B6917

Seroalbúmina bovina

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

• Sinónimos: Albúmina bovina, Albúmina sérica bovina, BSA
• Número de CAS: 9048-46-8
• EC Number: 232-936-2
• MDL number: MFCD00130384
• UNSPSC Code: 12352202
• NACRES: NA.27

Propiedades

• biological source: bovine
• Quality Level: 300
• grade: for molecular biology
• assay: ≥98% (agarose gel electrophoresis)
• form: lyophilized powder
• quality: deacetylated
• mol wt: ~66 kDa
• 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)

Descripción

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

Se sospecha que ciertos epítopos conformacionales y de secuencia primaria son alérgenos en las alergias humanas a la leche y a la carne.

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

La seroalbúmina puede denominarse también Fracción V. Esta convención de nomenclatura procede del método original de fraccionamiento de las proteínas séricas de Cohn en el que se utiliza precipitación en etanol frío. Utilizando dicho método, la seroalbúmina se encontró en la fracción quinta del etanol. Desde entonces, algunos han venido utilizando la expresión «Fracción V» para describir la albúmina sérica, al margen del método de preparación. Otros han utilizado este término para describir la seroalbúmina purificada por métodos de fraccionamiento en etanol que se han modificado mucho desde que se describió el método Cohn original. Sigma-Aldrich fabrica y distribuye seroalbúminas purificadas mediante una variedad de métodos primarios, entre ellos el verdadero método de fraccionamiento de Cohn, los métodos de fraccionamiento en etanol modificados, el fraccionamiento térmico y la cromatografía. Etapas de purificación añadidas pueden ser la cristalización o la filtración en carbón activado.

Información de seguridad

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)