Summary

Name ST3GAL5
Full Name Lactosylceramide alpha-2,3-sialyltransferase
Synonyms CMP-NeuAc:lactosylceramide alpha-2,3-sialyltransferase, Ganglioside GM3 synthase, ST3Gal V, ST3GalV, Sialyltransferase 9 | SIAT9
Primary ID Q9UNP4
Links - -
Type protein
Relations 1
Function Transfers the sialyl group (N-acetyl-alpha-neuraminyl or NeuAc) from CMP-NeuAc to the non-reducing terminal galactose (Gal) of glycosphingolipids forming gangliosides (important molecules involved in the regulation of multiple cellular processes, including cell proliferation and differentiation, apoptosis, embryogenesis, development, and oncogenesis) (PubMed:9822625, PubMed:16934889). Mainly involved in the biosynthesis of ganglioside GM3 but can also use different glycolipids as substrate acceptors such as D-galactosylceramide (GalCer), asialo-GM2 (GA2) and asialo-GM1 (GA1), although less preferentially than beta-D-Gal-(1->4)-beta-D-Glc-(1<->1)-Cer (LacCer) (PubMed:16934889).

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Relations

Regulator Mechanism target score
+ up-regulates quantity by expression img/indirect-activation.png transcriptional regulation ST3GAL5 0.2
Publications: 1 Organism: Homo Sapiens