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P4689

Sigma-Aldrich

Protein G′ from proprietary source

recombinant, expressed in E. coli, lyophilized powder

Sinónimos:

G′ protein

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1 MG
US$ 163,00
5 MG
US$ 554,00

US$ 163,00

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1 MG
US$ 163,00
5 MG
US$ 554,00

About This Item

Código UNSPSC:
12352203
NACRES:
NA.46

US$ 163,00

PRECIOS SIN IMPUESTOS NACIONALES

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recombinante

expressed in E. coli

Nivel de calidad

conjugado

unconjugated

Formulario

lyophilized powder

capacidad

~5 mg/mg, solid binding capacity (IgG)

temp. de almacenamiento

−20°C

Descripción general

Genetically engineered truncated protein G; retains affinity for IgG, but lacks albumin- and Fab- binding sites and membrane-binding regions.[1]
Protein G is a group G Streptococcus protein and is a large multi-domain cell wall protein. It interacts with the Fc region of IgG (immunolglobulin) through its repeating 55-amino acid domain. Strain GX7809 and GX7805 contain two and three such protein repeats respectively.[2][3]

Aplicación

Protein G has been used for the analysis of mAb (monoclonal antibody) synergy towards hCG (human chorionic gonadotropin) using surface plasmon resonance (SPR), and for serum IgG galactosylation obtained from RA (rheumatoid arthrtitis) patients and MRL-lpr mice.[4][5]

Acciones bioquímicas o fisiológicas

Protein G is implicated in the evasion of host defence response by Streptococcus, via its protein binding properties. It is interacts with α2-micorglobulin which is a predominant inhibitor of human plasma.[2]

Forma física

Lyophilized from water.

Cláusula de descargo de responsabilidad

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

Código de clase de almacenamiento

11 - Combustible Solids

Clase de riesgo para el agua (WGK)

WGK 3

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

Eyeshields, Gloves, type N95 (US)


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Arie Ryvkin et al.
PloS one, 7(8), e41469-e41469 (2012-08-08)
Polyclonal serum consists of vast collections of antibodies, products of differentiated B-cells. The spectrum of antibody specificities is dynamic and varies with age, physiology, and exposure to pathological insults. The complete repertoire of antibody specificities in blood, the IgOme, is
C R Goward et al.
The Biochemical journal, 267(1), 171-177 (1990-04-01)
The gene for Protein G from Streptococcus strain G148 was cloned and expressed in Escherichia coli. The regions on the gene corresponding to the albumin-binding domains and the Fab-binding region were then deleted by site-directed mutagenesis. The translation of regions
Raj Mutharasan
Methods in molecular biology (Clifton, N.J.), 504, 73-82 (2009-01-23)
In this chapter, method of fabricating a cantilever biosensors and their use in measuring the presence of a protein is described. There are many variations in construction of a cantilever sensor. A simple and an easy version is described in
T Klonisch et al.
Immunology, 89(2), 165-171 (1996-10-01)
The effects of orientating pairs of synergistic monoclonal antibodies (mAb) on binding of human chorionic gonadotropin (hCG) was studied by radioimmunoassay (RIA), enzyme-linked immunosorbent assay (ELISA) and surface plasmon resonance (SPR). Antibody synergy towards hCG required two functionally intact antibodies
Agalactosyl IgG and beta-1,4-galactosyltransferase gene expression in rheumatoid arthritis patients and in the arthritis-prone MRL lpr/lpr mouse.
Jeddi PA et al
Immunology, 87(4), 654-659 (1996)

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