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Key Documents

SAB1403623

Sigma-Aldrich

Monoclonal Anti-C4B antibody produced in mouse

clone 1F2, purified immunoglobulin, buffered aqueous solution

Synonym(s):

C4A, C4A13, C4A91, C4B1, C4B12, C4B2, C4B3, C4B5, C4F

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About This Item

UNSPSC Code:
12352203
NACRES:
NA.41

biological source

mouse

conjugate

unconjugated

antibody form

purified immunoglobulin

antibody product type

primary antibodies

clone

1F2, monoclonal

form

buffered aqueous solution

mol wt

antigen ~37.11 kDa

species reactivity

human

technique(s)

capture ELISA: suitable
immunofluorescence: suitable
indirect ELISA: suitable
western blot: 1-5 μg/mL

isotype

IgG2bκ

NCBI accession no.

shipped in

dry ice

storage temp.

−20°C

target post-translational modification

unmodified

Gene Information

human ... C4B(721)

General description

This gene encodes the basic form of complement factor 4, part of the classical activation pathway. The protein is expressed as a single chain precursor which is proteolytically cleaved into a trimer of alpha, beta, and gamma chains prior to secretion. The trimer provides a surface for interaction between the antigen-antibody complex and other complement components. The alpha chain may be cleaved to release C4 anaphylatoxin, a mediator of local inflammation. Deficiency of this protein is associated with systemic lupus erythematosus. This gene localizes to the major histocompatibility complex (MHC) class III region on chromosome 6. Varying haplotypes of this gene cluster exist, such that individuals may have 1, 2, or 3 copies of this gene. In addition, this gene exists as a long form and a short form due to the presence or absence of a 6.4 kb endogenous HERV-K retrovirus in intron 9. (provided by RefSeq)

Immunogen

C4B (NP_000583, 1347 a.a. ~ 1446 a.a) partial recombinant protein with GST tag. MW of the GST tag alone is 26 KDa.

Sequence
NNRQIRGLEEELQFSLGSKINVKVGGNSKGTLKVLRTYNVLDMKNTTCQDLQIEVTVKGHVEYTMEANEDYEDYEYDELPAKDDPDAPLQPVTPLQLFEG

Physical form

Solution in phosphate buffered saline, pH 7.4

Disclaimer

Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.

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Storage Class

10 - Combustible liquids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable


Certificates of Analysis (COA)

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Chengliang Zhu et al.
Oncology letters, 15(5), 7459-7463 (2018-05-08)
The immune system serves an important function in Hepatitis B virus (HBV) infection, and the complement system is a major component of innate immunity. However, the regulatory effect of HBV on complement proteins has not yet been fully elucidated. The

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