05470
Bovine Serum Albumin
lyophilized powder, crystallized, ≥98.0% (GE)
Synonym(s):
Albumin bovine serum, BSA, Bovine albumin
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About This Item
CAS Number:
UNSPSC Code:
12352202
EC Number:
232-936-2
NACRES:
NA.27
MDL number:
eCl@ss:
32160409
Biological source:
bovine
Assay:
≥98.0% (GE)
Form:
lyophilized powder
Technique(s):
cell culture | mammalian: suitable, electron microscopy: suitable
biological source
bovine
Quality Level
assay
≥98.0% (GE)
form
lyophilized powder
packaging
glass bottle of
technique(s)
cell culture | mammalian: suitable, electron microscopy: suitable
pH
4.8-7.5
solubility
H2O: slightly soluble
anion traces
chloride (Cl-): ≤2000 ppm, sulfate (SO42-): ≤1000 ppm
cation traces
Ca: ≤500 ppm, Cd: ≤5 ppm, Co: ≤5 ppm, Cr: ≤100 ppm, Cu: ≤20 ppm, Fe: ≤20 ppm, K: ≤50 ppm, Mg: ≤500 ppm, Mn: ≤5 ppm, Na: ≤7000 ppm, Ni: ≤5 ppm, Pb: ≤5 ppm, Zn: ≤10 ppm
UniProt accession no.
storage temp.
2-8°C
Gene Information
bovine ... ALB(280717)
Application
Bovine serum albumin has been used to quantify proteins in raw enzyme extracts. It has also been used as a blocking agent for mitochondrial imaging.
Albumin from bovine serum can be used for Electron and Immunoelectron microscopy. It can also be used for isolating and culturing neonatal rat cardiac ventricular myocytes.
Biochem/physiol Actions
Bovine serum albumin also refers as BSA or Fraction V is a protein isolated from cows. BSA can block vacant binding sites in enzyme-linked immunosorbent assay (ELISA) in both poly-l-lysine (PLL)-treated and non-treated microwells. It can also trigger insulin dependent diabetes mellitus.
Certain conformational and primary-sequence epitopes of BSA are suspected allergens in human beef and milk allergies.
Packaging
Bottomless glass bottle. Contents are inside inserted fused cone.
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.
Other Notes
Review
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Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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