Enzymes
| UniProtKB help_outline | 2,235 proteins |
| GO Molecular Function help_outline |
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- Name help_outline L-cysteine Identifier CHEBI:35235 Charge 0 Formula C3H7NO2S InChIKeyhelp_outline XUJNEKJLAYXESH-REOHCLBHSA-N SMILEShelp_outline [NH3+][C@@H](CS)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 71 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- 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 1,328 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H2O Identifier CHEBI:15377 (CAS: 7732-18-5) help_outline Charge 0 Formula H2O InChIKeyhelp_outline XLYOFNOQVPJJNP-UHFFFAOYSA-N SMILEShelp_outline [H]O[H] 2D coordinates Mol file for the small molecule Search links Involved in 6,485 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline ADP Identifier CHEBI:456216 (Beilstein: 3783669) help_outline Charge -3 Formula C10H12N5O10P2 InChIKeyhelp_outline XTWYTFMLZFPYCI-KQYNXXCUSA-K SMILEShelp_outline Nc1ncnc2n(cnc12)[C@@H]1O[C@H](COP([O-])(=O)OP([O-])([O-])=O)[C@@H](O)[C@H]1O 2D coordinates Mol file for the small molecule Search links Involved in 865 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline phosphate Identifier CHEBI:43474 Charge -2 Formula HO4P InChIKeyhelp_outline NBIIXXVUZAFLBC-UHFFFAOYSA-L SMILEShelp_outline OP([O-])([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 1,029 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline H+ Identifier CHEBI:15378 Charge 1 Formula H InChIKeyhelp_outline GPRLSGONYQIRFK-UHFFFAOYSA-N SMILEShelp_outline [H+] 2D coordinates Mol file for the small molecule Search links Involved in 9,932 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:29783 | RHEA:29784 | RHEA:29785 | RHEA:29786 | |
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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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Cysteine is exported from the Escherichia coli cytoplasm by CydDC, an ATP-binding cassette-type transporter required for cytochrome assembly.
Pittman M.S., Corker H., Wu G., Binet M.B., Moir A.J., Poole R.K.
Assembly of Escherichia coli cytochrome bd and periplasmic cytochromes requires the ATP-binding cassette transporter CydDC, whose substrate is unknown. Two-dimensional SDS-PAGE comparison of periplasm from wild-type and cydD mutant strains revealed that the latter was deficient in several periplas ... >> More
Assembly of Escherichia coli cytochrome bd and periplasmic cytochromes requires the ATP-binding cassette transporter CydDC, whose substrate is unknown. Two-dimensional SDS-PAGE comparison of periplasm from wild-type and cydD mutant strains revealed that the latter was deficient in several periplasmic transport binding proteins, but no single major protein was missing in the cydD periplasm. Instead, CydDC exports from cytoplasm to periplasm the amino acid cysteine, demonstrated using everted membrane vesicles that transported radiolabeled cysteine inward in an ATP-dependent, uncoupler-independent manner. New pleiotropic cydD phenotypes are reported, including sensitivity to benzylpenicillin and dithiothreitol, and loss of motility, consistent with periplasmic defects in disulfide bond formation. Exogenous cysteine reversed these phenotypes and affected levels of periplasmic c-type cytochromes in cydD and wild-type strains but did not restore cytochrome d. Consistent with CydDC being a cysteine exporter, cydD mutant growth was hypersensitive to high cysteine concentrations and accumulated higher cytoplasmic cysteine levels, as did a mutant defective in orf299, encoding a transporter of the major facilitator superfamily. A cydD orf299 double mutant was extremely cysteine-sensitive and had higher cytoplasmic cysteine levels, whereas CydDC overexpression conferred resistance to high extracellular cysteine concentrations. We propose that CydDC exports cysteine, crucial for redox homeostasis in the periplasm. << Less
J. Biol. Chem. 277:49841-49849(2002) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.