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Target Name:

B-Lymphocyte Antigen CD19; B-Lymphocyte Surface Antigen B4; Differentiation Antigen CD19; T-Cell Surface Antigen Leu-12; CD19


Human CD19 protein (NP_001171569.1) (Glu21-Lys291) with C-terminus Human IgG1 Fc tag and Avi tag at the C-terminus is expressed in CHO cells.

Molecular Weight:

The 525 amino acid protein has a predicted molecular weight of 58.4kDa. The protein migrates at approximately 70-80kDa on SDS-PAGE with DTT-reduced conditions.


>95% based on SDS-PAGE under reducing condition


1xPBS buffer, pH7.4, 0.22 µm filtered

Vial Size:

25µg, 100µg

Endotoxin Level:

Not Tested

Protein Concentration:

25µg size is bottled at 0.2mg/mL concentration. 100 µg size is bottled at lot-specific concentration.                                                          

Storage and Handling:

Quick spin the vial after receiving. An unopened vial can be stored at 2-8°C for 2 weeks or at -20°C and below for six months. The protein can be further diluted to 0.1 mg/mL with 0.22 µm filtered PBS buffer. This stock solution should be aliquoted and stored at ≤ -70°C to minimize the freeze/thaw cycles. Carrier proteins such as BSA needs to be added if further dilution is needed.

Human CD19 Protein (C-Fc-Avi)

  • Catalog



    25 µg


    100 µg

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