B6917
Bovine Serum Albumin
lyophilized powder, suitable for (for molecular biology), Non-acetylated
Synonym(s):
Albumin bovine serum, BSA, Bovine albumin
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About This Item
Recommended Products
biological source
bovine
grade
for molecular biology
Assay
≥98% (agarose gel electrophoresis)
form
lyophilized powder
quality
deacetylated
mol wt
~66 kDa
purified by
heat shock fractionation
packaging
glass bottle of
origin
USA origin
technique(s)
electrophoresis: suitable-98% using Agarose
impurities
enzymatic impurity, none detected
pH
7
solubility
water: soluble (50 mg/ml)
suitability
suitable for (for molecular biology)
UniProt accession no.
foreign activity
Alkaline Phosphatase free
Alkaline phosphatase and peroxidase, none detected
DNase free
DNase, RNase, and protease, none detected
Peroxidase free
Protease free
RNase free
storage temp.
2-8°C
Gene Information
bovine ... ALB(280717)
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General description
Bovine Serum Albumin (BSA) is a plasma protein produced in the bovine liver that has a globular, non-glycosylated α-helical structure. It consists of a single polypeptide chain with 583 amino acid residues and 17 cysteine residues that form the cross-linked disulfide bridges, stabilizing its structure. The BSA protein comprises three structurally distinct domains (I, II, and III), each of which contains two sub-domains (A and B) arranged in a heart-shaped architecture.
Application
Bovine Serum Albumin (BSA) has been used
- as a component of phosphate buffer saline (PBS) solution for dissolving tumor necrosis factor α (TNFα), which was added as a supplement for culture media
- as a blocking agent to reduce non-specific binding during the albumin sensor assay
- as a blocking agent in the immunofluorescence (IF) assay
- as a protein standard in the Bradford assay
Biochem/physiol Actions
Bovine Serum Albumin (BSA) is a versatile protein commonly utilized in cell and tissue culture media as a supplement. It helps in lipid solubilization and stabilizing other proteins. BSA is also a carrier for small molecules such as steroids, fatty acids, and thyroid hormones. It serves as a standard protein for immunochemical tests to determine protein concentration in a solution and calibration studies.
Certain conformational and primary-sequence epitopes of BSA are suspected allergens in human beef and milk allergies.
Features and Benefits
This BSA product for molecular biology is tested for the following properties:
* Alkaline Phosphatase-free
* DNase-free / Exonuclease-free
* Nickase-free / Endonuclease-free
* Peroxidase-free
* Protease-free
* RNase-free
* Alkaline Phosphatase-free
* DNase-free / Exonuclease-free
* Nickase-free / Endonuclease-free
* Peroxidase-free
* Protease-free
* RNase-free
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 Code
11 - Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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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