Article (Scientific journals)
Mutants of Chlamydomonas reinhardtii deficient in mitochondrial complex I: Characterization of two mutations affecting the nd1 coding sequence
Remacle, Claire; Baurain, Denis; Cardol, Pierre et al.
2001In Genetics, 158 (3), p. 1051-60
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Abstract :
[en] The mitochondrial rotenone-sensitive NADH:ubiquinone oxidoreductase (complex I) comprises more than 30 subunits, the majority of which are encoded by the nucleus. In Chlamydomonas reinhardtii, only five components of complex I are coded for by mitochondrial genes. Three mutants deprived of complex I activity and displaying slow growth in the dark were isolated after mutagenic treatment with acriflavine. A genetical analysis demonstrated that two mutations (dum20 and dum25) affect the mitochondrial genome whereas the third mutation (dn26) is of nuclear origin. Recombinational analyses showed that dum20 and dum25 are closely linked on the genetic map of the mitochondrial genome and could affect the nd1 gene. A sequencing analysis confirmed this conclusion: dum20 is a deletion of one T at codon 243 of nd1; dum25 corresponds to a 6-bp deletion that eliminates two amino acids located in a very conserved hydrophilic segment of the protein.
Disciplines :
Genetics & genetic processes
Author, co-author :
Remacle, Claire  ;  Université de Liège - ULiège > Département des sciences de la vie > Génétique
Baurain, Denis  ;  Université de Liège - ULiège > Département de Botanique > Génétique des microorganismes
Cardol, Pierre  ;  Université de Liège - ULiège > Département des sciences de la vie > Biochimie végétale
Matagne, René-Fernand ;  Université de Liège - ULiège > Services généraux (Faculté des sciences) > Relations académiques et scientifiques (Sciences)
Language :
English
Title :
Mutants of Chlamydomonas reinhardtii deficient in mitochondrial complex I: Characterization of two mutations affecting the nd1 coding sequence
Publication date :
July 2001
Journal title :
Genetics
ISSN :
0016-6731
eISSN :
1943-2631
Publisher :
Genetics Society of America, United States - Maryland
Volume :
158
Issue :
3
Pages :
1051-60
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 30 November 2009

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