Reaction participants Show >> << Hide
- Name help_outline a ganglioside GT1b (d18:1(4E)) Identifier CHEBI:78452 Charge -3 Formula C78H127N5O47R SMILEShelp_outline CCCCCCCCCCCCC\C=C\[C@@H](O)[C@H](CO[C@@H]1O[C@H](CO)[C@@H](O[C@@H]2O[C@H](CO)[C@H](O[C@@H]3O[C@H](CO)[C@H](O)[C@H](O[C@@H]4O[C@H](CO)[C@H](O)[C@H](O[C@@]5(C[C@H](O)[C@@H](NC(C)=O)[C@@H](O5)[C@H](O)[C@H](O)CO)C([O-])=O)[C@H]4O)[C@H]3NC(C)=O)[C@H](O[C@@]3(C[C@H](O)[C@@H](NC(C)=O)[C@@H](O3)[C@H](O)[C@@H](CO)O[C@@]3(C[C@H](O)[C@@H](NC(C)=O)[C@@H](O3)[C@H](O)[C@H](O)CO)C([O-])=O)C([O-])=O)[C@H]2O)[C@H](O)[C@H]1O)NC([*])=O 2D coordinates Mol file for the small molecule Search links Involved in 7 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 6,648 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline a ganglioside GD1b (d18:1(4E)) Identifier CHEBI:87785 Charge -2 Formula C67H111N4O39R SMILEShelp_outline [C@@]1(O[C@]([C@@H]([C@H](C1)O)NC(C)=O)([C@@H]([C@@H](CO)O)O)[H])(C([O-])=O)O[C@@H]([C@H]([C@@]2(O[C@](O[C@H]3[C@H]([C@H](O[C@H]([C@@H]3O)O[C@@H]4[C@H](O[C@@H](OC[C@@H]([C@@H](/C=C/CCCCCCCCCCCCC)O)NC(=O)*)[C@@H]([C@H]4O)O)CO)CO)O[C@H]5[C@@H]([C@H]([C@@H](O)[C@H](O5)CO)O[C@@H]6O[C@@H]([C@@H]([C@@H]([C@H]6O)O)O)CO)NC(C)=O)(C[C@H](O)[C@H]2NC(=O)C)C([O-])=O)[H])O)CO 2D coordinates Mol file for the small molecule Search links Involved in 10 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
- Name help_outline N-acetylneuraminate Identifier CHEBI:35418 Charge -1 Formula C11H18NO9 InChIKeyhelp_outline SQVRNKJHWKZAKO-LUWBGTNYSA-M SMILEShelp_outline [H][C@]1(OC(O)(C[C@H](O)[C@H]1NC(C)=O)C([O-])=O)[C@H](O)[C@H](O)CO 2D coordinates Mol file for the small molecule Search links Involved in 45 reaction(s) Find molecules that contain or resemble this structure Find proteins in UniProtKB for this molecule
Cross-references
| RHEA:47860 | RHEA:47861 | RHEA:47862 | RHEA:47863 | |
|---|---|---|---|---|
| Reaction direction help_outline | undefined | left-to-right | right-to-left | bidirectional |
| UniProtKB help_outline |
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Related reactions help_outline
Specific form(s) of this reaction
Publications
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Substrate specificity and inhibitor studies of a membrane-bound ganglioside sialidase isolated from human brain tissue.
Oehler C., Kopitz J., Cantz M.
A ganglioside-specific sialidase that controls cellular functions such as growth, differentiation, and adhesion has been observed in a variety of cells, but its characterization proved difficult due to firm membrane attachment and lability of the purified enzyme. Here we report on the specificity ... >> More
A ganglioside-specific sialidase that controls cellular functions such as growth, differentiation, and adhesion has been observed in a variety of cells, but its characterization proved difficult due to firm membrane attachment and lability of the purified enzyme. Here we report on the specificity toward gangliosides and susceptibility to certain inhibitors of a ganglioside sialidase solubilized and purified 5100-fold from human brain. The sialidase removed terminal sialic acids from gangliosides GM3, GM4, GD3, GD2, GD1 a, GD1 b, GT1 b and GQ1 b, but was inactive toward gangliosides with sialic acid in a branching position (as in GM1 and GM2). Lyso-GM3 and -GD1a were good substrates, too, whereas O-acetylation of the sialic acid as in 9-O-acetyl-GD3 caused strongly reduced cleavage. The new influenza virus drug 4-guanidino-2-deoxy-2,3-dehydro-N-acetylneuraminic acid (Zanamivir) exhibited an IC50 value of about 7 x 10(-5) M that was in the range of the 'classical' sialidase inhibitor 2-deoxy-2,3-dehydro-N-acetylneuraminic acid; the bacterial sialidase inhibitor 4-nitrophenyloxamic acid, however, was ineffective. The glycosaminoglycans heparan sulfate, heparin, chondroitin sulfates A and B, as well as dextran sulfate and suramin, were all strongly inhibitory, suggesting that glycosaminoglycans present on the cell surface or in the extracellular matrix may influence the ability of the sialidase to alter the ganglioside composition of the membrane. << Less
Biol Chem 383:1735-1742(2002) [PubMed] [EuropePMC]
This publication is cited by 5 other entries.