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| http://purl.uniprot.org/citations/12700345 | http://www.w3.org/2000/01/rdf-schema#comment | "Apolipoprotein C-IV (apoC-IV), the newest member of the low-molecular-weight apoC group, has been characterized in blood plasma of rabbits, in which it is a major proline-rich apoC component (Zhang, L-H., L. Kotite, and R. J. Havel. 1996. Identification, characterization, cloning, and expression of apoC-IV, a novel sialoglycoprotein of rabbit plasma lipoproteins. J. Biol. Chem. 271: 1776-1783). Although the decoded sequence of mouse and human apoC-IV is known, apoC-IV has not been identified in blood plasma from these or other species. Rabbit apoC-IV exists in several sialoforms, and the asialoform has an acidic isoelectric point. We show that apoC-IV is a basic protein in human, monkey, and mouse plasma, present as a minor apoC component of VLDL. Human apoC-IV, isolated from apo VLDL by DEAE-cellulose chromatography and two-dimensional electrophoresis, was identified by microsequencing four tryptic peptides. The protein exhibits two major isoforms; one is N-glycosylated, and both are variably sialylated. In normolipidemic plasma, greater than 80% of the protein is in VLDL (0.7% of total apo VLDL), with most of the remainder in HDL. The concentration of apoC-IV in the plasma and lipoproteins of rho < 1.21 g/ml is closely related to plasma triglyceride concentration up to 1,770 mg/dl, varying from 0.1-1.9 mg/dl. Neither the human nor rabbit apoC-IV gene contains a typical TATA box in the 5'-flanking region, but the 5'-untranslated region of the rabbit gene contains a unique purine-rich sequence, GGGACAG(G/A), repeated nine times in tandem, with an additional two within the 5'-flanking sequence. This sequence, functioning as a GAGA box that has been implicated in the transcription of a number of genes, may explain the higher level of expression of apoC-IV in rabbits."xsd:string |
| http://purl.uniprot.org/citations/12700345 | http://purl.org/dc/terms/identifier | "doi:10.1194/jlr.m300087-jlr200"xsd:string |
| http://purl.uniprot.org/citations/12700345 | http://purl.uniprot.org/core/author | "Burlingame A.L."xsd:string |
| http://purl.uniprot.org/citations/12700345 | http://purl.uniprot.org/core/author | "Yu Z."xsd:string |
| http://purl.uniprot.org/citations/12700345 | http://purl.uniprot.org/core/author | "Zhang L.H."xsd:string |
| http://purl.uniprot.org/citations/12700345 | http://purl.uniprot.org/core/author | "Havel R.J."xsd:string |
| http://purl.uniprot.org/citations/12700345 | http://purl.uniprot.org/core/author | "Kotite L."xsd:string |
| http://purl.uniprot.org/citations/12700345 | http://purl.uniprot.org/core/date | "2003"xsd:gYear |
| http://purl.uniprot.org/citations/12700345 | http://purl.uniprot.org/core/name | "J Lipid Res"xsd:string |
| http://purl.uniprot.org/citations/12700345 | http://purl.uniprot.org/core/pages | "1387-1394"xsd:string |
| http://purl.uniprot.org/citations/12700345 | http://purl.uniprot.org/core/title | "Human apoC-IV: isolation, characterization, and immunochemical quantification in plasma and plasma lipoproteins."xsd:string |
| http://purl.uniprot.org/citations/12700345 | http://purl.uniprot.org/core/volume | "44"xsd:string |
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