A3294
Bovine Serum Albumin
heat shock fraction, protease free, pH 7, ≥98%
Synonym(s):
Albumin bovine serum, BSA, Bovine albumin
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About This Item
Recommended Products
biological source
bovine
Assay
≥98%
form
lyophilized powder
mol wt
~66 kDa
purified by
heat shock fractionation
packaging
poly bottle of
origin
USA origin
technique(s)
ELISA: suitable
blood typing: suitable
microbiological culture: suitable
impurities
protease, none detected
loss
≤5%
pH
7
solubility
water: soluble (40 mg/ml)
UniProt accession no.
foreign activity
BT Virus, none detected
VSV Virus, none detected
storage temp.
2-8°C
Gene Information
bovine ... ALB(280717)
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General description
Albumin is abundantly present in human plasma. Increased levels of albumin result in dehydration. Albumin turnover is usually found in children with iron deficiency anemia. It is a predictive indicator for liver disease.
Application
Bovine Serum Albumin has been used:
- to block non-specific binding of the antibodies
- as a component of activating medium for inducing sperm motility
- to determine the protein concentration of the bacteriocin by the bicinchoninic acid (BCA) method
Biochem/physiol Actions
Certain conformational and primary-sequence epitopes of BSA are suspected allergens in human beef and milk allergies.
Features and Benefits
- Heat shock fractionated
- Protease-free
Preparation Note
Prepared using heat shock fractionation
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)
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