Alpha Klotho LR refers to high-purity, soluble recombinant Alpha Klotho variants evaluated in preclinical research models to investigate cellular senescence, renal homeostasis, and growth factor signaling pathways. Because large recombinant proteins are vulnerable to thermal denaturation and structural degradation during transport, maintaining a strict cold chain shipping process is critical for preserving target bioactivity in laboratory experiments.
Alpha Klotho LR refers to high-purity, soluble recombinant Alpha Klotho variants evaluated in preclinical research models to investigate cellular senescence, renal homeostasis, and growth factor signaling pathways. Because large recombinant proteins are vulnerable to thermal denaturation and structural degradation during transport, maintaining a strict cold chain shipping process is critical for preserving target bioactivity in laboratory experiments.
Alpha Klotho is a transmembrane and circulating protein originally identified for its role in modulating the rate of systemic aging in preclinical rodent models. The variant designated as alpha klotho lr (soluble or long-range recombinant isoform) represents the extracellular domain of the protein, which can be shed or synthesized independently to act as a systemic humoral factor. In vitro assays demonstrate that soluble Alpha Klotho interacts directly with cell-surface receptors and circulating signaling molecules, serving as a primary node in mineral homeostasis, fibroblast growth factor (FGF) signaling, and antioxidant pathway activation.
In laboratory research, alpha klotho lr is primarily studied to map its interactions with receptor complexes across renal, cardiovascular, and central nervous system tissue cultures. Because full-length and truncated recombinant isoforms possess complex tertiary structures, maintaining structural integrity from synthesis through reconstituted laboratory application requires rigorous analytical validation and controlled logistics protocols.
Recombinant proteins like alpha klotho lr exhibit heightened sensitivity to temperature fluctuations compared to smaller, synthetic short-chain peptides. Uncontrolled ambient temperatures during shipping can trigger peptide bond cleavage, aggregation, or partial unfolding of critical binding domains. To mitigate these degradation kinetics, PX1 Research implements temperature-controlled packaging and rapid logistics fulfillment.
All shipments originate from our domestic distribution hubs located in California and Arizona. Orders placed before daily cutoffs Monday through Friday are dispatched same-day under specialized thermal insulation with frozen gel ice packs or dry ice media depending on destination ambient forecasts. This cold chain protocol preserves the structural stability of the lyophilized matrix, ensuring that research institutions receive material compliant with baseline analytical specifications.
When designing preclinical protocols focused on cellular longevity, senescence, and metabolic stress, investigators often evaluate alpha klotho lr alongside other targeted compounds. While soluble Klotho functions as a broad endocrine modulator and co-receptor for FGF23, distinct synthetic peptides target complementary downstream cellular pathways.
For example, researchers exploring telomere maintenance and genomic stability frequently utilize epitalon to examine telomerase activity in cell cultures. Conversely, studies targeting the selective clearance of senescent cell populations utilize targeted senolytic agents like foxo4-dri to disrupt p53-FOXO4 binding interactions. Additionally, investigators evaluating mitochondrial bioenergetics and cardiolipin protection incorporate ss-31 into cellular injury models. Combining or comparing alpha klotho lr with these distinct agents allows laboratory teams to isolate specific endocrine versus mitochondrial mechanisms in gerontological research.
To ensure reliable experimental outcomes, PX1 Research subjects every synthesis lot of alpha klotho lr to rigorous analytical verification. Institutional purchasing decisions rely on transparent laboratory testing rather than generalized claims. Below is the comparative specification benchmark maintained for all research-grade offerings available through our research peptides catalog.
• Purity Verification: ≥95% purity determined via Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC). • Molecular Identity: Mass Spectrometry (ESI-MS / MALDI-TOF) confirmation of precise molecular weight. • Endotoxin Testing: Quantified via Limulus Amebocyte Lysate (LAL) assay (typically <0.1 EU/µg) to prevent false-positive inflammatory responses in cell culture. • Batch Traceability: Individual lot numbers matched directly to downloadable, third-party Certificate of Analysis (COA) documents. • Manufacturing Origin: Synthesized and processed in USA-based, GMP-compliant facilities operating under ISO 17025 accredited quality management systems. • Logistics Fulfillment: Ships same-day (Monday–Friday) from CA and AZ fulfillment centers utilizing cold chain thermal packaging.
Preclinical studies indicate that alpha klotho lr functions through dual mechanisms: as an essential obligate co-receptor for Fibroblast Growth Factor 23 (FGF23) and as an independent enzymatic or humoral signal. As a co-receptor, Klotho binds to FGFR1c, FGFR3c, and FGFR4, significantly increasing the affinity of these receptors for FGF23. This complex regulates phosphate transport and vitamin D biosynthesis in renal tubular cell models.
Independent of FGF23, in vitro research demonstrates that soluble alpha klotho lr modulates several key signaling cascades. It exerts inhibitory effects on the Wnt/β-catenin signaling pathway, which is implicated in cellular senescence and tissue fibrosis. Furthermore, Klotho exposure in rodent tissue models has been shown to attenuate insulin and IGF-1 receptor autophosphorylation, upregulating manganese superoxide dismutase (MnSOD) and enhancing cellular resistance to oxidative stress.
