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Documentos Principais

B8894

Sigma-Aldrich

Albumin, Acetylated from bovine serum

protease free, for molecular biology

Sinônimo(s):

Ac-BSA, Acetyl BSA, Acetylated BSA

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About This Item

Número CAS:
Número CE:
Número MDL:
Código UNSPSC:
12352202
NACRES:
NA.27

fonte biológica

bovine

Nível de qualidade

grau

for molecular biology

linha de produto

BioReagent

Formulário

solution

purificado por

heat shock fractionation

contém

does not contain stabilizer or preservative

origem

USA origin

concentração

20 mg/mL in H2O

técnica(s)

FISH: suitable

Impurezas

HIV I and HIVII, HCV and HBsAg, tested negative

nº de adesão UniProt

atividade externa

DNase free
DNase, RNase, NICKase and protease, none detected
NICKase free
Protease free
RNase free

temperatura de armazenamento

−20°C

Informações sobre genes

bovine ... ALB(280717)

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Descrição geral

Serum albumin is the most extensive plasma protein in the circulatory system. It is produced within the liver and exported as a non-glycosylated protein to the blood plasma. The molecular weight of native serum albumin is around 66 kDa. Native serum albumin is a negatively charged protein.

Acetylation of bovine serum albumin particularly modifies lysine (Lys) residues with elevated frequency, with lesser degrees of modification of serine (Ser) and threonine (Thr) residues. MALDI-TOF mass spectrometry analysis of acetylated BSA has indicated an increased MW of about 3000, compared to native BSA (Ostatná, V. et al., J. Electroanalytical Chem., 821, 97-103 (2018)).. This acetylation process also derivatizes similar amino acid residues in any trace contaminating nucleases in the BSA, to inactivate that nuclease activity. This makes acetylated BSA useful in molecular biology applications where trace nuclease activity must be minimized.

Aplicação

Acetylated BSA has been used as a component of the reaction mixture for adapter ligation. In addition, this B8894 acetylated BSA product has been used in other applications, such as:
  • In cDNA library preparation (Hafner, M. et al., RNA, 17(9), 1697-1712 (2011))
  • As a blocking agent with streptavidin beads used for capture of biotinylated RNA (Winz, M.-L. et al., Nat. Protocol., 12(1), 122-149 (2017))
Acetylated to inactivate nucleases commonly found in BSA. Acetylated BSA should not be used as a protein standard since acetylation of tyrosine residues prevents color development in the Lowry assay and other similar protein determinations.

Ações bioquímicas/fisiológicas

Native serum albumin plays a major role in maintaining the pH and osmotic pressure of the blood. It is also involved in transporting a diverse range of endogenous and exogenous metabolites, such as amino acids, fatty acids, drugs, steroids and metal ions. Native serum albumin can have a role in modulating the levels of Ca2+ and Mg2+ metals in blood.

Características e benefícios

This acetylated BSA product has been tested for the following properties:
  • DNase-free / Exonuclease-free
  • Nickase-free / Endonuclease-free
  • Protease-free
  • RNase-free

Código de classe de armazenamento

11 - Combustible Solids

Classe de risco de água (WGK)

WGK 3

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Equipamento de proteção individual

Eyeshields, Gloves, type N95 (US)


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