A4612

Sieroalbumina

lyophilized powder, Essentially fatty acid free

• Sinonimo/i: Albumina bovina, Albumina siero bovino, BSA
• Numero CAS: 9048-46-8
• UNSPSC Code: 12352202
• EC Number: 232-936-2
• NACRES: NA.25
• MDL number: MFCD00130384
• eCl@ss: 32160409
• Biological source: bovine
• Assay: ≥98% (agarose gel electrophoresis)
• Form: lyophilized powder
• Technique(s): ELISA: suitable, cell culture | mammalian: suitable
• Impurities: ≤0.01% free fatty acid (GC)

Proprietà

• biological source: bovine
• Quality Segment: 200
• assay: ≥98% (agarose gel electrophoresis)
• form: lyophilized powder
• packaging: poly bottle of
• origin: New Zealand origin
• technique(s): ELISA: suitable, cell culture | mammalian: suitable
• impurities: ≤0.01% free fatty acid (GC)
• pH: 4.8-7.5
• solubility: H₂O: soluble 40 mg/mL
• UniProt accession no.: P02769
• storage temp.: 2-8°C
• Gene Information: bovine ... ALB(280717)

Descrizione

General description

The most abundant plasma protein in mammals is albumin. It is produced in the liver and transferred as a non-glycosylated protein into the plasma. This multifunctional protein has an amazing ability to bind to ligands. [1]

Bovine serum albumin (BSA) is an α-helical, globular and non-glycosylated 66kDa protein. It is characterized with three domains with two subdomains under each. BSA belongs to the serum albumins family and has 17-disulfide bonds.

Application

Bovine serum albumin (BSA) is extensively used for drug delivery since it is widely available, cheap and easily purified, has ligand-binding properties, and is widely accepted in the pharmaceutical industry. [2]

Bovine Serum Albumin has been used as a component of Tris-buffered saline (TBST) to stabilize polyvinylidene fluoride (PVDF) membranes during western blotting. It has also been used in along with phosphate-buffered saline with tween detergent (PBST) as a blocking buffer in enzyme linked immunosorbent assay(ELISA).

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.

Albumin is the most important circulatory protein involved in the control of Ca²⁺ (and Mg²⁺) levels in mammals. [1]

Bovine Serum Albumin (BSA) is a transporter for drugs, hormones and fatty acids. It is used as a blocking agent in enzyme linked immunosorbent assay (ELISA) for preventing non-specific binding of antigens and antibodies to the microtiter plates. BSA is a crucial component of the cell culture media and favors embryonic stem cells (hESC) differentiation. BSA shares structural features with human serum albumin. Its high solubility, low cost and purity and interaction with surfactant is exploited in cosmetic and pharmaceutical industry.

Features and Benefits

• Essentially fatty acid-free
• Sourced and manufactured in New Zealand
• Prepared by chromatography

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
• wgk: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable