A8654
Bovine Serum Albumin
dimer mol wt ~132 kDa
Synonym(s):
Albumin bovine serum, BSA, Bovine albumin
Product Name
Bovine Serum Albumin, dimer mol wt ~132 kDa
biological source
bovine
assay
0.9-1.4 mg per vial protein basis (biuret)
form
lyophilized powder
mol wt
dimer ~132 kDa
monomer ~66 kDa
~66 kDa
purified by
cold ethanol fractionation
origin
USA origin
concentration
0.9—1.4 mg per vial protein (biuret)
technique(s)
protein purification: suitable
pH
5.2
storage temp.
−20°C
Quality Level
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Application
Marker for non-denaturing PAGE
Biochem/physiol Actions
Certain conformational and primary-sequence epitopes of BSA are suspected allergens in human beef and milk allergies.
Preparation Note
0.9-1.4 mg/mL after reconstitution with 1 mL of water
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
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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