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4Ig-B7-H3, B7-H3, CD276, PSEC0249, UNQ309, PRO352, B7 homolog 3
Human B7-H3 (4Ig), His Tag (B7B-H52E7) is expressed from human 293 cells (HEK293). It contains AA Gly 27 - Thr 461 (Accession # Q5ZPR3-1).

This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 48.5 kDa. The protein migrates as 65-80 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.
The molecular weight by mass spectrometry is 48535 & 48408 Da (Routinely tested).
Human B7-H3 (4Ig), His Tag(B7B-H52E7) was digested with trypsin and characterized by LC-MS/MS peptide mapping, achieving 99.6% sequence coverage (Routinely tested).
chain1: Gly-Ala-Leu-Glu-Val-Gln-Val-Pro-Glu-Asp-Pro-Val-Val-Ala-Leu chain2: Leu-Glu-Val-Gln-Val-Pro-Glu-Asp-Pro-Val-Val-Ala-Leu-Val-Gly
(Routinely tested)
Less than 1.0 EU per μg by the LAL method / rFC method.
>95% as determined by SDS-PAGE.
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.
Contact us for customized product form or formulation.
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
This product is shipped at ambient temperature.
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.