| Modification Notes |
Ganglioside sialidase is a 428 amino acid protein encoded by the human gene NEU3. Ganglioside sialidase is a peripheral membrane protein that belongs to the glycosyl hydrolase 33 family. Members of this family contain multiple BNR (bacterial neuraminidase repeat) repeats or Asp-boxes. The repeats are short, however the repeats are never found closer than 40 residues together suggesting that the repeat is structurally longer. These repeats are found in a variety of non-homologous proteins, including bacterial ribonucleases, Reelin, netrins, sialidases, neuraminidases, and a variety of glycosyl hydrolases. Ganglioside sialidase plays a role in modulating the ganglioside content of the lipid bilayer at the level of membrane-bound sialyl glycoconjugates. Ganglioside sialidase is responsible for the catalytic hydrolysis of a-glycosidic linkages on terminal sialic residues in oligosaccharides, glycoproteins, glycolipids, colominic acid and synthetic substrates. Ganglioside sialidase is highly expressed in skeletal muscle, testis, adrenal gland and thymus, followed by pancreas, liver, heart and thymus. It is weakly expressed in kidney, placenta, brain and lung. |