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A0722

Sigma-Aldrich

Apolipoprotein A-I from human plasma

≥85% (SDS-PAGE), buffered aqueous solution

Synonyme(s) :

Apo A-I

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About This Item

Numéro MDL:
Code UNSPSC :
12352202
Nomenclature NACRES :
NA.32

Source biologique

human plasma

Niveau de qualité

Pureté

≥85% (SDS-PAGE)

Forme

buffered aqueous solution

Poids mol.

28.3 kDa

Technique(s)

ELISA: suitable

Numéro d'accès UniProt

Conditions d'expédition

dry ice

Température de stockage

−20°C

Informations sur le gène

human ... APOA1(335)

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Application

Apolipoprotein A-I from human plasma has been used to induce cholesterol efflux in nitrobenzoxadiazole (NBD)-cholesterol loaded cells. It has also been used to detect IgG anti-apoA-1 antibodies using enzyme linked immunosorbent assay (ELISA).
Major protein components in high density lipoprotein (HDL)

Actions biochimiques/physiologiques

Apo-AI comprises ~70% of the protein moiety in HDL. It is a single polypeptide chain consisting of 245 amino acids with glutamic acid as the C-terminal residue and aspartic acid as the N-terminal residue. The molecular mass is reported to be 28.3 kDa. The protein is made up of one major isoform (pI 5.6) and two minor isoforms (pI 5.53 and 5.46). Apo-AI shows a high content of α-helix structure. The amphipathic regions in the α-helix structure seem to be responsible for lipid binding capacity. In aqueous solution, Apo-AI shows self-association with minor conformation change. Apo-AI activates lecithin-cholesterol (LCAT) acyltransferase, which is responsible for cholesterol esterification in plasma.

Apo-AI levels in normal plasma are 90-130 mg/dl. Apo-AI levels may be inversely related to the risk of coronary disease.

Forme physique

Solution in 10 mM ammonium bicarbonate

Clause de non-responsabilité

Ce produit, destiné à la recherche scientifique, est soumis à une réglementation spécifique en France, y compris pour les activités d′importation et d′exportation (Article L 1211-1 alinéa 2 du Code de la Santé Publique). L′acheteur (c′est-à-dire l′utilisateur FINAL) est tenu d′obtenir une autorisation d′importation auprès du ministère français de la recherche, mentionné à l′article L1245-5-1 II du Code de la Santé Publique. En commandant ce produit, vous confirmez détenir l′autorisation d′importation requise.

Code de la classe de stockage

10 - Combustible liquids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable


Certificats d'analyse (COA)

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Consulter la Bibliothèque de documents

Sara Croca et al.
Arthritis research & therapy, 17, 26-26 (2015-04-19)
IgG anti-apolipoprotein A-1 (IgG anti-apoA-1) antibodies are present in patients with systemic lupus erythematosus (SLE) and may link inflammatory disease activity and the increased risk of developing atherosclerosis and cardiovascular disease (CVD) in these patients. We carried out a rigorous
H J Menzel et al.
The Journal of biological chemistry, 259(5), 3070-3076 (1984-03-10)
Variant forms of apolipoprotein A-I (apo-A-I) have been shown to exist in the human population. One mutant form, referred to as apo-A-I-Münster-3, is one charge unit more basic than normal apo-A-I on isoelectric focusing gels. This variant has the same
Gabriele Romano et al.
International journal of cardiology, 271, 233-239 (2018-06-17)
Atherosclerosis is a slowly progressing, chronic multifactorial disease characterized by the accumulation of lipids, inflammatory cells, and fibrous tissue that drives to the formation of asymmetric focal thickenings in the tunica intima of large and mid-sized arteries. Despite the high
Anti-ApoA-I IgG antibodies are not associated with carotid artery disease progression and first-time cardiovascular events in middle-aged individuals
Lagerstedt JO, et al.
Journal of Internal Medicine, 285(1), 49-58 (2019)
J O Lagerstedt et al.
Journal of internal medicine, 285(1), 49-58 (2018-07-22)
IgG antibodies against apolipoprotein A-I (ApoA-I) have been found to be elevated in subjects from the general population with clinically manifest cardiovascular disease and in myocardial infarction patients with an adverse prognosis. Here, we investigated whether these antibodies are prospectively

Articles

Lipoproteins package cholesterol for transport in plasma, essential for lipid transport and cellular function in the body.

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