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Streptavidin–β-Galactosidase conjugate

streptavidin 1-2 units/mg protein, lyophilized powder

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Synonym(s):
Streptavidin–beta-Galactosidase conjugate
MDL number:
NACRES:
NA.46

tag

beta-galactosidase tagged

Quality Level

form

lyophilized powder

streptavidin activity

1-2 units/mg protein

composition

Protein, ≥80% biuret

storage temp.

−20°C

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G6282G563511089161001
Streptavidin-AP conjugate solution, pkg of 1 mL (1,000U)

11089161001

Streptavidin-AP conjugate

form

lyophilized powder

form

-

form

lyophilized powder

form

solution

storage temp.

−20°C

storage temp.

−20°C

storage temp.

−20°C

storage temp.

2-8°C

tag

beta-galactosidase tagged

tag

-

tag

-

tag

-

streptavidin activity

1-2 units/mg protein

streptavidin activity

-

streptavidin activity

-

streptavidin activity

-

composition

Protein, ≥80% biuret

composition

-

composition

Protein, ≥60% biuret

composition

-

General description

Streptavidin, a biotin binding protein produced by the bacteria Streptomyces avidinii, is a very high affinity and specificity non-covalent biotin binding protein that is used in a wide range of biochemical/immunological assays such as western blot and ELISAs. It is a component of the streptavidin-biotin system; wherein biotin is conjugated to a target molecule that is later detected by a signal tagged streptavidin. Streptavidin may be covalently tagged with a range of enzymes that develop chromogenic sustrates or fluorescent molecules to support detection systems.
β-galactosidase may be used in genetic, molecular and immunologic detection systems. Active β-galatosidase cleaves the detection molecule X-gal (5-bromo-4-chloro-indolyl-β-D-galactopyranoside) to form an intense blue product that may be detected by chromogenic techniques.

Specificity

Streptavidin–β-Galactosidase conjugate is reactive with biotin labeled molecules.

Application

Streptavidin–β-Galactosidase conjugate may be used in conjunction with biotin labeled molecules in techniques such as ELISA, immunohistochemistry, protein blotting or with biotinylated DNA probes. It provides a convenient yet highly sensitive and specific detection system.
Streptavidin–ß-Galactosidase conjugate has been used in the fusion assay in chinese hamster ovary cells.

Physical form

Contains Tris buffer salts.

Preparation Note

Streptavidin and β-galactosidase grade VIII are conjugated by a modification of the method of O′Sullivan and purified by gel filtration.

Disclaimer

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.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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Human herpesvirus 8 glycoprotein B (gB), gH, and gL can mediate cell fusion
Pertel PE
Journal of Virology, 76, 4390-4400 (2002)
A simple method for the preparation of enzyme-antibody conjugates.
M J O'Sullivan
Febs Letters, 95 (1978)
R S Niedbala et al.
Journal of biochemical and biophysical methods, 13(4-5), 205-210 (1986-11-01)
Parameters and conditions of an enzyme based assay for biotin and avidin are presented. Biotinylated glucose-6-phosphate dehydrogenase when complexed with avidin becomes inactivated. Thus it was possible to construct a competitive assay system for biotin. The assay is sensitive between
A simple method for the preparation of enzyme-antibody conjugates.
M J O'Sullivan et al.
FEBS letters, 95(2), 311-313 (1978-11-15)

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