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(alpha-N-acetylneuraminyl-2,3-beta-galactosyl-1,3)-N-acetyl-galactosaminide 6-alpha-sialyltransferase
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alpha-N-acetylneuraminyl-2,3-beta-galactosyl-1,3-N-acetyl-galactosaminide alpha-2,6-sialyltransferase
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CMP-N-acetylneuraminate:(alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3)-N-acetyl-D-galactosaminide alpha-2,6-N-acetylneuraminyl-transferase
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cytidine monophosphoacetylneuraminate-(alpha-N-acetylneuraminyl-2,3-beta-galactosyl-1,3)-N-acetylgalactosaminide-alpha-2,6-sialyltransferase
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EC 2.4.99.7
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formerly
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NeuAc-alpha-2,3-Gal-beta-1,3-GalNAc-alpha-2,6-sialyltransferase
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sialyltransferase
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sialyltransferase 3C
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sialyltransferase 7D
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sialyltransferase, cytidine monophosphoacetylneuraminate-(alpha-N-acetylneuraminyl-2,3-beta-galactosyl-1,3)-N-acetylgalactosaminide-alpha-2,6-sialyltransferase
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ST6GalNAc III
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ST6GalNAc IV
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ST6GalNAc V
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ST6GalNAc VI
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additional information
the enzyme belongs to the ST6GalNAc family
additional information
the enzyme belongs to the ST6GalNAc family
additional information
the enzyme belongs to the ST6GalNAc family
additional information
the enzyme belongs to the ST6GalNAc family
additional information
the enzyme belongs to the ST6GalNAc family
additional information
the enzyme belongs to the ST6GalNAc family
additional information
the enzyme belongs to the ST6GalNAc family
additional information
the enzyme belongs to the ST6GalNAc family
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CMP-N-acetyl-beta-neuraminate + Neu5Acalpha2-3Galbeta1-3GalNacalpha-O-benzyl
?
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?
CMP-N-acetylneuraminate + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R
CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-(N-acetylneuraminyl-2,6)-N-acetyl-D-galactosaminyl-R
CMP-N-acetylneuraminate + alpha1-acid glycoprotein
?
acceptor structur: Neu5Acalpha2-6Galbeta1-4GlcNac-R, 8.7% of activity with fetuin
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?
CMP-N-acetylneuraminate + fetuin
?
acceptor structures: Neu5Acalpha2-3Galbeta1-3GalNacalpha1-O-Ser/Thr, Neu5Acalpha2-3Galbeta1-3[Neu5Acalpha2-6]GalNacalpha1-O-Ser/Thr and Neu5Acalpha2-6(3)Galbeta1-4GlcNac-R
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?
CMP-N-acetylneuraminate + GlcNac-alpha1-O-benzyl
?
7.6% of activity with fetuin
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?
CMP-N-acetylneuraminate + GM1b
CMP + ?
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?
CMP-N-acetylneuraminate + monosialylgalactosylgloboside
CMP + disialylgalactosylgloboside
isoforms ST6GalNAc III and ST6GalNAc VI generate disialylgalactosylgloboside from monosialylgalactosylgloboside with Vmax/Km values of 1.91 and 4.16 respectively
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?
CMP-N-acetylneuraminate + N-alpha-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R
CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-(N-acetylneuraminyl-2,6)-N-acetyl-D-galactosaminyl-R
CMP-N-acetylneuraminate + Neu5Acalpha2-3Galbeta1-3GalNac
?
60.3% of activity with fetuin
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?
CMP-N-acetylneuraminate + Neu5Acalpha2-3Galbeta1-4GlcNac-alpha1-O-benzyl
?
224% of activity with fetuin
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?
CMP-N-acetylneuraminate + NeuAc-alpha-(2->3)-Gal-beta-(1->3)-GalNAc
?
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?
CMP-N-acetylneuraminate + sialyl lactoetraosylceramide
CMP + ?
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product are disialyl Lewis a structures
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?
CMP-NAC + monosialylgalactosylgloboside
CMP + disialylgalactosylgloboside
CMP-Neu5Ac + fetuin
?
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ST6GalNAc III also shows activity with O-glycans, but not N-glycans, in fetuin
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?
CMP-Neu5Ac + Galbeta1,3GlcNAcbeta1,3Galbeta1,4Glcbeta1-Cer
?
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?
CMP-Neu5Ac + Galbeta1,4GlcNAcbeta1,3Galbeta1,4Glcbeta1-Cer
?
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?
CMP-Neu5Ac + GM1b
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i.e. NeuAcalpha2,3Galbeta1,3GalNAcbeta1,4Galbeta1,4Glcbeta1-Cer, best substrate
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?
CMP-NeuAc + glycoprotein
?
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?
CMP-NeuAc + glycosphingolipid
?
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?
additional information
?
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CMP-N-acetylneuraminate + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R
CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-(N-acetylneuraminyl-2,6)-N-acetyl-D-galactosaminyl-R
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pathway in glycoprotein biosynthesis
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?
