Reaction participants Show >> << Hide
- Name help_outline ATP Identifier CHEBI:30616 (Beilstein: 3581767) help_outline Charge -4 Formula C10H12N5O13P3 InChIKeyhelp_outline ZKHQWZAMYRWXGA-KQYNXXCUSA-J SMILEShelp_outline Nc1ncnc2n(cnc12)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 1,355 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline adenosine 3'-diphosphate,5'-triphosphate Identifier CHEBI:145540 Charge -6 Formula C10H12N5O19P5 InChIKeyhelp_outline BEZXPSZCIDIMAS-KQYNXXCUSA-H SMILEShelp_outline NC1=NC=NC2=C1N=CN2[C@@H]3O[C@H](COP(=O)(OP(=O)(OP(=O)([O-])[O-])[O-])[O-])[C@H]([C@H]3O)OP(OP([O-])(=O)O)(=O)[O-] 2D coordinates Mol file for the small molecule Search links Involved in 1 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline AMP Identifier CHEBI:456215 Charge -2 Formula C10H12N5O7P InChIKeyhelp_outline UDMBCSSLTHHNCD-KQYNXXCUSA-L SMILEShelp_outline Nc1ncnc2n(cnc12)[C@@H]1O[C@H](COP([O-])([O-])=O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 545 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:59820 | RHEA:59821 | RHEA:59822 | RHEA:59823 | |
|---|---|---|---|---|
| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
| UniProtKB help_outline |
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Publications
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An interbacterial toxin inhibits target cell growth by synthesizing (p)ppApp.
Ahmad S., Wang B., Walker M.D., Tran H.R., Stogios P.J., Savchenko A., Grant R.A., McArthur A.G., Laub M.T., Whitney J.C.
Bacteria have evolved sophisticated mechanisms to inhibit the growth of competitors<sup>1</sup>. One such mechanism involves type VI secretion systems, which bacteria can use to inject antibacterial toxins directly into neighbouring cells. Many of these toxins target the integrity of the cell enve ... >> More
Bacteria have evolved sophisticated mechanisms to inhibit the growth of competitors<sup>1</sup>. One such mechanism involves type VI secretion systems, which bacteria can use to inject antibacterial toxins directly into neighbouring cells. Many of these toxins target the integrity of the cell envelope, but the full range of growth inhibitory mechanisms remains unknown<sup>2</sup>. Here we identify a type VI secretion effector, Tas1, in the opportunistic pathogen Pseudomonas aeruginosa. The crystal structure of Tas1 shows that it is similar to enzymes that synthesize (p)ppGpp, a broadly conserved signalling molecule in bacteria that modulates cell growth rate, particularly in response to nutritional stress<sup>3</sup>. However, Tas1 does not synthesize (p)ppGpp; instead, it pyrophosphorylates adenosine nucleotides to produce (p)ppApp at rates of nearly 180,000 molecules per minute. Consequently, the delivery of Tas1 into competitor cells drives rapid accumulation of (p)ppApp, depletion of ATP, and widespread dysregulation of essential metabolic pathways, thereby resulting in target cell death. Our findings reveal a previously undescribed mechanism for interbacterial antagonism and demonstrate a physiological role for the metabolite (p)ppApp in bacteria. << Less
Nature 575:674-678(2019) [PubMed] [EuropePMC]
This publication is cited by 2 other entries.