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A5611

Sigma-Aldrich

Bovine Serum Albumin

Cohn Fraction V, lyophilized powder, ≥96% (agarose gel electrophoresis)

Synonyma:

Albumin bovine serum, BSA, Bovine albumin

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About This Item

Číslo CAS:
9048-46-8
EC Number:
232-936-2
MDL number:
MFCD00130384
UNSPSC Code:
12352202
NACRES:
NA.25

biological source

bovine

assay

≥96% (agarose gel electrophoresis)

form

lyophilized powder

mol wt

~66 kDa

packaging

poly bottle of

origin

USA origin

technique(s)

immunohistochemistry: suitable

pH

4.8-7.5

solubility

H2O: soluble 40 mg/mL, clear to slightly hazy, yellow

UniProt accession no.

P02769

storage temp.

2-8°C

Gene Information

bovine ... ALB(280717)

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General description

Serum albumins are soluble constituents of the circulatory system. Bovine serum albumin (BSA) is homologous to human serum albumin (HSA). BSA consists of three homologous domains (I, II, III), that are separated into nine loops by disulfide bonds. Serum albumin acts as a depot protein.

Application

Bovine Serum Albumin has been used:
  • for in vitro high molecular weight (HMW)-species formation assay
  • for immunohistochemistry
  • in Escherichia coli quantitative polymerase chain reaction (qPCR) analysis

Biochem/physiol Actions

Certain conformational and primary-sequence epitopes of BSA are suspected allergens in human beef and milk allergies.

Preparation Note

Serum albumin may be referred to as Fraction V. This naming convention is taken from the original Cohn method of fractionating serum proteins using cold ethanol precipitation. Serum albumin was found in the fifth ethanol fraction using Cohn′s method. Since then, the term "Fraction V" has been used by some to describe serum albumin regardless of the method of preparation. Others have used this term to describe serum albumin purified by ethanol fractionation methods that have been highly modified since the original Cohn method was described. Sigma-Aldrich manufactures and distributes serum albumins purified from a variety of primary methods including the true Cohn fractionation method, modified ethanol fractionation methods, heat shock and chromatography. Additional purification steps may include crystallization or charcoal filtration.
This is a cold alcohol fractionated albumin that is produced by Sigma-Aldrich with a stricter adherence to the original Cohn method of fractionation than other commercially available bovine albumins.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Osvědčení o analýze (COA)

Lot/Batch Number
0000408837
0000364236
0000360927
0000408837
0000315750

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Bovine Serum Albumin cold ethanol fraction, pH 5.2, ≥96%

Sigma-Aldrich

A4503

Bovine Serum Albumin

BSA Fraction V ≥98.5%, Ash 1%, Heavy metals < 10 ppm, stem cell culture, Mycoplasma Negative, USA origin

Roche

BSAVHS-RO

BSA Fraction V

Bovine Serum Albumin heat shock fraction, pH 7, ≥98%

Sigma-Aldrich

A9647

Bovine Serum Albumin

Albumin fraction V (from bovine serum) for biochemistry

Sigma-Aldrich

1.12018

Albumin fraction V

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