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Verfasst von:Ritter, Mirko [VerfasserIn]   i
 Baehr, Carsten [VerfasserIn]   i
 Fricker, Gert [VerfasserIn]   i
Titel:Cloning and characterization of a novel apolipoprotein A-I binding protein, AI-BP, secreted by cells of the kidney proximal tubules in response to HDL or ApoA-I
Verf.angabe:Mirko Ritter, Christa Buechler, Alfred Boettcher, Stefan Barlage, Anna Schmitz-Madry, Evelyn Orsó, Salim Maa Bared, Gerno Schmiedeknecht, Carsten H. Baehr, Gert Fricker, and Gerd Schmitz
Jahr:2002
Umfang:10 S.
Fussnoten:Gesehen am 25.04.2017
Titel Quelle:Enthalten in: Genomics
Ort Quelle:San Diego, Calif. : Academic Press, 1987
Jahr Quelle:2002
Band/Heft Quelle:79(2002), 5, Seite 693-702
ISSN Quelle:1089-8646
Abstract:Apolipoprotein A-I (apoA-I) is the major apolipoprotein of high-density lipoproteins (HDL) and has an important role in the regulation of the stability, lipid transport, and metabolism of HDL particles. To identify novel proteins that are involved in HDL metabolism, we used mature apoA-I (amino acids 25-267) as a bait for the screening of a human liver two-hybrid cDNA library. Among the identified genes, several encoded known proteins, including serum amyloid A2a (SAA2a), apoC-I, and phosphodiesterase HCAM1 (PDE1A), found to interact with apoA-I. In addition, we have cloned a novel 29 kDa apoA-I interacting protein, which we named AI-BP (apoA-I binding protein). The AI-BP encoding gene, APOA1BP, which is located on chromosome 1q21, is composed of six exons and five introns and spans 2.5 kb. Northern blot analysis demonstrated ubiquitous expression of the APOA1BP mRNA with the highest expression in kidney, heart, liver, thyroid gland, adrenal gland, and testis. AI-BP protein is not detectable in serum of healthy probands, but serum samples of patients with septic syndromes may contain elevated levels of AI-BP. Significant amounts of AI-BP protein are found in cerebrospinal fluid and urine of healthy probands. The stimulation of cells derived from the kidney proximal tubules with apoA-I or HDL induces a concentration-dependent secretion of AI-BP indicating an important role for AI-BP, in the renal tubular degradation or resorption of apoA-I.
DOI:doi:10.1006/geno.2002.6761
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kostenfrei registrierungspflichtig: Volltext: http://dx.doi.org/10.1006/geno.2002.6761
 kostenfrei registrierungspflichtig: Volltext: http://www.sciencedirect.com/science/article/pii/S0888754302967613
 DOI: https://doi.org/10.1006/geno.2002.6761
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1556896646
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