B6917

Sieroalbumina

lyophilized powder, suitable for (for molecular biology), Non-acetylated, Molecular Biology

• Sinonimo/i: Albumina bovina, Albumina siero bovino, BSA
• Numero CAS: 9048-46-8
• UNSPSC Code: 12352202
• EC Number: 232-936-2
• NACRES: NA.27
• MDL number: MFCD00130384
• eCl@ss: 32160409
• Biological source: bovine
• Assay: ≥98% (agarose gel electrophoresis)
• Form: lyophilized powder
• Technique(s): electrophoresis: suitable-98% using Agarose
• Impurities: enzymatic impurity, none detected

Proprietà

• biological source: bovine
• Quality Segment: 300
• grade: Molecular Biology
• assay: ≥98% (agarose gel electrophoresis)
• form: lyophilized powder
• quality: deacetylated
• purified by: heat shock fractionation
• packaging: glass bottle of
• origin: USA origin
• technique(s): electrophoresis: suitable-98% using Agarose
• impurities: enzymatic impurity, none detected
• pH: 7
• solubility: water: soluble (50 mg/ml)
• suitability: suitable for (for molecular biology)
• UniProt accession no.: P02769
• foreign activity: Alkaline Phosphatase free , Alkaline phosphatase and peroxidase, none detected, DNase free , DNase, RNase, and protease, none detected, Peroxidase free , Protease free , RNase free
• storage temp.: 2-8°C
• Gene Information: bovine ... ALB(280717)

Descrizione

General description

Bovine Serum Albumin (BSA) is a plasma protein produced in the bovine liver that has a globular, non-glycosylated α-helical structure. It consists of a single polypeptide chain with 583 amino acid residues and 17 cysteine residues that form the cross-linked disulfide bridges, stabilizing its structure. The BSA protein comprises three structurally distinct domains (I, II, and III), each of which contains two sub-domains (A and B) arranged in a heart-shaped architecture.

Application

Bovine Serum Albumin (BSA) has been used

• as a component of phosphate buffer saline (PBS) solution for dissolving tumor necrosis factor α (TNFα), which was added as a supplement for culture media
• as a blocking agent to reduce non-specific binding during the albumin sensor assay
• as a blocking agent in the immunofluorescence (IF) assay
• as a protein standard in the Bradford assay

Biochem/physiol Actions

Si sospetta che alcuni epitopi conformazionali e di sequenza primaria di BSA siano allergeni nelle allergie umane a carne bovina e latte.

Bovine Serum Albumin (BSA) is a versatile protein commonly utilized in cell and tissue culture media as a supplement. It helps in lipid solubilization and stabilizing other proteins. BSA is also a carrier for small molecules such as steroids, fatty acids, and thyroid hormones. It serves as a standard protein for immunochemical tests to determine protein concentration in a solution and calibration studies.

Features and Benefits

This BSA product for molecular biology is tested for the following properties:
* Alkaline Phosphatase-free
* DNase-free / Exonuclease-free
* Nickase-free / Endonuclease-free
* Peroxidase-free
* Protease-free
* RNase-free

Preparation Note

Ci si riferisce alla sieroalbumina come Frazione V. Questa designazione è presa dal metodo originale introdotto da Cohn per frazionare siero proteine usando la precipitazione in etanolo a freddo. La sieroalbumina è stata trovata da Cohn nella quinta frazione col suo metodo basato sull′etanolo. Da allora il termine “Frazione V” è stato usato da alcuni a prescindere dal metodo di preparazione. Altri hanno usato questa terminologia riferita a sieroalbumina purificata con metodi di frazionamento basati su etanolo che sono stati profondamente modificati dai tempi in cui Cohn li ha descritti. Sigma-Aldrich produce e distribuisce sieroalbumine purificate con vari metodi primari inclusi il metodo originale di frazionamento di Cohn, metodi modificati di frazionamento con etanolo, shock termico e cromatografia. Stadi successivi di purificazione possono comprendere cristallizzazione o filtrazione su carbone attivo.

Informazioni sulla sicurezza

• Classe di stoccaggio: 11 - Combustible Solids
• Che succede?: WGK 1
• Punto di infiammabilità (°F): Not applicable
• Punto di infiammabilità (°C): Not applicable
• DPI (dispositivi di protezione individuale): Eyeshields, Gloves, type N95 (US)