Proper reconstitution technique is essential to maintain the bioactivity of lyophilized alpha klotho lr. Lyophilized powders should be allowed to equilibrate to room temperature inside a desiccated environment prior to opening the vial, reducing moisture condensation that could accelerate hydrolysis.
Reconstitution should be performed using sterile, deionized laboratory-grade water or sterile phosphate-buffered saline (PBS, pH 7.4). For long-term stability in cell culture applications, adding a carrier protein such as 0.1% Bovine Serum Albumin (BSA) or Human Serum Albumin (HSA) is recommended to prevent non-specific adsorption of the protein to plastic microcentrifuge tubes or pipette tips. Gentle swirling or inversion is recommended; vigorous vortexing must be avoided to prevent mechanical shear stress and protein foaming.
To maximize shelf life and prevent loss of activity, laboratory staff must strictly manage storage conditions for both lyophilized and reconstituted alpha klotho lr. Detailed storage protocols are documented in our centralized research library hub.
• Lyophilized Storage: Store at -20°C to -80°C upon receipt. Under desiccated sub-zero conditions, the lyophilized protein remains stable for up to 24 months. • Reconstituted Stock Storage: Reconstituted stock solutions should be aliquoted into single-use microcentrifuge tubes to prevent repeated freeze-thaw cycles. Stored at -80°C, working aliquots retain stability for several months. • Working Solution Handling: Reconstituted samples kept at 4°C should be utilized within 2 to 7 days depending on the presence of carrier proteins and bacteriostatic agents.
The molecular interactions of alpha klotho lr extend across multiple cell-surface microdomains. In cell culture models, the protein exhibits sialidase activity, modifying the glycan chains of ion channels such as TRPV5 and ROMK1. This enzymatic activity prevents channel endocytosis, maintaining functional ion transport across membrane barriers in vitro.
Additionally, preclinical studies suggest that soluble Klotho interacts with Transforming Growth Factor-beta (TGF-β) receptor complexes, blunting TGF-β1-induced epithelial-to-mesenchymal transition (EMT). This pathway is a primary focus for researchers investigating renal fibrosis models, vascular calcification assays, and neuroprotective signaling networks.
For universities, biotechnology firms, and contract research organizations requiring large-scale assay development, supply chain consistency is critical. PX1 Research provides institutional tiering and customized production options for high-volume inquiries via our dedicated wholesale portal.
Bulk orders undergo identical analytical verification as standard catalog units. Every lot is verified via third-party RP-HPLC and mass spectrometry to ensure batch-to-batch reproducibility across longitudinal studies. Institutional accounts benefit from dedicated logistical coordination to ensure cold chain compliance across multi-site laboratory deployments.
What is alpha klotho lr?
Alpha klotho lr refers to soluble recombinant long-range Alpha Klotho protein, a research compound used in laboratory assays to study cellular aging, renal signaling, antioxidant response pathways, and FGF23 co-receptor kinetics.
Why is cold chain shipping required for alpha klotho lr?
Recombinant proteins like alpha klotho lr are structurally sensitive to ambient temperature changes. Cold chain shipping utilizing thermal packaging and frozen coolants prevents thermal denaturation, aggregation, and enzymatic degradation during transport.
What purity level is guaranteed for PX1 Research alpha klotho lr?
PX1 Research provides alpha klotho lr verified at ≥95% purity via Reverse-Phase High-Performance Liquid Chromatography (RP-HPLC) and confirmed by mass spectrometry (MS).
Where does PX1 Research ship alpha klotho lr from?
All orders ship directly from domestic fulfillment facilities in California and Arizona. Orders placed Monday through Friday before cut-off times are processed and shipped same-day.
How should lyophilized alpha klotho lr be stored upon arrival?
Upon arrival, lyophilized alpha klotho lr should be stored immediately at -20°C or -80°C in a desiccated environment to maintain long-term peptide stability.
What buffer should be used to reconstitute alpha klotho lr for cell culture assays?
Alpha klotho lr is typically reconstituted using sterile phosphate-buffered saline (PBS, pH 7.4) or sterile water, often supplemented with 0.1% BSA or HSA to prevent non-specific plastic adsorption.
How can I access the COA for my lot of alpha klotho lr?
Third-party Certificates of Analysis (COAs) detailing RP-HPLC chromatograms, mass spectrometry results, and endotoxin levels are available directly on the PX1 Research website matching your product lot number.
Is alpha klotho lr suitable for human administration?
No. Alpha klotho lr is strictly supplied as a research-grade chemical compound intended solely for in vitro laboratory research and preclinical animal studies. It is not for human or veterinary medical use.
What is the endotoxin threshold for research-grade alpha klotho lr?
PX1 Research tests every lot for endotoxins using LAL assays, verifying levels remain under <0.1 EU/µg (or <0.01 EU/µg where specified) to ensure suitability for sensitive cell culture experiments.
Can bulk quantities of alpha klotho lr be ordered for ongoing laboratory projects?
Yes, high-volume institutional sourcing and lot reservation options are available through the PX1 Research wholesale portal with full lot traceability and matching COA validation.
All products are sold strictly for laboratory and research use only. Not for human or veterinary use, diagnosis, treatment or consumption. Statements have not been evaluated by the FDA.