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G4386

Sigma-Aldrich

γ-Globulins from human blood

≥99% (electrophoresis)

Synonym(s):

Human γ-Globulin

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About This Item

CAS Number:
MDL number:
UNSPSC Code:
12352202
NACRES:
NA.61

biological source

human blood

assay

≥99% (electrophoresis)

form

powder

technique(s)

protein quantification: suitable

impurities

HIV, HCV and HBsAg, source material tested negative
≤4% NaCl

solubility

0.9% NaCl: soluble 50 mg/mL

UniProt accession no.

storage temp.

2-8°C

Gene Information

human ... IGLL1(3543)

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General description

γ-Globulins are immunoglobulins and occur in five classes, namely: IgG, IgM, IgA, IgD, and IgE. These are glycoproteins that are antibodies produced by plasma cells. The immunoglobulins are heterogeneous molecules made up of four polypeptide chains (two light chains and two heavy chains) linked together by disulfide bonds. The antigen-binding site is present at the nitrogen terminal. 20% of the protein in plasma are immunoglobulins.

Application

γ-Globulins from human blood have been used for the blocking step in cytometric bead array It has also been used as a standard for γ-globulin measurement in cerebrospinal fluid (CSF).
γ-globulins were used to study a micro-method for measuring total protein in cerebrospinal fluid by using benzethonium chloride in microtiter plate wells. It was used in the measurement of protein in tannin-protein precipitates using ninhydrin. It was also used to study the blood distribution of levocetirizine, a new non-sedating histamine H1-receptor antagonist, in humans.

Biochem/physiol Actions

Immunoglobulins are key regulators of the immune system and are produced in response to antigens. They protect our bodies against bacteria, viruses, and fungi. Immunoglobulins are involved in the activation of the complement system, opsonization of microbes for phagocytosis, neutralization of toxins and viruses, and inhibition of the attachment of microbes to mucosal surfaces. Immunodeficiency can lead to recurrent infectious diseases.

Preparation Note

Prepared from Cohn Fraction II, III

Disclaimer

RESEARCH USE ONLY. This product is regulated in France when intended to be used for scientific purposes, including for import and export activities (Article L 1211-1 paragraph 2 of the Public Health Code). The purchaser (i.e. enduser) is required to obtain an import authorization from the France Ministry of Research referred in the Article L1245-5-1 II. of Public Health Code. By ordering this product, you are confirming that you have obtained the proper import authorization.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Xiu Liu et al.
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Natural autoantibodies play a crucial role in destruction of malignant tumors due to immune surveillance function. Epidermal growth factor receptor 2 (HER2) has been found to be highly expressed in a variety of epithelial tumors including oral squamous cell carcinoma
F Kilár et al.
European journal of biochemistry, 147(1), 17-25 (1985-02-15)
The structure of six human myeloma proteins: IgG1(Bal), IgG2(Klu), IgG3(Bak), IgG3(Het), IgG4(Kov) and IgG4(Pol), was studied in solution using small-angle X-ray scattering and hydrodynamic methods. For IgG1(Bal) and IgG3(Het) the experimental data, including radius of gyration (Rg degree), radii of
Blood
Sturkie's Avian Physiology, 167-191 (2015)
Immunoglobulin E (Ige): Novel Treatment for Lowering the Concentration of Ige (2021)
Turbidimetric measurement of $\gamma$-globulin in cerebrospinal fluid with use of sulfosalicylic acid and Triton X-100
Ihara H, et al.
Journal of Analytical Bio-Science Vol, 32(5) (2009)

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