial at a 45-degree angle and direct the liquid stream down the inner glass wall so it trickles gently over the lyophilized cake.

4. Gentle Hydration: Allow the diluent to fully hydrate the powder cake for 2 minutes. Gently roll the vial between your palms or swirl in smooth circular motions until clear. Never vortex or shake vigorously, as turbulent agitation can shear peptide bonds and induce protein foaming.

5. Micro-Aliquot Strategy: For multi-week testing protocols, divide the reconstituted solution into sterile, single-use microcentrifuge tubes under aseptic conditions to prevent atmospheric oxidation and eliminate repeated freeze-thaw cycles.

Batch Quality Documentation & Traceability: Every production lot of TB500 Frag 17-23 10mg (10 vials/kit) undergoes third-party analytical testing. High-Performance Liquid Chromatography (HPLC) chromatograms confirm individual component purity exceeding 99.0%, while Electrospray Ionization Mass Spectrometry (ESI-MS) confirms precise theoretical molecular mass. Each shipment includes a batch-specific Certificate of Analysis (COA) documenting chemical purity, residual solvent analysis, heavy metal screens, and bacterial endotoxin levels (<0.05 EU/mg) to satisfy institutional compliance requirements.

Strict Regulatory & Research Compliance Statement: TB500 Frag 17-23 10mg (10 vials/kit) is produced, packaged, and distributed exclusively for in vitro laboratory research, academic experimentation, chemical synthesis, and preclinical research. TB500 Frag 17-23 10mg (10 vials/kit) is strictly not intended, formulated, or approved for human or animal consumption, therapeutic medical treatment, clinical diagnostic work, or cosmetic applications. All handling must be conducted by certified research personnel operating within equipped laboratory facilities in compliance with OSHA workplace safety regulations and institutional biosafety protocols.