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A4919 Sigma

Bovine Serum Albumin

heat shock fraction, protease free, low endotoxin, suitable for cell culture, pH 7, ≥98%

Synonym: Albumin bovine serum, BSA, Bovine albumin

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Properties

Related Categories Albumin, Albumins, Albumins and Transport Proteins, Albumins by Application, Biochemicals and Reagents,
product line   BioReagent
assay   ≥98%
form   lyophilized powder
mol wt   mol wt ~66 kDa
purified by   heat shock fractionation
packaging   poly bottle of
origin   USA origin
impurities   ≤1.0 EU/mg endotoxin
loss   ≤5%
pH   7
solubility   water: soluble (40 mg/ml)
suitability   suitable for cell culture
foreign activity   protease ≤0.005 U/mg
storage temp.   2-8°C

Description

Packaging

1, 5, 25, 100 g in poly bottle

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.

Application

Select the right albumin for your application with the Albumin Selection Guide

Biochem/physiol Actions

Certain conformational and primary-sequence epitopes of BSA are suspected allergens in human beef and milk allergies.

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
3
Protocols & Articles

Articles

Common Cell Culture Problems: Cell Clumping

Cells in suspension may attach to one another and form clumps for a variety of reasons. The most common cause of cell clumping is the presence of free DNA and cell debris in the culture medium, which...
Keywords: Adhesion, Apoptosis, Cell culture, Cell disruption, Culture media, Environmental, Flow cytometry

Common Cell Culture Problems: Cell Death

There is perhaps nothing more frustrating to a cell culturist than removing a dish from the incubator only to find that it’s full of dead cells. Getting to the bottom of the problem can be very chall...
Keywords: Antibiotics, Apoptosis, Autophagy, Buffers, Cell culture, Cell disruption, Cryopreservation, Culture media, Environmental, Enzyme activity, Filtration, Metabolism, Peptide synthesis, Reductions

Common Cell Culture Problems: Cell Line Cross-Contamination and Misidentification

A few years after scientists working at Johns Hopkins established the first human cell line using cervical epithelial cells (HeLa) from cancer patient Henrietta Lacks in the early 1950s, it was obser...
Keywords: Cancer, Cell culture, Cryopreservation, Forensic, Genetic, Phase transitions, Polymerase chain reaction

Common Cell Culture Problems: Contamination

Overview Types of Contamination Common Causes and Prevention of Contaminants    Microbial (bacteria, fungi, yeast)    Mycoplasma    Viral Contamination    Chemical Contamination General Tips and Tech...
Keywords: Antibiotics, Antifungals, Apoptosis, Buffers, Cell attachment, Cell culture, Culture media, Detergents, Eliminations, Environmental, Filtration, Fluorescent microscopy, Gene expression, Indicators, Metabolism, Microscopy, Polymerase chain reaction, Sterilizations

Common Cell Culture Problems: Poor Attachment of Adherent Cells

Optimal cell attachment in vitro requires the interaction of healthy cells with a wide range of cell-derived attachment molecules present in media, serum, and supplements. Cultureware surfaces are fr...
Keywords: Buffers, Cell attachment, Cell culture, Culture media, Decarboxylations, Environmental, Growth factors, Lipid peroxidation, Peroxidations, Precipitation, Reductions, Respiration

Common Cell Culture Problems: Precipitates

When contamination is ruled out, turbidity in cell culture media is often explained by the precipitation of metals, proteins, and other media components. Precipitates can be harmful to cell health, a...
Keywords: Antibiotics, Cell culture, Culture media, Desiccation, Evaporation, Filtration, Microscopy, Nucleic acid denaturation, Precipitation, Purification

Protocols

Common Cell Culture Problems: Poor Cell Growth

Ensuring adequate cell growth is a critical part of collecting accurate data with cell cultures. Cells can be cultured in suspension, or as a monolayer that attaches to cultureware, such as a flask, ...
Keywords: Antibiotics, Apoptosis, Buffers, Cell attachment, Cell culture, Condensations, Cryopreservation, Culture media, Evaporation, Filtration, Microscopy, Phase transitions, Reductions

Related Content

Albumin in Cell Culture

Importance and uses of albumin in serum-free eucaryotic, including hybridoma and Chinese Hamster Ovary (CHO) cell cultures
Keywords: Cell culture, Culture media, Degradations, Hormones, Ligands, Oxidations, PAGE, Purification, Redox Reactions

Peer-Reviewed Papers
15

References

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