Junyi JY-SX3 Dual-Dimensional Electrophoresis Tank

Overview

The Junyi JY-SX3 Dual-Dimensional Electrophoresis Tank is an engineered platform for high-resolution two-dimensional polyacrylamide gel electrophoresis (2D-PAGE), a foundational technique in proteomic analysis. It implements orthogonal separation principles: the first dimension employs tube-based isoelectric focusing (IEF) to resolve proteins by isoelectric point (pI), while the second dimension performs SDS-PAGE or urea-PAGE to separate denatured polypeptides by molecular weight. Unlike integrated single-chamber systems, the JY-SX3 physically decouples both dimensions—each operating as an independent electrophoresis unit—thereby eliminating cross-contamination risks, mechanical interference, and operational inflexibility associated with legacy dual-slot designs. Its modular architecture supports sequential IEF and SDS-PAGE without gel transfer between incompatible chambers, ensuring reproducible alignment and minimizing handling-induced artifacts. The system is compatible with standard laboratory power supplies (no high-current requirement), reducing infrastructure dependencies while maintaining thermal stability via integrated water-jacketed cooling.

Key Features

• Modular dual-dimension design: First-dimension IEF tubes (120 mm length, 1.0 mm or 2.0 mm diameter) and second-dimension slab gels (143 × 139 mm active area, 2.0 mm thickness) operate independently—enabling parallel setup, staggered runs, and instrument sharing across workflows.
• Thermal management: Dual-port water circulation interface allows connection to external chillers or recirculating coolers (e.g., Thermo Scientific Neslab RTE-7 or equivalent), maintaining consistent temperature during extended IEF (up to 12–18 h) and high-voltage SDS-PAGE runs.
• Enhanced safety protocol: Lid-integrated microswitch automatically interrupts high-voltage circuitry upon opening—complying with IEC 61010-1 requirements for laboratory electrical equipment safety.
• Reproducible gel fabrication: Includes precision-machined, reusable gel casting apparatus optimized for uniform acrylamide polymerization and minimal bubble formation in both tube and slab formats.
• Optimized buffer capacity: ~2500 mL total reservoir volume ensures stable pH gradients and ion concentration over multi-hour IEF, reducing buffer exhaustion and edge effects.
• Ergonomic accessibility: Front-accessible buffer chambers and tool-free gel tray insertion facilitate rapid setup, staining, and destaining without disassembly.

Sample Compatibility & Compliance

The JY-SX3 accommodates standard IEF tube gels (1.0 mm and 2.0 mm ID) with up to 29 sample wells per tube, supporting common immobilized pH gradient (IPG) strips and carrier ampholyte-based systems. Second-dimension gels accept pre-focused IEF tubes for horizontal or vertical equilibration prior to SDS-PAGE. Compatible with Coomassie Brilliant Blue, silver nitrate, SYPRO Ruby, and fluorescent dyes (e.g., Deep Purple). The system meets general laboratory safety standards under ISO/IEC 17025-accredited environments when operated with validated protocols. While not certified to FDA 21 CFR Part 11 out-of-the-box, its manual operation mode supports full audit-trail documentation required under GLP and GMP-aligned proteomics workflows.

Software & Data Management

As a hardware-only electrophoresis platform, the JY-SX3 does not include embedded firmware or proprietary software. All run parameters—including voltage ramping profiles, current limits, and run duration—are configured externally via connected power supplies (e.g., Bio-Rad PowerPac HC, C.B.S. Scientific EPS-200). Gel imaging and densitometric analysis are performed post-run using third-party platforms such as ImageLab (Bio-Rad), PDQuest (Bio-Rad), or open-source tools like ImageJ with Delta2D plugins. Raw data files (TIFF, PNG, or 16-bit grayscale scans) remain fully interoperable with LIMS and ELN systems via standard file import/export functions.

Applications

• Comparative proteomics: Differential expression profiling of cellular lysates, tissue extracts, or biofluids under disease vs. control conditions.
• Post-translational modification (PTM) mapping: Detection of phosphorylation, glycosylation, or ubiquitination shifts via pI mobility changes in the first dimension.
• Biomarker discovery: High-sensitivity screening of low-abundance serum proteins following albumin/IgG depletion.
• Quality control in recombinant protein production: Assessment of charge heterogeneity, aggregation, and degradation products in therapeutic monoclonal antibodies.
• Method development for 2D-DIGE: Platform validation for internal standard-based fluorescence multiplexing workflows.

FAQ

Can the JY-SX3 be used with IPG strips instead of tube gels?
Yes—the first-dimension module accepts standard 7 cm or 11 cm IPG strips when mounted in compatible holders; tube-based IEF remains the primary configuration.
What power supply specifications are recommended for optimal IEF performance?
A programmable power supply capable of voltage ramping (e.g., 200–3000 V) and current limiting (≤50 mA) is advised; constant-voltage or step-gradient modes yield superior pI resolution.
Is the cooling system compatible with standard laboratory chillers?
Yes—0.5 cm inner-diameter silicone tubing connects directly to most recirculating chillers with barb fittings; flow rate should be maintained at 0.8–1.2 L/min for thermal equilibrium.
Does the system support automated gel staining or destaining?
No—the JY-SX3 is a passive electrophoresis tank; staining/destaining requires external trays and agitation systems (e.g., Labnet HB-1000 or similar orbital shakers).
Are replacement parts (e.g., electrode assemblies, gasket kits) available through Junyi’s international distribution network?
Yes—OEM spare parts including platinum wire electrodes, silicone gaskets, and leveling feet are cataloged under part numbers JY-SX3-EL-PT, JY-SX3-GK-SIL, and JY-SX3-LF-AL, respectively.