Recombinant Mouse CD38 Protein, CF

Catalog #: 4947-AC Datasheet / COA / SDS

Catalog #	Availability	Size / Price	Qty
4947-AC-010
4947-AC-01M

R&D Systems Recombinant Proteins and Enzymes

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Recombinant Mouse CD38 Protein, CF Summary

Product Specifications

Purity

>95%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

<1.0 EU per 1 μg of the protein by the LAL method.

Activity

Measured by its ability to convert the substrate nicotinamide guanine dinucleotide (NGD⁺) to cyclic GDP-ribose. Graeff, R.M. et al. (1994) J. Biol. Chem. 269:30260. The specific activity is >50,000 pmol/min/µg, as measured under the described conditions.

Source

Mouse myeloma cell line, NS0-derived mouse CD38 protein
Leu45-Thr304, with a C-terminal 6-His tag

Accession #

EDL37596

N-terminal Sequence
Analysis

Leu45

Predicted Molecular Mass

31 kDa

SDS-PAGE

36-43 kDa, reducing conditions

Product Datasheets

4947-AC

Product Datasheet

COA

SDS

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

4947-AC

Formulation	Supplied as a 0.2 μm filtered solution in Tris and NaCl.
Shipping	The product is shipped with polar packs. Upon receipt, store it immediately at the temperature recommended below.
Stability & Storage:	Use a manual defrost freezer and avoid repeated freeze-thaw cycles. 6 months from date of receipt, -20 to -70 °C as supplied. 3 months, -20 to -70 °C under sterile conditions after opening.

Assay Procedure

Materials

Assay Buffer: 50 mM MES, 50 mM NaCl, pH 6.5
Recombinant Mouse CD38 (rmCD38) (Catalog # 4947-AC)
Substrate: NGD+ (Sigma, Catalog # N-5131), 10 mM stock in deionized water
F16 Black Maxisorp Plate (Nunc, Catalog # 475515)
Fluorescent Plate Reader (Model: SpectraMax Gemini EM by Molecular Devices) or equivalent

Dilute rmCD38 to 0.1 ng/µL in Assay Buffer.
Dilute Substrate to 200 µM in Assay Buffer.
Load into a plate 50 µL of 0.1 ng/µL rmCD38, and start the reaction by adding 50 µL of 200 µM Substrate. Include a Substrate Blank containing 50 µL of Assay Buffer and 50 µL of 200 µM Substrate.
Read at excitation and emission wavelengths of 300 nm and 410 nm (top read), respectively, in kinetic mode for 5 minutes.
Calculate specific activity:

Specific Activity (pmol/min/µg) =	Adjusted V_max* (RFU/min) x Conversion Factor** (pmol/RFU)
	amount of enzyme (µg)

*Adjusted for Substrate Blank
**Derived using calibration standard cyclic GDP ribose (cGDPR).

Per Well:

rmCD38: 0.005 µg
Substrate: 100 µM

Reconstitution Calculator

Background: CD38

CD38, also known as ADP-ribosyl cyclase and cyclic ADP-ribose hydrolase, is a Type II integral membrane protein. The enzyme is able to transform NAD(P)⁺ into three different products with calcium mobilizing ability; cyclic ADP-ribose, NAADP⁺, and ADP-ribose (1). CD38 is expressed in B and T lymphocytes, osteoclasts, and in cardiac, pancreatic, liver and kidney cells (2, 3). Through its production of cyclic ADP-ribose, CD38 modulates calcium-mediated signal transduction in many types of cells, including neutrophils and pancreatic beta cells (4, 5). CD38 has been shown to regulate oxytocin secretion, and may be involved in the development of complex social behaviors in mammals (6).

References

Schuber, F. and F.E. Lund (2004) Curr. Mol. Med. 4:249.
Jackson, D.G. and J.I. Bell (1990) J. Immunol. 144:2811.
Sun, L. et al. (1999) J. Cell Biol. 146:1161.
Partida-Sanchez, S. et al. (2001) Nature Med. 7:1209.
Kato, I. et al. (1995) J. Biol. Chem. 270:30045.
Jin, D. et al. (2007) Nature 446:41.

Long Name

Cluster of Differentiation 38

Entrez Gene IDs

952 (Human); 12494 (Mouse); 25668 (Rat); 102126394 (Cynomolgus Monkey)

Alternate Names

2'-phospho-ADP-ribosyl cyclase; 2'-phospho-ADP-ribosyl cyclase/2'-phospho-cyclic-ADP-ribose transferase (EC:2.4.99.20); 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 2.4.99.20; EC 3.2.2.6; EC:3.2.2.6; NAD(+) nucleosidase; T10