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Mannosylglucosylglycerate biosynthesis in the deep-branching phylum Planctomyce...
Cunha, Sofia; Avó, Ana Filipa d’; Mingote, Ana; Lamarosa, Pedro; Costa, M. S. da; Costa, J.The biosynthetic pathway for the rare compatible solute mannosylglucosylglycerate (MGG) accumulated by Rhodopirellula baltica, a marine member of the phylumPlanctomycetes, has been elucidated. Like one of the pathways used in the thermophilic bacterium Petrotoga mobilis, it has genes coding for glucosyl-3-phosphoglycerate synthase (GpgS) and mannosylglucosyl-3-phosphoglycerate (MGPG) synthase (MggA). However, u...
Organic solutes in Rubrobacter xylanophilus : the first example of di- myo -in...
Empadinhas, Nuno; Mendes, Vítor; Simões, Catarina; Santos, Maria; Mingote, Ana; Lamosa, Pedro; Santos, Helena; Costa, MiltonAbstract The thermophilic and halotolerant nature of Rubrobacter xylanophilus led us to investigate the accumulation of compatible solutes in this member of the deepest lineage of the Phylum Actinobacteria. Trehalose and mannosylglycerate (MG) were the major compounds accumulated under all conditions examined, including those for optimal growth. The addition of NaCl to a complex medium and a defined medium had...
Mannosylglycerate is essential for osmotic adjustment in Thermus thermophilus ...
Alarico, Susana; Empadinhas, Nuno; Mingote, Ana; Simões, Catarina; Santos, Maria; Costa, Milton daAbstract We disrupted the mpgS encoding mannosyl-3-phosphoglycerate synthase (MpgS) of Thermus thermophilus strains HB27 and RQ-1, by homologous recombination, to assess the role of the compatible solute mannosylglycerate (MG) in osmoadaptation of the mutants, to examine their ability to grow in NaCl-containing medium and to identify the intracellular organic solutes. Strain HB27 accumulated only MG when grown...
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