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The genes for the acetate-activating enzymes, acetate kinase and phosphotransacetylase (ack and pta), from Methanosarcina thermophila TM-1 were cloned and sequenced. Both genes are present in only one copy per genome, with the pta gene adjacent to and upstream of the ack gene. Consensus archaeal promoter sequences are found upstream of the pta coding(More)
A gene (isf) encoding an iron-sulfur flavoprotein (Isf) from Methanosarcina thermophila was cloned and sequenced. The gene was located directly upstream of the genes (pta and ack) encoding phosphotransacetylase and acetate kinase and is transcribed in the opposite direction. The amino acid sequence deduced from isf contained a cluster of cysteine residues(More)
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