title: Identification of an Arabidopsis mitochondrial succinate-fumarate translocator.
abstract: Complementation of a yeast acr1 mutant carrying a deletion of the succinate/fumarate carrier gene enabled functional identification of a mitochondrial succinate translocator from Arabidopsis thaliana (AtmSFC1). Thus complementation of yeast mutants is applicable also for identification and characterization of organellar transporters. Reverse transcription polymerase chain reaction and promoter-GUS fusion showed expression of AtmSFC1 in 2 day old dark grown seedlings, which declined in cotyledons during further development, consistent with a role in export of fumarate for gluconeogenesis during lipid mobilization at early germination of Arabidopsis seeds. In mature plants, expression was found in developing and germinating pollen, suggesting a role in ethanolic fermentation.
authors.affiliation: Plant Physiology, ZMBP, Auf der Morgenstelle 1, 72076 Tübingen, Germany.
authors.forename: Elisabetta
authors.initials: E
authors.lastname: Catoni
authors.forename: Rebecca
authors.initials: R
authors.lastname: Schwab
authors.forename: Melanie
authors.initials: M
authors.lastname: Hilpert
authors.forename: Marcelo
authors.initials: M
authors.lastname: Desimone
authors.forename: Rainer
authors.initials: R
authors.lastname: Schwacke
authors.forename: Ulf Ingo
authors.initials: UI
authors.lastname: Flügge
authors.forename: Karin
authors.initials: K
authors.lastname: Schumacher
authors.forename: Wolf B
authors.initials: WB
authors.lastname: Frommer
mesh_terms: D000595:Amino Acid Sequence; D017360:Arabidopsis / Q000235:genetics / Q000378:metabolism*; D029681:Arabidopsis Proteins / Q000235:genetics* / Q000378:metabolism*; D050976:Basic-Leucine Zipper Transcription Factors; D002352:Carrier Proteins / Q000235:genetics* / Q000378:metabolism*; D003001:Cloning, Molecular / Q000379:methods; D004268:DNA-Binding Proteins / Q000235:genetics / Q000378:metabolism; D005650:Fumarates / Q000378:metabolism; D018506:Gene Expression Regulation, Plant; D005816:Genetic Complementation Test; D008928:Mitochondria / Q000378:metabolism*; D024101:Mitochondrial Proteins / Q000235:genetics* / Q000378:metabolism*; D008969:Molecular Sequence Data; D009154:Mutation; D010802:Phylogeny; D018515:Plant Leaves / Q000235:genetics / Q000378:metabolism; D011401:Promoter Regions, Genetic; D011993:Recombinant Fusion Proteins / Q000235:genetics / Q000378:metabolism; D012097:Repressor Proteins / Q000235:genetics / Q000378:metabolism; D029701:Saccharomyces cerevisiae Proteins; D012639:Seeds / Q000235:genetics / Q000378:metabolism; D019802:Succinic Acid / Q000378:metabolism; D015003:Yeasts / Q000235:genetics
chemical_list: D029681:Arabidopsis Proteins; D050976:Basic-Leucine Zipper Transcription Factors; D002352:Carrier Proteins; D004268:DNA-Binding Proteins; D005650:Fumarates; D024101:Mitochondrial Proteins; D011993:Recombinant Fusion Proteins; D012097:Repressor Proteins; C077832:SKO1 protein, S cerevisiae; D029701:Saccharomyces cerevisiae Proteins; C032005:fumaric acid; D019802:Succinic Acid