Enzymes
| UniProtKB help_outline | 1 proteins |
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- Name help_outline L-rhamnono-1,4-lactone Identifier CHEBI:17937 Charge 0 Formula C6H10O5 InChIKeyhelp_outline VASLEPDZAKCNJX-KLVWXMOXSA-N SMILEShelp_outline [H][C@]1(OC(=O)[C@H](O)[C@@H]1O)[C@H](C)O 2D coordinates Mol file for the small molecule Search links Involved in 3 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 6,264 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline L-rhamnonate Identifier CHEBI:58118 Charge -1 Formula C6H11O6 InChIKeyhelp_outline NBFWIISVIFCMDK-QMKXCQHVSA-M SMILEShelp_outline C[C@H](O)[C@H](O)[C@@H](O)[C@@H](O)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 2 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 9,521 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:10288 | RHEA:10289 | RHEA:10290 | RHEA:10291 | |
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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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Eukaryotic and bacterial gene clusters related to an alternative pathway of nonphosphorylated L-rhamnose metabolism.
Watanabe S., Saimura M., Makino K.
The Entner-Doudoroff (ED) pathway is a classic central pathway of d-glucose metabolism in all three phylogenetic domains. On the other hand, Archaea and/or bacteria possess several modified versions of the ED pathway, in which nonphosphorylated intermediates are involved. Several fungi, including ... >> More
The Entner-Doudoroff (ED) pathway is a classic central pathway of d-glucose metabolism in all three phylogenetic domains. On the other hand, Archaea and/or bacteria possess several modified versions of the ED pathway, in which nonphosphorylated intermediates are involved. Several fungi, including Pichia stipitis and Debaryomyces hansenii, possess an alternative pathway of L-rhamnose metabolism, which is different from the known bacterial pathway. Gene cluster related to this hypothetical pathway was identified by bioinformatic analysis using the metabolic enzymes involved in analogous sugar pathways to the ED pathway. Furthermore, the homologous gene cluster was found not only in many other fungi but also several bacteria, including Azotobacter vinelandii. Four putative metabolic genes, LRA1-4, were cloned, overexpressed in Escherichia coli, and purified. Substrate specificity and kinetic analysis revealed that nonphosphorylated intermediates related to L-rhamnose are significant active substrates for the purified LRA1-4 proteins. Furthermore, L-2-keto-3-deoxyrhamnonate was structurally identified as both reaction products of dehydration by LRA3 and aldol condensation by LRA4. These results suggested that the LRA1-4 genes encode L-rhamnose 1-dehydrogenase, L-rhamnono-gamma-lactonase, L-rhamnonate dehydratase, and L-KDR aldolase, respectively, by which L-rhamnose is converted into pyruvate and L-lactaldehyde through analogous reaction steps to the ED pathway. There was no evolutionary relationship between L-KDR aldolases from fungi and bacteria. << Less
J. Biol. Chem. 283:20372-20382(2008) [PubMed] [EuropePMC]
This publication is cited by 2 other entries.