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  5. CD20/MS4A1 Protein, Human (Trx-His)

CD20/MS4A1 Protein, Human (Trx-His)

Cat. No.: HY-P7896A
COA Handling Instructions

CD20/MS4A1 Protein, a B-lymphocyte membrane protein, crucially regulates cellular calcium influx, essential for B-lymphocyte development, differentiation, and activation. As part of the store-operated calcium (SOC) channel, it promotes calcium influx upon B-cell receptor/BCR activation. CD20/MS4A1 forms homotetramers, contributing to its structural organization in calcium signaling. Interacting with both heavy and light chains of cell surface IgM, the antigen-binding components of the BCR, emphasizes its involvement in the B-cell receptor complex, underscoring significance in B-cell activation and immune responses. CD20/MS4A1 Protein, Human (Trx-His) is the recombinant human-derived CD20/MS4A1 protein, expressed by E. coli, with N-Trx, N-6*His labeled tag. The total length of CD20/MS4A1 Protein, Human (Trx-His) is 48 a.a., with molecular weight of approximately 20.91 kDa.

For research use only. We do not sell to patients.

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Description

CD20/MS4A1 Protein, a B-lymphocyte membrane protein, crucially regulates cellular calcium influx, essential for B-lymphocyte development, differentiation, and activation. As part of the store-operated calcium (SOC) channel, it promotes calcium influx upon B-cell receptor/BCR activation. CD20/MS4A1 forms homotetramers, contributing to its structural organization in calcium signaling. Interacting with both heavy and light chains of cell surface IgM, the antigen-binding components of the BCR, emphasizes its involvement in the B-cell receptor complex, underscoring significance in B-cell activation and immune responses. CD20/MS4A1 Protein, Human (Trx-His) is the recombinant human-derived CD20/MS4A1 protein, expressed by E. coli, with N-Trx, N-6*His labeled tag. The total length of CD20/MS4A1 Protein, Human (Trx-His) is 48 a.a., with molecular weight of approximately 20.91 kDa.

Background

The CD20/MS4A1 protein, a B-lymphocyte-specific membrane protein, plays a crucial role in regulating cellular calcium influx essential for the development, differentiation, and activation of B-lymphocytes. It functions as a component of the store-operated calcium (SOC) channel, promoting calcium influx upon activation by the B-cell receptor/BCR. CD20/MS4A1 forms homotetramers, contributing to its structural organization and functional role in calcium signaling. Notably, it interacts with both the heavy and light chains of cell surface IgM, the antigen-binding components of the BCR, highlighting its involvement in the B-cell receptor complex and underscoring its significance in B-cell activation and immune responses.

Biological Activity

Data is not available.

Species

Human

Source

E. coli

Tag

N-Trx;N-6*His

Accession

P11836 (I141-S188)

Gene ID

931  [NCBI]

Synonyms
rHuB-lymphocyte antigen CD20/CD20, Trx-His; MS4A1; CD20; MS4A-1; B1; Bp35; CVID5; LEU-16; MS4A2; S7
AA Sequence

IKISHFLKMESLNFIRAHTPYINIYNCEPANPSEKNSPSTQYCYSIQS

Molecular Weight

approximately 20.91 kDa

Purity
  • Greater than 95% as determined by reducing SDS-PAGE
Appearance

Lyophilized powder.

Formulation

Lyophilized from a 0.2 μm filtered solution of 50 mM Tris-HCl, 150 mM NaCl, 1 mM EDTA, pH 8.0.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Reconstitution

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Storage & Stability

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Shipping

Room temperature in continental US; may vary elsewhere.

Documentation
Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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The reconstitution calculator equation

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration
= ÷

The dilution calculator equation

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
× = ×
C1   V1   C2   V2

The specific activity calculator equation

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)
Unit/mg = 106 ÷ ng/mL

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Product Name:
CD20/MS4A1 Protein, Human (Trx-His)
Cat. No.:
HY-P7896A
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