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A4612

Sigma-Aldrich

Bovine Serum Albumin

lyophilized powder, Essentially fatty acid free

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Synonym(s):
Albumin from bovine serum, Albumin bovine serum, BSA, Bovine albumin
CAS Number:
EC Number:
MDL number:
NACRES:
NA.25

biological source

bovine

Quality Level

assay

≥98% (agarose gel electrophoresis)

form

lyophilized powder

mol wt

~66 kDa

packaging

poly bottle of

origin

New Zealand origin

technique(s)

ELISA: suitable
cell culture | mammalian: suitable

impurities

≤0.01% free fatty acid (GC)

pH

4.8-7.5

solubility

H2O: soluble 40 mg/mL

UniProt accession no.

storage temp.

2-8°C

Gene Information

bovine ... ALB(280717)

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1 of 4

This Item
A3608A2934A3733
vibrant-m

A4612

Bovine Serum Albumin

vibrant-m

A3608

Bovine Serum Albumin

vibrant-m

A2934

Bovine Serum Albumin

vibrant-m

A3733

Bovine Serum Albumin

origin

New Zealand origin

origin

New Zealand origin

origin

USA origin

origin

New Zealand origin

assay

≥98% (agarose gel electrophoresis)

assay

≥96% (agarose gel electrophoresis)

assay

≥98% (agarose gel electrophoresis)

assay

≥98% (agarose gel electrophoresis)

technique(s)

ELISA: suitable, cell culture | mammalian: suitable

technique(s)

immunoprecipitation (IP): suitable

technique(s)

ELISA: suitable

technique(s)

flow cytometry: suitable

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

General description

Bovine serum albumin (BSA) is an α-helical, globular and non-glycosylated 66kDa protein. It is characterized with three domains with two subdomains under each. BSA belongs to the serum albumins family and has 17-disulfide bonds.
The most abundant plasma protein in mammals is albumin. It is produced in the liver and transferred as a non-glycosylated protein into the plasma. This multifunctional protein has an amazing ability to bind to ligands.

Application

Bovine Serum Albumin has been used as a component of Tris-buffered saline (TBST) to stabilize polyvinylidene fluoride (PVDF) membranes during western blotting. It has also been used in along with phosphate-buffered saline with tween detergent (PBST) as a blocking buffer in enzyme linked immunosorbent assay(ELISA).
Bovine serum albumin (BSA) is extensively used for drug delivery since it is widely available, cheap and easily purified, has ligand-binding properties, and is widely accepted in the pharmaceutical industry.

Biochem/physiol Actions

Albumin is the most important circulatory protein involved in the control of Ca2+ (and Mg2+) levels in mammals.
Bovine Serum Albumin (BSA) is a transporter for drugs, hormones and fatty acids. It is used as a blocking agent in enzyme linked immunosorbent assay (ELISA) for preventing non-specific binding of antigens and antibodies to the microtiter plates. BSA is a crucial component of the cell culture media and favors embryonic stem cells (hESC) differentiation. BSA shares structural features with human serum albumin. Its high solubility, low cost and purity and interaction with surfactant is exploited in cosmetic and pharmaceutical industry.
Certain conformational and primary-sequence epitopes of BSA are suspected allergens in human beef and milk allergies.

Features and Benefits

  • Essentially fatty acid-free
  • Sourced and manufactured in New Zealand
  • Prepared by chromatography

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.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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Bovine Serum Albumin heat shock fraction, protease free, fatty acid free, essentially globulin free, pH 7, ≥98%

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International journal of nanomedicine, 8, 1207-1222 (2013-04-10)
The livertaxis of glycyrrhizic acid-conjugated bovine serum albumin (GL-BSA) has been reported in the literature. Now, in this paper, we describe a novel type of drug-targeted delivery system containing 10-hydroxycamptothecin (HCPT) with liver tumor targeting. First, GL was coupled to
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Telomeres are repeat regions of DNA that cap either end of each chromosome, thereby providing stability and protection from the degradation of gene-rich regions. Each cell replication causes the loss of telomeric repeats due to incomplete DNA replication, though it

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