Enzymes
| UniProtKB help_outline | 4 proteins |
Reaction participants Show >> << Hide
- Name help_outline a ganglioside GT1c (d18:1(4E)) Identifier CHEBI:87789 Charge -3 Formula C78H127N5O47R SMILEShelp_outline [C@@]1(O[C@]([C@@H]([C@H](C1)O)NC(C)=O)([C@@H]([C@H](O[C@]2(O[C@]([C@@H]([C@H](C2)O)NC(C)=O)([C@@H]([C@@H](CO)O[C@]3(O[C@]([C@@H]([C@H](C3)O)NC(C)=O)([C@@H]([C@@H](CO)O)O)[H])C(=O)[O-])O)[H])C(=O)[O-])CO)O)[H])(C([O-])=O)O[C@H]4[C@H]([C@H](O[C@H]([C@@H]4O)O[C@@H]5[C@H](O[C@@H](OC[C@@H]([C@@H](/C=C/CCCCCCCCCCCCC)O)NC(=O)*)[C@@H]([C@H]5O)O)CO)CO)O[C@H]6[C@@H]([C@H]([C@@H](O)[C@H](O6)CO)O[C@H]7[C@@H]([C@@H](O)[C@H]([C@H](O7)CO)O)O)NC(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 CMP-N-acetyl-β-neuraminate Identifier CHEBI:57812 (Beilstein: 5899715) help_outline Charge -2 Formula C20H29N4O16P InChIKeyhelp_outline TXCIAUNLDRJGJZ-BILDWYJOSA-L SMILEShelp_outline [H][C@]1(O[C@](C[C@H](O)[C@H]1NC(C)=O)(OP([O-])(=O)OC[C@H]1O[C@H]([C@H](O)[C@@H]1O)n1ccc(N)nc1=O)C([O-])=O)[C@H](O)[C@H](O)CO 2D coordinates Mol file for the small molecule Search links Involved in 91 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline a ganglioside GQ1c (d18:1(4E)) Identifier CHEBI:87791 Charge -4 Formula C89H143N6O55R SMILEShelp_outline [C@@]1(O[C@]([C@@H]([C@H](C1)O)NC(C)=O)([C@@H]([C@H](O[C@]2(O[C@]([C@@H]([C@H](C2)O)NC(C)=O)([C@@H]([C@@H](CO)O[C@]3(O[C@]([C@@H]([C@H](C3)O)NC(C)=O)([C@@H]([C@@H](CO)O)O)[H])C(=O)[O-])O)[H])C(=O)[O-])CO)O)[H])(C([O-])=O)O[C@H]4[C@H]([C@H](O[C@H]([C@@H]4O)O[C@@H]5[C@H](O[C@@H](OC[C@@H]([C@@H](/C=C/CCCCCCCCCCCCC)O)NC(=O)*)[C@@H]([C@H]5O)O)CO)CO)O[C@H]6[C@@H]([C@H]([C@@H](O)[C@H](O6)CO)O[C@H]7[C@@H]([C@@H](O[C@]8(O[C@]([C@@H]([C@H](C8)O)NC(C)=O)([C@@H]([C@H](O)CO)O)[H])C([O-])=O)[C@H]([C@H](O7)CO)O)O)NC(C)=O 2D coordinates Mol file for the small molecule Search links Involved in 5 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline CMP Identifier CHEBI:60377 Charge -2 Formula C9H12N3O8P InChIKeyhelp_outline IERHLVCPSMICTF-XVFCMESISA-L SMILEShelp_outline Nc1ccn([C@@H]2O[C@H](COP([O-])([O-])=O)[C@@H](O)[C@H]2O)c(=O)n1 2D coordinates Mol file for the small molecule Search links Involved in 173 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 9,717 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:47588 | RHEA:47589 | RHEA:47590 | RHEA:47591 | |
|---|---|---|---|---|
| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
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| MetaCyc help_outline |
Related reactions help_outline
More general form(s) of this reaction
Publications
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Characterization of sialyltransferase-IV activity and its involvement in the c-pathway of brain ganglioside metabolism.
Freischuetz B., Saito M., Rahmann H., Yu R.K.
To characterize the sialyltransferase-IV activity in brain tissues, the activities of GM1b-, GD1a-, GT1b-, and GQ1c-synthases in adult cichlid fish and rat brains were examined using GA1, GM1, GD1b, or a cod brain ganglioside mixture as the substrate. The GD1a-synthase activity in the total membra ... >> More
To characterize the sialyltransferase-IV activity in brain tissues, the activities of GM1b-, GD1a-, GT1b-, and GQ1c-synthases in adult cichlid fish and rat brains were examined using GA1, GM1, GD1b, or a cod brain ganglioside mixture as the substrate. The GD1a-synthase activity in the total membrane fraction from cichlid fish brain required divalent cations such as Mg2+ or Mn2+ and Triton CF-54 for its full activity. The Vmax value was 1,340 pmol/mg of protein/h at an optimal pH of 6.5, whereas the apparent Km values for CMP-sialic acid and GM1 were 172 and 78 microM, respectively. Cichlid fish and rat brains also contained GM1b-, GT1b-, and GQ1c-synthase activities. The ratio of GM1b-, GD1a-, and GT1b-synthase activities in fish brain was 1.00:0.89:1.13, respectively, and in rat brain 1.00:0.60:0.63. Incubation of fish brain membranes with a cod brain ganglioside mixture, which contains GT1c, and [3H]CMP-sialic acid produced radiolabeled GQ1c. It is interesting that the adult rat brain also contains an appreciable level of GQ1c-synthase activity despite its very low concentrations of c-series gangliosides. The GD1a- or GQ1c-synthase activity in fish and rat brain was inhibited specifically by coincubation with the glycolipids that serve as the substrates for other sialyltransferase-IV reactions. Thus, the GD1a-synthase activity was inhibited by GA1 and GD1b, but not by LacCer, GM3, or GD3. In a similar manner, the synthesis of GQ1c was suppressed by GA1, GM1, and GD1b, but not by LacCer, GM3, or GD3.(ABSTRACT TRUNCATED AT 250 WORDS) << Less
J. Neurochem. 64:385-393(1995) [PubMed] [EuropePMC]
This publication is cited by 1 other entry.