title: AUUUA-specific mRNA binding proteins in astrocytes.
abstract: Binding of ribonucleoproteins to specific regions of mRNA can alter mRNA stability. This level of posttranscriptional regulation has been shown to play a major role in gene expression of eukaryotic cells. This process involves the binding of ribonucleoproteins to specific region(s) of unstable, rapidly degrading mRNAs such as those found in various cytokines, lymphokines, and oncogenes, thereby increasing the mRNA's stability. In many instances the instability of the mRNA has been mapped to an AU-rich motif in the 3' untranslated region. We transcribed RNA molecules containing four reiterations of an AUUUA motif, and demonstrated with RNA- band shift experiments that the AUUUA motif complexes with phosphorylated AUUUA-specific 43-47 kDa mRNA binding protein(s) found in the cytosol of both rat brain and cultured rat astrocytes.
authors.affiliation: Endocrine-Metabolic Division, Veterans Affairs Medical Center, Chicago, IL, USA.
authors.forename: D B
authors.initials: DB
authors.lastname: Jacobs
authors.forename: A M
authors.initials: AM
authors.lastname: Mandelin
authors.forename: T
authors.initials: T
authors.lastname: Giordano
authors.forename: I
authors.initials: I
authors.lastname: Xue
authors.forename: J S
authors.initials: JS
authors.lastname: Malter
authors.forename: L D
authors.initials: LD
authors.lastname: Singh
authors.forename: A K
authors.initials: AK
authors.lastname: Snyder
authors.forename: S P
authors.initials: SP
authors.lastname: Singh
mesh_terms: D000818:Animals; D001253:Astrocytes / Q000378:metabolism*; D001483:Base Sequence; D008969:Molecular Sequence Data; D010766:Phosphorylation; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism*; D016601:RNA-Binding Proteins / Q000378:metabolism*; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D012333:RNA, Messenger; D016601:RNA-Binding Proteins