Enzymes
| UniProtKB help_outline | 1,306 proteins |
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- Name help_outline L-selenocystathionine Identifier CHEBI:62226 Charge 0 Formula C7H14N2O4Se InChIKeyhelp_outline ZNWYDQPOUQRDLY-WHFBIAKZSA-N SMILEShelp_outline [NH3+][C@@H](CC[Se]C[C@H]([NH3+])C([O-])=O)C([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 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-selenocysteine Identifier CHEBI:57843 Charge 0 Formula C3H7NO2Se InChIKeyhelp_outline ZKZBPNGNEQAJSX-REOHCLBHSA-N SMILEShelp_outline [NH3+][C@@H](C[SeH])C([O-])=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 2-oxobutanoate Identifier CHEBI:16763 Charge -1 Formula C4H5O3 InChIKeyhelp_outline TYEYBOSBBBHJIV-UHFFFAOYSA-M SMILEShelp_outline CCC(=O)C([O-])=O 2D coordinates Mol file for the small molecule Search links Involved in 33 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline NH4+ Identifier CHEBI:28938 (CAS: 14798-03-9) help_outline Charge 1 Formula H4N InChIKeyhelp_outline QGZKDVFQNNGYKY-UHFFFAOYSA-O SMILEShelp_outline [H][N+]([H])([H])[H] 2D coordinates Mol file for the small molecule Search links Involved in 529 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:31151 | RHEA:31152 | RHEA:31153 | RHEA:31154 | |
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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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Enzymatic synthesis of selenocysteine in rat liver.
Esaki N., Nakamura T., Tanaka H., Suzuki T., Morino Y., Soda K.
We have investigated selenocysteine (2-amino-3-hydroselenopropionic acid) synthesis with cystathionine beta-synthase (EC 4.2.1.22) and cystathionine gamma-lyase (EC 4.4.1.1) of rat liver. When selenohomocysteine and serine were incubated with cystathionine beta-synthase, selenocystathionine was fo ... >> More
We have investigated selenocysteine (2-amino-3-hydroselenopropionic acid) synthesis with cystathionine beta-synthase (EC 4.2.1.22) and cystathionine gamma-lyase (EC 4.4.1.1) of rat liver. When selenohomocysteine and serine were incubated with cystathionine beta-synthase, selenocystathionine was formed at a rate of 69% of that of cystathionine synthesis. Cystathionine gamma-lyase catalyzed alpha, gamma elimination of selenocystathionine to yield alpha-ketobutyrate, selenocysteine, and NH3. The reaction rate was about 3 times higher than that of cystathionine elimination. Cystathionine beta-synthase, however, did not catalyze direct formation of selenocysteine from serine and H2Se. Thus, selenocysteine is synthesized from selenohomocysteine and cystathionine beta-synthase and cystathionine gamma-lyase reactions. We confirmed this synthetic pathway also with a mixture of both enzymes and with a homogenate of rat liver. << Less