Human CD40 is a member of the tumor necrosis factor (TNF) receptor family and is present on all B cells except plasma cells.  CD40 is also found on some epithelial cells, carcinomas and lymphoid dendritic cells.  CD40 plays an important role in B cell activation and the interaction with its ligand CD154 (CD40 Ligand) is essential for isotype switching (3).

Isotype: Murine IgG1

Immunogen: Murine L cells transfectants expressing human CD40

Specificity: Antibody BE-1 recognizes the CD40 molecule of about 44 kd (1, 2).

Functional Application: Binding of cross linked BE-1 will partially activate B cells.


1.  C.L. Law, B. Wormann & T.W. LeBien, (1990) Leukemia 4: 732-738.

2.  Leukocyte Typing IV (W. Knapp, et al, eds.) Oxford University Press, Oxford, (1989) p. 90-91.

3.  T.A. Foy, et al, (1996) Annu Rev Immunol  14:591-617.

4.  M.R. Kuhné , et al, (1997) J Exp Med  186:337-342.

USD $150.00

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Catalog #: 189-820
Form: Pur/PF
Size: 100 µg
Alternate Name: TNFRSF5
Clone: BE-1
Applications: FC, EIA, IP(4)


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