Alpha-Klotho 15mg — Vial Spec, Reconstitution Math & COA

Overview of Alpha-Klotho 15mg Physical Specifications

In cell biology and preclinical physiology, the alpha-klotho 15mg mass specification represents a large-format lyophilized cake intended for high-throughput in vitro screens, chronic animal model series, or multi-plate assay protocols. Alpha-Klotho functions structurally as a single-pass transmembrane protein or a circulating cleaved factor containing two internal repeat domains (KL1 and KL2). When synthesized or recombinantly expressed for laboratory research use only, the 15mg unit mass provides sufficient raw material to execute sustained titration studies without introducing lot-to-lot variance midway through a trial.

A standard 15mg vial contains pure, freeze-dried protein stabilized with a low-molar buffering agent (such as sodium phosphate or trehalose matrix) to preserve tertiary structure during lyophylization. Due to the biological complexity and higher molecular weight of full-length or truncated Klotho constructs compared to short oligopeptides, careful reconstitutive handling is required to prevent aggregation, surface adsorption, or mechanical shear. Researchers ordering this mass size generally possess high-volume pipetting systems and automated fluid handling setups suited for stock solution management.

Molecular Structure, Receptor Interaction, and Preclinical Context

Preclinical studies suggest that Alpha-Klotho acts as an essential obligate co-receptor for fibroblast growth factor 23 (FGF23), converting non-selective FGF receptors (FGFR1c, FGFR3c, FGFR4) into high-affinity functional receptors for mineral ion regulation. Beyond its endocrine interactions with FGF23, the soluble form of Klotho exhibits enzymatic glucuronidase/sialidase activity, altering cell-surface ion channels such as TRPV5 and renal sodium-phosphate co-transporters.

In vitro data indicate that exposure to recombinant soluble Klotho attenuates canonical Wnt signaling pathways, suppresses transforming growth factor-beta (TGF-β1) cascades, and upregulates endogenous antioxidant enzyme expression (including superoxide dismutase). In animal models examining musculoskeletal integrity and vascular aging, Klotho administration has demonstrated protective effects against endothelial dysfunction, muscular atrophy, and renal fibrotic progression. Consequently, the compound is heavily utilized within biomedical research focused on metabolic homeostasis, cellular longevity, and strength degradation models.

Catalog Availability and Container Size Options

PX1 Research prioritizes rigorous analytical standards and lot consistency across all distributed compounds. While high-mass formats like 15mg vials are frequently specified in institutional research RFPs for batch automated dispensing, PX1 Research maintains specific catalog items optimized for high stability and solubility, such as specialized recombinant constructs including Alpha-Klotho LR. If a exact 15mg singular vial specification is not directly active on the primary catalog page, laboratory procurement managers can review our comprehensive list of all research peptides or request custom bulk aliquot fills.

When designing high-concentration stock solutions, selecting the appropriate unit mass is critical. Utilizing multiple standardized lower-mass vials or specialized long-range constructs often provides superior freeze-thaw preservation compared to a single large 15mg vessel, as repeated thermal cycling of a reconstituted 15mg container can accelerate protein degradation. Researchers should balance total protocol mass requirements against storage limitations before selecting container dimensions.

Volumetric Reconstitution Calculations for 15mg Vials

Accurate reconstitution of a 15mg lyophilized cake requires calculating precise concentration metrics based on added diluent volume. Researchers should always use sterile bacteriostatic water or an appropriate sterile assay buffer (such as PBS with 0.1% BSA to prevent vessel wall binding). Below are the standard volumetric yield calculations for an alpha-klotho 15mg vial mass:

• 1.0 mL Diluent Volume: Yields a final concentration of 15.0 mg/mL (15.0 µg/µL). • 2.0 mL Diluent Volume: Yields a final concentration of 7.5 mg/mL (7.5 µg/µL). • 3.0 mL Diluent Volume: Yields a final concentration of 5.0 mg/mL (5.0 µg/µL). • 5.0 mL Diluent Volume: Yields a final concentration of 3.0 mg/mL (3.0 µg/µL).

