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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.

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 catálogo Comprehensive 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 con actividad verificada 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 & 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 QC son específicos del lote y están archivados para 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 ensayos de células inmunes?

≤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 RUO o de grado 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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