• USA Home
  • A2512 - Albumin from chicken egg white

A2512 Sigma-Aldrich

Albumin from chicken egg white

lyophilized powder, ≥98% (agarose gel electrophoresis)

Synonym: Albumin from hen egg white, Ovalbumin



Related Categories Albumin, Albumins from other species, Biochemicals and Reagents, Proteins and Derivatives
Quality Level   200
biological source   chicken egg white
type   Grade VI
assay   ≥98% (agarose gel electrophoresis)
form   lyophilized powder
mol wt   44287 Da by calculation
purified by   chromatography
extent of labeling   4-20 mol mannose per mol ovalbumin protein
application(s)   bioconjugation: suitable
solubility   H2O: soluble 50 mg/mL, clear to slightly hazy, colorless to faintly yellow
storage temp.   2-8°C
Gene Information   chicken ... OVAL(396058)


General description

Chicken egg albumin is the major protein constituent of egg whites. Chicken egg albumin is a phosphorylated-glycoprotein. From the amino acid sequence, the peptide portion of the molecule consists of 385 residues and has a molecular weight of 42.7 kDa.

Ovalbumin makes 75% of the total egg white protein.


Ovalbumin has been used:
• as a medium for cell incubation in EliCell assay for the detection of released cytokines from eosinophil
• to induce allergic inflammation and atopic dermatitis in experimental mice
• as a component in control mixture for validating tandem mass spectral analysis
• as a model protein antigen to evaluate the in vivo efficacy of a chitosan/interleukin (IL)-12 adjuvant system

A phosphorylated glycoprotein which is useful as a marker (~45 kDa) for protein electrophoresis. Has been used to produce an animal model of asthma.


1, 5 g in poly bottle

250 mg in poly bottle

Biochem/physiol Actions

Albumin from chicken egg white serves as a natural adhesive.

Differential scanning calorimetry indicates that chicken egg albumin denatures at 84 °C. Ovalbumin can be used as a carrier protein to conjugate to synthetic peptides for use as an immunogen. It has the following amino acids: 20 Lys, 10 Tyr, 6 Cys, 14 Asp, and 33 Glu which make it suitable for conjugation.

Physical form

Essentially salt free

Preparation Note

A further purification of A 5503 to reduce mannose content.

Safety & Documentation

Safety Information

GHS08  GHS08
Signal word 
Hazard statements 
Precautionary statements 
Personal Protective Equipment 
NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

Please Enter a Lot Number

Certificate of Origin (COO)

Please Enter a Lot Number
Protocols & Articles
Peer-Reviewed Papers


Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?