CD38 Antibody (HB7)


Flow Cytometry: CD38 Antibody (HB7) [NBP2-52696] - Flow Cytometry: [NBP2-52647] - Flow cytometry using anti-CD38 antibody HB7. Human lymphocytes were stained with an isotype control (panel A) or the rabbit-chimeric more

Product Details

Reactivity HuSpecies Glossary
Applications WB, Flow, CyTOF-ready
1 mg/ml

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CD38 Antibody (HB7) Summary

Additional Information
Recombinant Monoclonal Antibody
This CD38 antibody (HB7) was developed against viable cells (1 x 10^7) of the human cell line, BJAB (Human Burkitt lymphoma B cell line), which was were injected intraperitoneally into 8-week-old BALB/c mice.
This antibody binds to an epitope between amino acids 273-285 of human CD38, an approximately 45 kDa type II transmembrane protein, expressed on essentially all pre-B lymphocytes, plasma cells, and thymocytes. Also present on activated T lymphocytes, natural killer (NK) lymphocytes, myeloblasts, and erythroblasts. Bimodally expressed during B cell development, modulating from high in immature cells to low in intermediate ones and back to high on mature B cells. This antibody competes with clone AT13/5 (Ab00289) (Ellis 1995).
IgG1 Kappa
Protein A purified
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  • CyTOF-ready
  • Flow Cytometry 1:10 - 1:1000
  • Western Blot 1:100 - 1:2000
Application Notes
This antibody is CyTOF-ready.

Reactivity Notes


Packaging, Storage & Formulations

Store at 4C for up to 3 months. For longer storage, aliquot and store at -20C.
0.02% Proclin 300
1 mg/ml
Protein A purified

Alternate Names for CD38 Antibody (HB7)

  • 2'-phospho-ADP-ribosyl cyclase
  • 2'-phospho-ADP-ribosyl cyclase/2'-phospho-cyclic-ADP-ribose transferase (EC:
  • 2'-phospho-cyclic-ADP-ribose transferase
  • ADPRC 1
  • ADPRC1
  • ADP-ribosyl cyclase 1
  • ADP-ribosyl Cyclase
  • ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase 1
  • ADP-ribosyl cyclase/cyclic ADP-ribose hydrolase
  • cADPr hydrolase 1
  • CD_antigen: CD38
  • CD38 antigen (p45)
  • CD38 antigen
  • CD38 molecule
  • CD38
  • cluster of differentiation 38
  • Cyclic ADP-ribose hydrolase 1
  • Cyclic ADP-ribose Hydrolase
  • EC
  • EC
  • EC:
  • NAD(+) nucleosidase
  • T10


CD38 (cluster of differentiation 38), previously known as T10, is a 46 kDa type II transmembrane glycoprotein (1). CD38 is expressed in both lymphoid and non-lymphoid tissue including in thymocytes, T and B lymphocytes, myeloid cells, natural killer cells, plasma cells, erythrocytes, and additionally in cells of the brain, pancreas, muscle, and bone (1,2). Structurally, CD38 is an "L"-shape which is formed by two separate domains connected by a three peptide-chain hinge region (2). The N-terminal domain is composed of five alpha-helices and two beta strands, while the C-terminal domain contains a four-stranded parallel beta-sheet and two long and two short alpha-helices (2). The CD38 molecule is located on chromosome 4 and is 300 amino acids (aa) in length with a theoretical molecular weight of 34 kDa that functions as both a receptor and an enzyme (1-6). As a receptor, CD38 interacts with its ligand CD31, which is largely expressed in endothelial cells (2-6). As an ectoenzyme, CD38 has a role in calcium signaling and is responsible for the conversion of nicotinamide adenine dinucleotide (NAD) into adenosine diphosphate-ribose (ADPR) or cyclic ADPR and the conversion of phosphorylated NAD (NADP) into nicotinic acid adenine dinucleotide phosphate (NAADP) (2-6).

As described above, CD38 is highly expressed in plasma cells and, as a result, is a target for treating multiple myeloma (MM), the cancer of white blood cells (4,6). The anti-CD38 monoclonal antibody daratumumab is one specific treatment for MM (4,6). Daratumumab has been shown to target MM cells through antibody-dependent cellular cytotoxicity and antibody dependent cellular phagocytosis (4). Additionally, CD38 has a potential role in neurodegenerative disorders and neuroinflammation as elucidated CD38's high expression in neurons, astrocytes, and microglia along with its enzymatic role in NAD degradation (3). Reduced NAD levels is a consequence of aging and occurs during neurodegeneration (3). Furthermore, murine studies have found that CD38 deletion inhibits neuroinflammation and neurodegeneration and therefore might be a potential therapeutic target (3). Similarly, CD38 inhibitors, like quercetin and luteolin, are used to treat age-related diseases and metabolic disorders (7).


1. Malavasi, F., Funaro, A., Alessio, M., DeMonte, L. B., Ausiello, C. M., Dianzani, U., Lanza, F., Magrini, E., Momo, M., & Roggero, S. (1992). CD38: a multi-lineage cell activation molecule with a split personality. International journal of clinical & laboratory research.

2. Malavasi, F., Deaglio, S., Funaro, A., Ferrero, E., Horenstein, A. L., Ortolan, E., Vaisitti, T., & Aydin, S. (2008). Evolution and function of the ADP ribosyl cyclase/CD38 gene family in physiology and pathology. Physiological reviews.

3. Guerreiro, S., Privat, A. L., Bressac, L., & Toulorge, D. (2020). CD38 in Neurodegeneration and Neuroinflammation. Cells.

4. van de Donk, N., Richardson, P. G., & Malavasi, F. (2018). CD38 antibodies in multiple myeloma: back to the future. Blood.

5. Lund, F. E., Cockayne, D. A., Randall, T. D., Solvason, N., Schuber, F., & Howard, M. C. (1998). CD38: a new paradigm in lymphocyte activation and signal transduction. Immunological reviews.

6. Glaria, E., & Valledor, A. F. (2020). Roles of CD38 in the Immune Response to Infection. Cells.

7. Rajman, L., Chwalek, K., & Sinclair, D. A. (2018). Therapeutic Potential of NAD-Boosting Molecules: The In Vivo Evidence. Cell metabolism.


This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

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Secondary Antibodies


Isotype Controls

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Gene Symbol CD38