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Q: What does “carrier-free” mean?

Carrier-free proteins contain no stabilizers (e.g., BSA), reducing interference in sensitive assays and enabling precise mass-based dosing. Ideal for SPR, BLI, and cell-based functional studies.

Q: Which expression system should I choose?

HEK293/CHO: Native folding, glycosylation, and disulfide bonds — ideal for receptor-binding and functional studies.E. coli: High yield and cost-effective, best for structural screening.Insect/Yeast: Balanced PTMs with good scalability.

Q: What endotoxin level is recommended for immune cell assays?

≤0.1 EU/µg is the standard for immune cell culture, T-cell expansion, and in vivo studies. Every lot ships with LAL-verified endotoxin data on the CoA.

Q: How to reconstitute lyophilized proteins?

Use sterile, endotoxin-free buffer. Gently swirl — avoid vortexing. Aliquot into single-use volumes and store at -80°C to prevent freeze-thaw damage.

Q: Are these proteins RUO or GMP-grade?

Unless explicitly labeled, all products are Research Use Only (RUO). For GMP-grade requirements, contact our team for custom manufacturing options.

Reactivos y productos de investigación

Explore 35,000+ research-grade reagents from abinScience — recombinant proteins, antibodies, and assay kits for life science research. All products manufactured in-house under ISO 9001 & ISO 13485 quality systems with verified bioactivity, ≥95% purity, and ≤0.1 EU/µg endotoxin. Global cold-chain shipping available.RUO

Por qué los investigadores eligen abinScience

Más de 35.000 productos en catálogoComprehensive portfolio covering proteins, antibodies, and kits for diverse research applications.

Fabricante original In-house development from gene synthesis to final QC — full traceability.

ISO 9001 & ISO 13485 Dual ISO certification ensures consistent manufacturing quality and regulatory readiness.

QC verificado por actividad

Every lot tested for bioactivity, purity (≥95%), and endotoxin (≤0.1 EU/µg)

Envío global con cadena de frío Worldwide delivery with dry-ice packaging and regional distributor support.

Documentos y Datos de QC

Download Certificate of Analysis (CoA), SDS-PAGE gels, SEC-HPLC chromatograms, and reconstitution protocols on each product page. Todos los datos de control de calidad (QC) son específicos del lote y están archivados para garantizar la trazabilidad.

Preguntas frecuentes

¿Qué significa “libre de portador”?

Carrier-free proteins contain no stabilizers (e.g., BSA), reducing interference in sensitive assays and enabling precise mass-based dosing. Ideal for SPR, BLI, and cell-based functional studies.

¿Qué sistema de expresión debo elegir?

HEK293/CHO: Native folding, glycosylation, and disulfide bonds — ideal for receptor-binding and functional studies.
E. coli: High yield and cost-effective, best for structural screening.
Insect/Yeast: Balanced PTMs with good scalability.

¿Qué nivel de endotoxina se recomienda para los ensayos con células inmunitarias?

≤0.1 EU/µg is the standard for immune cell culture, T-cell expansion, and in vivo studies. Every lot ships with LAL-verified endotoxin data on the CoA.

¿Cómo reconstituir proteínas liofilizadas?

Use sterile, endotoxin-free buffer. Gently swirl — avoid vortexing. Aliquot into single-use volumes and store at -80°C to prevent freeze-thaw damage.

¿Estas proteínas son de calidad RUO o GMP?

Unless explicitly labeled, all products are Research Use Only (RUO). For GMP-grade requirements, contact our team for custom manufacturing options.

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