Enzymes
| UniProtKB help_outline | 3 proteins |
Reaction participants Show >> << Hide
- Name help_outline cadaverine Identifier CHEBI:58384 Charge 2 Formula C5H16N2 InChIKeyhelp_outline VHRGRCVQAFMJIZ-UHFFFAOYSA-P SMILEShelp_outline C(CC[NH3+])CC[NH3+] 2D coordinates Mol file for the small molecule Search links Involved in 11 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline L-lysine Identifier CHEBI:32551 Charge 1 Formula C6H15N2O2 InChIKeyhelp_outline KDXKERNSBIXSRK-YFKPBYRVSA-O SMILEShelp_outline [NH3+]CCCC[C@H]([NH3+])C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 65 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:28895 | RHEA:28896 | RHEA:28897 | RHEA:28898 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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Publications
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Excretion and uptake of cadaverine by CadB and its physiological functions in Escherichia coli.
Soksawatmaekhin W., Kuraishi A., Sakata K., Kashiwagi K., Igarashi K.
The functions of the putative cadaverine transport protein CadB were studied in Escherichia coli. CadB had both cadaverine uptake activity, dependent on proton motive force, and cadaverine excretion activity, acting as a cadaverine-lysine antiporter. The Km values for uptake and excretion of cadav ... >> More
The functions of the putative cadaverine transport protein CadB were studied in Escherichia coli. CadB had both cadaverine uptake activity, dependent on proton motive force, and cadaverine excretion activity, acting as a cadaverine-lysine antiporter. The Km values for uptake and excretion of cadaverine were 20.8 and 303 microM respectively. Both cadaverine uptake and cadaverine-lysine antiporter activities of CadB were functional in cells. Cell growth of a polyamine-requiring mutant was stimulated slightly at neutral pH by the cadaverine uptake activity and greatly at acidic pH by the cadaverine-lysine antiporter activity. At acidic pH, the operon containing cadB and cadA, encoding lysine decarboxylase, was induced in the presence of lysine. This caused neutralization of the extracellular medium and made possible the production of CO(2) and cadaverine and aminopropylcadaverine instead of putrescine and spermidine. The induction of the cadBA operon also generated a proton motive force. When the cadBA operon was not induced, the expression of the speF-potE operon, encoding inducible ornithine decarboxylase and a putrescine-ornithine antiporter, was increased. The results indicate that the cadBA operon plays important roles in cellular regulation at acidic pH. << Less
Mol. Microbiol. 51:1401-1412(2004) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.