Recombinant rabbit TROP-2 (TACSTD2) extracellular domain expressed in HEK293 cells, supplied as a C-terminal His-tagged, lyophilized protein for assay development and antibody characterization. Quality is verified by SDS-PAGE and SEC-MALS; product is supplied as a 100 μg vial with lyophilized formulation.
- Size: 100 μg.
- Expression system: human 293 cells (HEK293).
- Sequence: Gln 35-Pro 279.
- Tag: C-terminal polyhistidine tag.
- Calculated molecular weight: 29.5 kDa.
- Apparent molecular weight: migrates 40-50 kDa on SDS-PAGE due to glycosylation.
- SEC-MALS: verified molecular weight ~32-42 kDa.
- Purity: >95% by SDS-PAGE; >90% by SEC-MALS.
- Formulation: lyophilized from PBS, pH 7.4, with trehalose as protectant.
- Storage: lyophilized at -20°C or lower; stable long term at -20°C to -70°C; avoid repeated freeze-thaw cycles.