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C4 Protein

CAT: 1008-A402Size: 250 µLDry Ice: NoHazardous: No
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CAT#:1008-A402Size:250 µL
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24/48H Stock Items & 2 to 6 Weeks non Stock Items.
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Background
Purified human complement component C4. C4 is one of the proteins unique to the Classical Complement Pathway. The 200 kD C4 protein is made up of three peptide chains linked by disulfide bonds and contains a thioesterbond. When the classical pathway is activated, C1s cleaves C4 to C4a (a weak anaphylatoxin) and C4b. C4b can then bind covalently to a target surface or complex. It can then function as an opsonin or participate as part classical pathway convertase. C4 has been shown to exist as two separate "complotypes" C4A and C4B. These have been shown to have different biological properties.
Description
Purified human C4 protein
Source
Normal human serum
Applications
See citations and technical data sheet for application info.
Concentration
1.0 mg/mL (refer to CoA for lot specific concentration)
Purity
>90% by SDS-PAGE
Activity
>80% versus normal human serum standard
Form
Frozen liquid. 10 mM sodium phosphate, 145 mM NaCl, pH 7.2. No preservative, 0.22 μm filtered.
Molecular Weight
205,000 Da (3 chains)
Storage Conditions
Store at -70°C or below. Avoid freeze/thaw.

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