biological source
bovine milk
Quality Level
form
powder
technique(s)
isoelectric focusing (IEF): suitable
pI
5.1
UniProt accession no.
storage temp.
−20°C
Gene Information
bovine ... LGB(280838)
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General description
Milk from dairy cows contains the protein β-lactoglobulin (BLG). It naturally occurs in a number of genetic variants, and the most prevalent bovine variants are BLG A and BLG B.
Application
β-Lactoglobulin was used in the identification of the genetic variants of κ-casein in milk by isoelectric focusing.
Biochem/physiol Actions
A member of the lipocalin family, βLg is a small protein of 162 amino acids with a molecular mass of ∼18,400 Da. It has an eight-stranded β-barrel (strands A-H) succeeded by a three-turn α-helix and a final β-strand (strand I) that forms part of the dimerization interface.
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