N6-methyl-adenine: an epigenetic signal for DNA-protein interactions

Tipo de material: Texto

TextoSeries ; Nature Reviews MicroBiology, 4(3), p.183-192, 2006Trabajos contenidos:

Wion, D
Casadesús, J

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Resumen: N6-methyl-adenine is found in the genomes of bacteria, archaea, protists and fungi. Most bacterial DNA adenine methyltransferases are part of restriction-modification systems. Certain groups of Proteobacteria also harbour solitary DNA adenine methyltransferases that provide signals for DNA-protein interactions. In ã-proteobacteria, Dam methylation regulates chromosome replication, nucleoid segregation, DNA repair, ransposition of insertion elements and transcription of specific genes. In Salmonella, Haemophilus, Yersinia and Vibrio species and in pathogenic Escherichia coli, Dam methylation is required for virulence. In á-proteobacteria, CcrM methylation regulates the cell cycle in Caulobacter, hizobium and Agrobacterium, and has a role in Brucella abortus infection.

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N6-methyl-adenine is found in the genomes of bacteria, archaea, protists and fungi. Most bacterial DNA adenine methyltransferases are part of restriction-modification systems. Certain groups of Proteobacteria also harbour solitary DNA adenine methyltransferases that provide signals for DNA-protein interactions. In ã-proteobacteria, Dam methylation regulates chromosome replication, nucleoid segregation, DNA repair, ransposition of insertion elements and transcription of specific genes. In Salmonella, Haemophilus, Yersinia and Vibrio species and in pathogenic Escherichia coli, Dam methylation is required for virulence. In á-proteobacteria, CcrM methylation regulates the cell cycle in Caulobacter, hizobium and Agrobacterium, and has a role in Brucella abortus infection.

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