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Tyrosine Phosphorylation as a Widespread Regulatory Mechanism in Prokaryotes

期刊

JOURNAL OF BACTERIOLOGY
卷 201, 期 19, 页码 -

出版社

AMER SOC MICROBIOLOGY
DOI: 10.1128/JB.00205-19

关键词

SH2 domain; cell biology; pathogenesis; phosphorylation; protein chaperone; protein tyrosine binding domain; proteomics; transcriptional regulation; tyrosine kinase

资金

  1. Natural Sciences and Engineering Research Council of Canada (NSERC) [RGPIN/05807-2019]
  2. Dalhousie Medical Research Foundation (DMRF)
  3. NSERC [RGPIN/05907-2017]

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Phosphorylation events modify bacterial and archaeal proteomes, imparting cells with rapid and reversible responses to specific environmental stimuli or niches. Phosphorylated proteins are generally modified at one or more serine, threonine, or tyrosine residues. Within the last ten years, increasing numbers of global phosphoproteomic surveys of prokaryote species have revealed an abundance of tyrosine-phosphorylated proteins. In some cases, novel phosphorylation-dependent regulatory paradigms for cell division, gene transcription, and protein translation have been identified, suggesting that a wide scope of prokaryotic physiology remains to be characterized. Recent observations of bacterial proteins with putative phosphotyrosine binding pockets or Src homology 2 (SH2)-like domains suggest the presence of phosphotyrosine-dependent protein interaction networks. Here in this minireview, we focus on protein tyrosine phosphorylation, a posttranslational modification once thought to be rare in prokaryotes but which has emerged as an important regulatory facet in microbial biology.

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