204888
Complement C5, Human
Complement C5, Human, CAS 80295-53-0. is a native glycoprotein composed of two non-identical subunits of M.W. 120 kDa (α) and 75 kDa (β) linked by disulfide bonds.
Synonym(s):
Complement C5, Human
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About This Item
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Quality Level
assay
≥95% (SDS-PAGE)
form
liquid
manufacturer/tradename
Calbiochem®
storage condition
OK to freeze
avoid repeated freeze/thaw cycles
impurities
IgG, IgA, IgM, albumin, ceruloplasmin or functionally C3, C6, C7, C8, or C9, trace
shipped in
wet ice
storage temp.
−70°C
General description
Native, human C5 complement component. Glycoprotein composed of two non-identical subunits of M.W. 120 kDa (α) and 75 kDa (β) linked by disulfide bonds. Present in normal human serum at 70 µg/ml. Activation of complement via either the classical or alternative pathway can result in the assembly of C5-cleaving enzymes (C5 convertases) on target surfaces. Both C5 convertases cleave the C5 α-chain at peptide bond 74 resulting in production of C5a (M.W. 11,200) and C5b fragments (M.W. 185,000). Released C5a peptide is one of the three complement-derived anaphylatoxins. C5b fragment combines with C6, C7, C8, and C9 to form lytic C5b-9 complement membrane attack complex (MAC).
Native, human C5 complement component. Glycoprotein composed of two non-identical subunits of M.W. 120,000 (α) and 75,000 (β) linked by disulfide bonds. Present in normal human serum at 70 µg/ml. Activation of complement via either the classical or alternative pathway can result in assembly of C5-cleaving enzymes (C5 convertases) on target surfaces. Both C5 convertases cleave the C5 α-chain at the peptide bond 74, resulting in production of C5a (M.W. 11,200) and C5b fragments (M.W. 185,000). Released C5a peptide is one of the three complement-derived anaphylatoxins. C5b fragment combines with C6, C7, C8, and C9 to form the lytic C5b-9 complement membrane attack complex (MAC).
Biochem/physiol Actions
≥100,000 C₅H₅0 units/mg; ≥60% of the C5 activity in normal human serum on a mg/mg basis
Packaging
Please refer to vial label for lot-specific concentration.
Warning
Toxicity: Standard Handling (A)
Physical form
In PBS, pH 7.2.
Preparation Note
Prepared from serum that has been shown by certified tests to be negative for HBsAg and for antibodies to HIV and HCV.
Reconstitution
Following initial thaw, aliquot and freeze (-70°C).
Other Notes
Janatova, J. 1988. Methods Enzymol. 162, 579.
Wetsel, R.A., et al. 1980. J. Immunol. Methods 35, 319.
Wetsel, R.A., et al. 1980. J. Immunol. Methods 35, 319.
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Storage Class
12 - Non Combustible Liquids
wgk_germany
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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