TY - JOUR AU1 - Figueroa, Pablo AU2 - Léon, Gabriel AU3 - Elorza, Alvaro AU4 - Holuigue, Loreto AU5 - Araya, Alejandro AU6 - Jordana, Xavier AB - Mitochondrial respiratory complex II contains four subunits: a flavoprotein (SDH1), an iron-sulphur subunit (SDH2) and two membrane anchor subunits (SDH3 and SDH4). We have found that in Arabidopsis thaliana SDH1 and SDH3 are encoded by two, and SDH4 by one nuclear genes, respectively. All these encoded polypeptides are found to be imported into isolated plant mitochondria. While both SDH1 proteins are highly conserved when compared to their counterparts in other organisms, SDH3 and SDH4 share little similarity with non-plant homologues. Expression of SDH1-1, SDH3 and SDH4 genes was detected in all tissues analysed, with the highest steady-state mRNA levels found in flowers and inflorescences. In contrast, the second SDH1 gene (SDH1-2) is expressed at a low level. TI - The four subunits of mitochondrial respiratory complex II are encoded by multiple nuclear genes and targeted to mitochondria in Arabidopsis thaliana JF - Plant Molecular Biology DO - 10.1023/A:1019926301981 DA - 2004-10-13 UR - https://www.deepdyve.com/lp/springer-journals/the-four-subunits-of-mitochondrial-respiratory-complex-ii-are-encoded-xB9jOFFlgi SP - 725 EP - 734 VL - 50 IS - 5 DP - DeepDyve ER -