The molecular weight of this product is not determined on a lot to lot basis. According to published literature, the molecular weight of Immunoglobulin G (IgG) is approximately 150 - 160 KDa. Historical data available for this product indicates that in SDS-PAGE electrophoresis this material will have multiple bands ranging from 155 kDa - 220 kDa.
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I4506
IgG aus Humanserum
reagent grade, ≥95% (SDS-PAGE), essentially salt-free, lyophilized powder
Synonym(e):
Human-IgG
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About This Item
Konjugat
unconjugated
Qualität
reagent grade
Assay
≥95% (SDS-PAGE)
Form
essentially salt-free, lyophilized powder
Zusammensetzung
Protein, ≥90%
Methode(n)
ELISA: suitable
dot immunobinding: suitable
immunoelectrophoresis: suitable
western blot: suitable
Lagertemp.
2-8°C
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Allgemeine Beschreibung
Anwendung
Biochem./physiol. Wirkung
Haftungsausschluss
Lagerklassenschlüssel
11 - Combustible Solids
WGK
WGK 3
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
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What is the expected MW of the product?
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Necesito saber la secuencia de la proteína o el número para buscarla en uniprot
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The protein sequence is not determined for this product. Human IgG has 4 subclasses: IgG1, IgG2, IgG3 and IgG4. These are present in serum at approximately 66%, 23%, 7% and 4%, respectively.
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What is the isoelectric point of this
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This product is not tested on a lot-to-lot basis to determine the isoelectric point. However, historical data indicates an isoelectric point range of 6.1 - 8.5.
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Is product I4506, because it is derived from human serum, considered to potential biohazard?
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As indicated in the corresponding Data Sheet at the link below: "BIOHAZARD: Handle as if capable of transmitting infectious agents". The source material is tested and found negative for antibody to HIV, antibody to HCV, and for HbsAG.
Please see the link below to review the product data sheet:
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/product/documents/100/203/i4506dat.pdfHelpful?
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What is the recommended storage method for item I4506, IgG from human serum, after reconstitution?
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After reconstitution, keep aliquots at 2-8°C for short-term use (up to 4 weeks) and store the remaining aliquots at -20°C.
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What is the significance of absorbance at 280 nm (E280 1% = 14)?
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The absorbance at 280 nm (E280 1% = 14) indicates the percent extinction coefficient (ϵ1%).
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what is the expected molecular weight under reducing conditions
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I4506, Human IgG, is a tetrameric protein consisting of 2 light chains and 2 heavy. When run on a reducing gel, The heavy chain will be detectable at ~50kDa, and the light chain at ~25kda.
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How can I use Product I4506, IgG from human serum, to block Fc receptors on the cell surface for flow cytometry analysis of cells?
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Human cells to be used for FACS staining may be Fc-blocked by treatment with 1 μg of human IgG per 100,000 cells, for 15 minutes at room temperature. It is not necessary to wash to remove excess IgG before proceeding with staining.
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How should I store my solution of Product I4506, IgG from human serum?
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Solutions can be stored at -20 °C for at least 1 year.
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Is Product I4506, IgG from human serum, tested for endotoxin?
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No. Product No. I4506 is not tested for endotoxin levels.
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