The F1FO ATP synthase genes in Methanosarcina acetivorans are dispensable for growth and ATP synthesis.
There is a long-standing discussion in the literature, based on biochemical and genomic data, whether some archaeal species may have two structurally and functionally distinct ATP synthases in one cell: the archaeal A(1)A(O) together with the bacterial F(1)F(O) ATP synthase. To address a potential role of the bacterial F(1)F(O) ATP synthase, we have exchanged the F(1)F(O) ATPase gene cluster in Methanosarcina acetivorans against a puromycin resistance cassette. Interestingly, the mutant was able to grow with no difference in growth kinetics to the wild type, and cellular ATP contents were identical in the wild type and the mutant. These data demonstrate that the F(1)F(O) ATP synthase is dispensable for the growth of M. acetivorans.
Molecular Microbiology & Bioenergetics, Institute of Molecular Biosciences, Johann Wolfgang Goethe-University Frankfurt, Max-von-Laue-Strasse 9, Frankfurt am Main, Germany.
Regina
R
Saum
Katharina
K
Schlegel
Benjamin
B
Meyer
Volker
V
Müller
D000255:Adenosine Triphosphate / Q000096:biosynthesis*; D017353:Gene Deletion; D019766:Genes, Archaeal; D017020:Methanosarcina / Q000235:genetics / Q000254:growth & development / Q000378:metabolism / Q000502:physiology*; D050296:Microbial Viability; D025261:Mitochondrial Proton-Translocating ATPases / Q000235:genetics* / Q000378:metabolism*; D005810:Multigene Family; D016254:Mutagenesis, Insertional
D000255:Adenosine Triphosphate; C474451:F1F0-ATP synthase; D025261:Mitochondrial Proton-Translocating ATPases