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Key Documents

L8005

Sigma-Aldrich

β-Lactoglobulin B from bovine milk

≥90% (PAGE)

Sinonimo/i:

β-LG, Bos d 5, beta-LG

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About This Item

Numero CAS:
Numero MDL:
Codice UNSPSC:
12352202
NACRES:
NA.61

Origine biologica

bovine milk

Livello qualitativo

Saggio

≥90% (PAGE)

Forma fisica

powder

PM

18,276 Da by calculation

tecniche

HPLC: suitable
electrophoresis: suitable

N° accesso UniProt

Temperatura di conservazione

2-8°C

Informazioni sul gene

bovine ... LGB(280838)

Descrizione generale

β-Lactoglobulin B (β-LG B), a isoform of β-Lactoglobulin, is a small protein of 162 amino acids with a molecular mass of 18.2 kDa and optimum pH of 5.2. It is present in high level in casein and is relatively low in raw bovine milk. β-LG has 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.
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 known as BLG A and BLG B.

Applicazioni

β-Lactoglobulin B from bovine milk has been used as:
  • a protein standard in SDS-polyacrylamide electrophoresis for quantification of milk protein fractions
  • in the calibration of reversed phase- high-performance liquid chromatography (HPLC) for caseins quantification
  • for immobilization on the biosensor surface and a calibration standards in biosensor assay

β-Lactoglobulin was used in the identification of the genetic variants of κ-casein in milk by isoelectric focusing electrophoresis.

Azioni biochim/fisiol

β-Lactoglobulin B (β-LG B) show less inhibitory effect on the Staphylaococcus sp compared to β-LG A.

Codice della classe di stoccaggio

11 - Combustible Solids

Classe di pericolosità dell'acqua (WGK)

WGK 3

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

Dispositivi di protezione individuale

Eyeshields, Gloves, type N95 (US)


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