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MABN43

Sigma-Aldrich

Anti-Apolipoprotein E4 (ApoE4) Antibody, clone 4E4

clone 4E4, from mouse

Synonym(s):

Apolipoprotein E, Apo-E, ApoE4, Apolipoprotein E4

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About This Item

UNSPSC Code:
12352203
eCl@ss:
32160702
NACRES:
NA.41

biological source

mouse

Quality Level

antibody form

purified immunoglobulin

antibody product type

primary antibodies

clone

4E4, monoclonal

species reactivity

human

technique(s)

immunohistochemistry: suitable
immunoprecipitation (IP): suitable
western blot: suitable

isotype

IgG1κ

NCBI accession no.

UniProt accession no.

shipped in

wet ice

target post-translational modification

unmodified

Gene Information

human ... APOE(348)

General description

Apolipoprotein is a polymorphic plasma protein that exists as three isoforms: ApoE4, ApoE3, and ApoE2, which differ in the combination of cysteine and arginine residues located at position 122 and 158. The 35 kDa ApoE4 isoform contains arginine at both locations, and is produced in the liver and brain, although it is widely expressed in other tissues, such as the lung, spleen, and ovary. Like other isoforms, ApoE4 is a ligand for low density lipoprotein receptors (LDL) and plays a critical role in the transport and metabolism of lipids. In addition to its role in maintaining cardiovascular function, ApoE4 is also critically involved in neuronal plasticity, synaptogenesis, aging, and neurodegenerative disorders. Mice deficient in ApoE4 show age-dependent abnormalities in synaptic structure and impaired long term potentiation. Additionally, ApoE4 has a well-documented role in the pathology of Alzheimer’s disease.

Specificity

This antibody recognizes ApoE4 but not ApoE3 or ApoE2.

Immunogen

KLH-conjugated linear peptide corresponding to human ApoE4.

Application

Immunohistochemistry Analysis: A 1:2,000-4,000 dilution from a representative lot detected ApoE4 in human Alzheimer′s diseased brain and human cerebellum tissues.

Immunoprecipitation Analysis: A representative lot was used by an independent laboratory to detect ApoE4 in CHO cells secreting ApoE4. (Image courtesy of Dr. Egon Ogris, Medical University of Vienna)
Research Category
Neuroscience
Research Sub Category
Developmental Neuroscience
This Anti--Apolipoprotein E4 antibody is validated for use in IP, WB, IH for the detection of ApoE4.

Quality

Evaluated by Western Blot in recombinant ApoE4 protein.

Western Blot Analysis: A 1:100,000 dilution detected ApoE4 in 10 µg of recombinant ApoE4 protein.

Target description

~35 kDa observed

Physical form

Format: Purified
Protein G Purified
Purified mouse monoclonal IgG1κ in buffer containing 0.1 M Tris-Glycine (pH 7.4), 150 mM NaCl with 0.05% sodium azide.

Storage and Stability

Stable for 1 year at 2-8°C from date of receipt.

Analysis Note

Control
Recombinant Apolipoprotein E protein

Other Notes

Concentration: Please refer to the Certificate of Analysis for the lot-specific concentration.

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 Code

12 - Non Combustible Liquids

WGK

WGK 1

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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Hee-Young Sohn et al.
Scientific reports, 11(1), 17604-17604 (2021-09-04)
Apolipoprotein E (ApoE) plays multiple roles in lipid transport, neuronal signaling, glucose metabolism, mitochondrial function, and inflammation in the brain. It is also associated with neurodegenerative diseases, and its influence differs depending on the isoform. In particular, the ε4 allele
Gerald Wai-Yeung Cheng et al.
Journal of neuropathology and experimental neurology, 81(9), 717-730 (2022-07-03)
White matter degradation in the frontal lobe is one of the earliest detectable changes in aging and Alzheimer disease. The ε4 allele of apolipoprotein E (APOE4) is strongly associated with such myelin pathology but the underlying cellular mechanisms remain obscure.

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