A3782 Sigma-Aldrich Albumin from human serum is supplied in the form of lyophilized powder. It is soluble in H2O to 50 mg/mL.
Kluczowe dokumenty
A3782
Albumin from human serum
lyophilized powder, Fatty acid free, Globulin free, ≥99% (agarose gel electrophoresis)
Synonim(y):
HSA
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618,00 zł
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About This Item
618,00 zł
Polecane produkty
pochodzenie biologiczne
human
Próba
≥99% (agarose gel electrophoresis)
Formularz
lyophilized powder
masa cząsteczkowa
monomer calculated mol wt 66478 Da
metody
ELISA: suitable
tissue culture: suitable
western blot: suitable
zanieczyszczenia
HIV I and HIVII, HCV and HBsAg, tested negative
≤0.1% Fatty acids
rozpuszczalność
H2O: soluble 50 mg/mL
numer dostępu UniProt
temp. przechowywania
2-8°C
ciąg SMILES
FC(F)(F)C(F)(F)C(F)(F)F
InChI
1S/C3F8/c4-1(5,2(6,7)8)3(9,10)11
Klucz InChI
QYSGYZVSCZSLHT-UHFFFAOYSA-N
informacje o genach
human ... ALB(213)
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Opis ogólny
Albumin is a known carrier of fatty acids (FA). Thus control over specific FA′s for cell culture is important, as different cell lines can differ in their sensitivity to particular fatty acids. Fatty acid-free human serum albumin (HSA) is therefore useful for cell culture studies where specific fatty acid content must be strictly controlled, so that researchers can use particular fatty acids specific to their cell lines. Fatty acid-free albumin also allows for optimal and maximum binding sites for using specific fatty acids in cell culture. The use of FA-free HSA also addresses concerns about endogenous FA′s potentially in non-FA-free HSA.
Albumin is widely used as a blocking agent in immunoassays and immunodetection procedures, and as a carrier protein for dilution of antibodies. Awareness of potential trace endogenous content of globulins / IgG in human serum albumin (HSA) is therefore important, because such trace globulins / IgG may serve as antigens for secondary antibodies in immunodetection work. This product undergoes testing for low globulin content / status as essentially globulin-free.
Zastosowanie
Działania biochem./fizjol.
Cechy i korzyści
- Fatty acid-free / low fatty acid content
- Globulin-free / low globulin content
Inne uwagi
Oświadczenie o zrzeczeniu się odpowiedzialności
Kod klasy składowania
11 - Combustible Solids
Klasa zagrożenia wodnego (WGK)
WGK 3
Temperatura zapłonu (°F)
Not applicable
Temperatura zapłonu (°C)
Not applicable
Środki ochrony indywidualnej
Eyeshields, Gloves
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Produkty
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What is the stock concentration for Albumin for human serum?
1 answer-
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How many chains are there in this protein? Is it in dimer form?
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The amino acid sequence and structure of human albumin have been determined. Human albumin is a protein with no carbohydrate content. It is a single polypeptide chain with one free sulfhydryl group on residue # 34 and 17 intrachain disulfide bonds.
Kindly review the following citation that explains "conditions that favor partly destabilized monomers and dimers, such as low pH, high temperature, and the presence of chemical denaturants".
Juárez J, Taboada P, Mosquera V. Existence of different structural intermediates on the fibrillation pathway of human serum albumin. Biophys J. 2009 Mar 18;96(6):2353-70. doi: 10.1016/j.bpj.2008.12.3901. PMID: 19289061; PMCID: PMC2907680.
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Is it possible that the dried powder contains traces of salts? Specifically, was it lyophilized from PBS, saline, or a salt solution?
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The albumin from human serum (product number A3782) was in contact with deionized water before lyophilization, which was extensively processed to remove salts. While trace amounts of sodium caprylate may be present, this is not tested for. The claim that the product is salt-free is based solely on the manufacturing method described above.
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