To perform custom concentration math, calculate using the core formula: Concentration (mg/mL) = Mass (mg) / Volume (mL). For fast, error-free conversions across microgram and milligram experimental parameters, investigators should reference the PX1 interactive reconstitution calculator. Never shake or vortex the vial during reconstitution; instead, allow the diluent to run down the side of the glass wall and gently invert or swirl until full dissolution is achieved.

Aliquot Planning and Freeze-Thaw Prevention Strategies

Once a 15mg vial of Alpha-Klotho is fully reconstituted, the master stock solution must be processed immediately into working aliquots to prevent enzymatic or chemical degradation. Repeated freezing and thawing of protein solutions disrupts secondary and tertiary folding structures, causing irreversible aggregation and rendering the compound inactive for sensitive cell culture or binding assays.

Laboratories should aliquot the primary solution into low-binding microcentrifuge tubes in single-use volumes (e.g., 50 µL to 200 µL per tube) based on daily microplate dosing schedules. Working aliquots should be flash-frozen using liquid nitrogen or a dry ice/ethanol bath prior to long-term placement in a sub-zero freezer. If the buffer formulation does not contain carrier proteins, adding 0.1% high-purity bovine serum albumin (BSA) or human serum albumin (HSA) can reduce hydrophobic surface absorption during storage.

Storage Parameters and Stability Guidelines

Proper storage conditions are essential for maintaining the structural integrity of Alpha-Klotho research compounds. The lyophilized powder must be stored in a dry, dark environment at -20°C to -80°C upon receipt. Under these ultra-low temperature conditions, desiccated protein cakes typically remain stable for 12 to 24 months without significant primary sequence breakdown.

Following reconstitution, liquid working aliquots must be stored at -80°C for extended studies (up to 3–6 months) or kept at 2°C to 8°C for short-term active window usage (not exceeding 48 to 72 hours). Reconstitution in plain unbuffered sterile water is recommended only for immediate dilution into functional culture media; long-term storage of reconstituted stocks requires physiological pH-buffered solutions (pH 7.2–7.4) containing preservative agents.

Analytical Quality Control: HPLC, MS, and Endotoxin Standards

Because Alpha-Klotho is frequently deployed in sensitive cellular assays and animal tissue studies, analytical purity is non-negotiable. Substandard synthesis or improper purification can introduce heavy metals, residual solvents, or truncated peptide fragments that skew experimental outcomes. PX1 Research subjects every production lot to rigorous third-party testing in ISO 17025 accredited facilities.

Verification protocols include High-Performance Liquid Chromatography (HPLC) to confirm purity profiles exceeding 98%, and Mass Spectrometry (MS) to verify precise molecular weight matching the theoretical sequence. Crucially for cell culture and preclinical models, endotoxin levels are quantified using Limulus Amebocyte Lysate (LAL) assays, ensuring levels remain below strict thresholds (<0.01 EU/µg). Researchers can access full batch documentation directly via our dedicated COA validation hub.

Comparative Preclinical Profile: Alpha-Klotho vs. Related Biomarkers

When designing protocols evaluating muscle preservation, mitochondrial efficiency, or systemic longevity signaling, investigators often compare Alpha-Klotho against other established research peptides. Understanding structural and functional distinctions enables researchers to select the optimal compound or combined pathway model.

For instance, while Alpha-Klotho targets FGF23 and Wnt modulation pathways, researchers examining myostatin inhibition and hypertrophic signaling often utilize Follistatin-344. Conversely, studies focused on mitochondrial cardiolipin preservation and reactive oxygen species reduction frequently deploy SS-31, whereas intracellular mitochondrial-derived peptide pathways are probed using MOTS-c. Evaluating these distinct target mechanisms allows laboratories to construct robust comparative matrix assays.

Institutional Procurement and Facility Compliance

PX1 Research operates strictly as a USA-based supplier of research-grade compounds for laboratory and educational institutions. All products are manufactured in GMP-compliant facilities and shipped directly from state-of-the-art logistics nodes in California and Arizona. Standard laboratory orders placed Monday through Friday receive same-day dispatch to minimize supply chain latency.

Principal investigators and lab procurement teams establishing large-scale animal models or multi-year screening programs can utilize our dedicated wholesale laboratory program for custom batch allocations, volume discounting, and reserved lot locking. Additional documentation regarding compound handling, assay compatibility, and biochemical pathways can be explored in the PX1 peptides research library.