Publication Date:
1993-06-18
Description:
Mammalian apolipoprotein B (apo B) exists in two forms, each the product of a single gene. The shorter form, apo B48, arises by posttranscriptional RNA editing whereby cytidine deamination produces a UAA termination codon. A full-length complementary DNA clone encoding an apo B messenger RNA editing protein (REPR) was isolated from rat small intestine. The 229-residue protein contains consensus phosphorylation sites and leucine zipper domains. HepG2 cell extracts acquire editing activity when mixed with REPR from oocyte extracts. REPR is essential for apo B messenger RNA editing, and the isolation and characterization of REPR may lead to the identification of other eukaryotic RNA editing proteins.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Teng, B -- Burant, C F -- Davidson, N O -- DK-42086/DK/NIDDK NIH HHS/ -- HL-38180/HL/NHLBI NIH HHS/ -- KO-4 HL-02166/HL/NHLBI NIH HHS/ -- New York, N.Y. -- Science. 1993 Jun 18;260(5115):1816-9.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Medicine, University of Chicago, IL 60637.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8511591" target="_blank"〉PubMed〈/a〉
Keywords:
Amino Acid Sequence
;
Animals
;
Apolipoproteins B/*genetics
;
Base Sequence
;
Cell Line
;
*Cloning, Molecular
;
Cytidine Deaminase/chemistry/*genetics
;
Humans
;
Intestine, Small/chemistry
;
Leucine Zippers
;
Molecular Sequence Data
;
Molecular Weight
;
Open Reading Frames
;
Phosphorylation
;
*RNA Editing
;
Rats
;
Tumor Cells, Cultured
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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