A2058

Sieroalbumina

lyophilized powder, essentially IgG-free, low endotoxin, BioReagent, suitable for cell culture

• 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: ≥95% (agarose gel electrophoresis)
• Form: lyophilized powder
• Technique(s): cell culture | mammalian: suitable
• Impurities: IgG free, ≤0.05% IgG, ≤1 EU/mg endotoxin

Proprietà

• biological source: bovine
• Quality Segment: 300
• product line: BioReagent
• assay: ≥95% (agarose gel electrophoresis)
• form: lyophilized powder
• purified by: chromatography
• packaging: poly bottle of
• origin: New Zealand origin
• technique(s): cell culture | mammalian: suitable
• impurities: IgG free, ≤0.05% IgG, ≤1 EU/mg endotoxin
• pH: 7
• solubility: water: soluble (40 mg/ml)
• UniProt accession no.: P02769
• storage temp.: 2-8°C
• Gene Information: bovine ... ALB(280717)

Descrizione

General description

Bovine serum albumin (BSA) is a non-glycosylated protein belonging to the serum albumins family. It is a globular protein with α-helix structure and 17-disulfide bonds. BSA has a molecular weight of 66 kDa consisting three domains and two subdomains under each. BSA shows structural similarity with human serum albumin.

Application

Bovine Serum Albumin has been used to treat polyomavirus BK to serve as a control in testing intravenous immunoglobulins preparations.

BSA is widely used as a blocking agent in immunoassays and immunodetection procedures, and also as a carrier protein for dilution of antibodies. Thus it is of concern to be aware of potential trace endogenous content of globulins / IgG in BSA, because of concerns that such trace globulins / IgG may serve as antigens for secondary antibodies in immunodetection work. This product undergoes testing for low IgG content / status as essentially immunoglobulin-free.

Select the right albumin for your application with the Albumin Selection Guide

BSA is widely used as a blocking agent in immunoassays and immunodetection procedures, and also as a carrier protein for dilution of antibodies. Thus it is of concern to be aware of potential trace endogenous content of globulins / IgG in BSA, because of concerns that such trace globulins / IgG may serve as antigens for secondary antibodies in immunodetection work. This product undergoes testing for low IgG content / status as essentially immunoglobulin-free.

Select the right albumin for your application with the Albumin Selection Guide.

Biochem/physiol Actions

Bovine Serum Albumin (BSA) acts as a carrier protein for drugs, hormones and fatty acids. It is an essential component of cell culture medium. BSA serves as a blocking agent in enzyme linked immunosorbent assay (ELISA) and prevents non-specific binding of antigens and antibodies to the microtiter plates. Due to its high solubility, low cost and purity and interaction with surfactant, it is useful in pharmaceutical and cosmetic industry.

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

Features and Benefits

• Tested for use in cell culture
• Low endotoxin
• Essentially IgG-free (immunoglobulin 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.

Prepared by salt fractionation, ion exchange, and gel filtration chromatography.

Informazioni sulla sicurezza

• Classe di stoccaggio: 11 - Combustible Solids
• wgk: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)