title: Three rat brain alternative splicing dynamin-like protein variants: interaction with the glycogen synthase kinase 3beta and action as a substrate.
abstract: Dynamin-like protein, a large GTP-binding protein, has recently been cloned, and studies have shown that it may be involved in the formation of coated vesicles. In this report, three different alternatively spliced dynamin-like protein variants (DLP1-WT, -11, and -37) from rat brain were identified by reverse transcription/polymerase chain reaction (RT-PCR). One novel rat alternatively spliced variant (DLP1-37), not described previously, was identified. We examined the interaction of these three rat brain dynamin-like protein variants with glycogen synthase kinase 3beta (Gsk-3beta) using the yeast two-hybrid screening, in vitro binding assay, and immunoprecipitation analysis. It was found that all three examined rat brain dynamin-like protein variants can bind to Gsk-3beta. Moreover, in vitro kinase (phosphorylation) assay showed that mammalian dynamin-like protein acts as a substrate for glycogen synthase kinase 3beta. These data suggest that Gsk-3beta may participate in a functional role in dynamin-like proteins in vesicle trafficking.
authors.affiliation: Graduate Institute of Biochemistry, Neurosurgery Department, Kaohsiung Medical University, Kaohsiung, Taiwan, 807, Republic of China.
authors.forename: C H
authors.initials: CH
authors.lastname: Chen
authors.forename: S L
authors.initials: SL
authors.lastname: Hwang
authors.forename: S L
authors.initials: SL
authors.lastname: Howng
authors.forename: C K
authors.initials: CK
authors.lastname: Chou
authors.forename: Y R
authors.initials: YR
authors.lastname: Hong
mesh_terms: D017398:Alternative Splicing; D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D001921:Brain / Q000378:metabolism*; D017871:Calcium-Calmodulin-Dependent Protein Kinases / Q000378:metabolism*; D003001:Cloning, Molecular; D017931:DNA Primers / Q000235:genetics; D034281:Dynamins; D020558:GTP Phosphohydrolases / Q000378:metabolism; D014644:Genetic Variation; D038362:Glycogen Synthase Kinase 3; D038341:Glycogen Synthase Kinases; D066298:In Vitro Techniques; D008869:Microtubule-Associated Proteins; D008969:Molecular Sequence Data; D010766:Phosphorylation; D011506:Proteins / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism*; D051381:Rats; D011993:Recombinant Fusion Proteins / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D017386:Sequence Homology, Amino Acid; D013379:Substrate Specificity; D020798:Two-Hybrid System Techniques
chemical_list: D017931:DNA Primers; D008869:Microtubule-Associated Proteins; D011506:Proteins; D011993:Recombinant Fusion Proteins; D038341:Glycogen Synthase Kinases; D017871:Calcium-Calmodulin-Dependent Protein Kinases; D038362:Glycogen Synthase Kinase 3; D020558:GTP Phosphohydrolases; C519851:Dnm1l protein, rat; D034281:Dynamins