Enzymes
| UniProtKB help_outline | 9 proteins |
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- Name help_outline (2R,3R)-tartrate Identifier CHEBI:30924 (Beilstein: 3906378; CAS: 87-69-4) help_outline Charge -2 Formula C4H4O6 InChIKeyhelp_outline FEWJPZIEWOKRBE-JCYAYHJZSA-L SMILEShelp_outline O[C@H]([C@@H](O)C([O-])=O)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 6 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline succinate Identifier CHEBI:30031 (CAS: 56-14-4) help_outline Charge -2 Formula C4H4O4 InChIKeyhelp_outline KDYFGRWQOYBRFD-UHFFFAOYSA-L SMILEShelp_outline [O-]C(=O)CCC([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 340 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:29259 | RHEA:29260 | RHEA:29261 | RHEA:29262 | |
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| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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| EcoCyc help_outline |
Publications
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The L-tartrate/succinate antiporter TtdT (YgjE) of L-tartrate fermentation in Escherichia coli.
Kim O.B., Unden G.
Escherichia coli ferments L-tartrate under anaerobic conditions in the presence of an additional electron donor to succinate. The carrier for L-tartrate uptake and succinate export and its relation to the general C(4)-dicarboxylate carriers DcuA, DcuB, and DcuC were studied. The secondary carrier ... >> More
Escherichia coli ferments L-tartrate under anaerobic conditions in the presence of an additional electron donor to succinate. The carrier for L-tartrate uptake and succinate export and its relation to the general C(4)-dicarboxylate carriers DcuA, DcuB, and DcuC were studied. The secondary carrier TtdT, encoded by the ttdT (previously called ygjE) gene, is required for the uptake of L-tartrate. The ttdT gene is located downstream of the ttdA and ttdB genes, encoding the L-tartrate dehydratase TtdAB. Analysis of mRNA by reverse transcription-PCR showed that ttdA, ttdB, and ttdT are cotranscribed. Deletion of ttdT abolished growth by L-tartrate and degradation of L-tartrate completely. Bacteria containing TtdT catalyze L-tartrate or succinate uptake and specific heterologous L-tartrate/succinate antiporting. D-Tartrate is not a substrate for TtdT. TtdT operates preferentially in the direction of tartrate uptake and succinate excretion. The Dcu carriers do not support anaerobic growth on L-tartrate or L-tartrate transport. TtdT is related in sequence and function to CitT, which catalyzes heterologous citrate/succinate antiporting in citrate fermentation. << Less