CMP-N-acetylneuraminate + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R
CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-(N-acetylneuraminyl-2,6)-N-acetyl-D-galactosaminyl-R
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pathway in glycoprotein biosynthesis
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?
CMP-N-acetylneuraminate + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R
CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-(N-acetylneuraminyl-2,6)-N-acetyl-D-galactosaminyl-R
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pathway in glycoprotein biosynthesis
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?
CMP-N-acetylneuraminate + N-alpha-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R
CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-(N-acetylneuraminyl-2,6)-N-acetyl-D-galactosaminyl-R
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no substrates are beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R or N-acetylgalactosylaminyl-R
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?
CMP-N-acetylneuraminate + N-alpha-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R
CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-(N-acetylneuraminyl-2,6)-N-acetyl-D-galactosaminyl-R
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attaches sialic acid in alpha-2,6-linkage to N-acetylgalactosamine only when present in the structure of alpha-N-acetylneuraminyl-2,3-beta-galactosyl-1,3-N-acetylgalactosaminyl-R
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?
CMP-N-acetylneuraminate + N-alpha-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R
CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-(N-acetylneuraminyl-2,6)-N-acetyl-D-galactosaminyl-R
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R can be a protein or p-nitrophenol
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?
CMP-N-acetylneuraminate + N-alpha-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R
CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-(N-acetylneuraminyl-2,6)-N-acetyl-D-galactosaminyl-R
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substrates are sialylated antifreeze glycoprotein as well as N-acetyl-D-galactosamine or beta-galactosyl-1,3-N-acetyl-D-galactosamine side chains from ovine submaxillary asialomucin or porcine submaxillary asialo/afucomucin respectively
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?
CMP-N-acetylneuraminate + N-alpha-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R
CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-(N-acetylneuraminyl-2,6)-N-acetyl-D-galactosaminyl-R
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?
CMP-N-acetylneuraminate + N-alpha-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R
CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-(N-acetylneuraminyl-2,6)-N-acetyl-D-galactosaminyl-R
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attaches sialic acid in alpha-2,6-linkage to N-acetylgalactosamine only when present in the structure of alpha-N-acetylneuraminyl-2,3-beta-galactosyl-1,3-N-acetylgalactosaminyl-R
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?
CMP-N-acetylneuraminate + N-alpha-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R
CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-(N-acetylneuraminyl-2,6)-N-acetyl-D-galactosaminyl-R
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?
CMP-NAC + monosialylgalactosylgloboside
CMP + disialylgalactosylgloboside
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?
CMP-NAC + monosialylgalactosylgloboside
CMP + disialylgalactosylgloboside
the enzyme is responsible for the synthesis of disialylgalactosylgloboside from monosialylgalactosylgloboside in normal and malignant kidney cells, the reaction suppressed during the malignant transformation of the proximal tubules as a maturation arrest of glycosylation, overview
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?
additional information
?
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enzyme is responsible for synthesis of disialyl Lewis a structures in colon tissues, but not for synthesis of alpha-series gangliosides, model of pathway for synthesis of disialyl lactoetraosylceramides and disialyl Lewis a structures
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?
additional information
?
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substrate specificity, no activity with GA1, GA2, GM1, GM2, GD3, GT1b, GQ1b, and Lc4, overview
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?
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CMP-N-acetylneuraminate + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R
CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-(N-acetylneuraminyl-2,6)-N-acetyl-D-galactosaminyl-R
CMP-N-acetylneuraminate + NeuAc-alpha-(2->3)-Gal-beta-(1->3)-GalNAc
?
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?
CMP-NAC + monosialylgalactosylgloboside
CMP + disialylgalactosylgloboside
the enzyme is responsible for the synthesis of disialylgalactosylgloboside from monosialylgalactosylgloboside in normal and malignant kidney cells, the reaction suppressed during the malignant transformation of the proximal tubules as a maturation arrest of glycosylation, overview
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?
additional information
?
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enzyme is responsible for synthesis of disialyl Lewis a structures in colon tissues, but not for synthesis of alpha-series gangliosides, model of pathway for synthesis of disialyl lactoetraosylceramides and disialyl Lewis a structures
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?
CMP-N-acetylneuraminate + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R
CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-(N-acetylneuraminyl-2,6)-N-acetyl-D-galactosaminyl-R
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pathway in glycoprotein biosynthesis
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?
CMP-N-acetylneuraminate + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R
CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-(N-acetylneuraminyl-2,6)-N-acetyl-D-galactosaminyl-R
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pathway in glycoprotein biosynthesis
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?
CMP-N-acetylneuraminate + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-N-acetyl-D-galactosaminyl-R
CMP + alpha-N-acetylneuraminyl-2,3-beta-D-galactosyl-1,3-(N-acetylneuraminyl-2,6)-N-acetyl-D-galactosaminyl-R
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pathway in glycoprotein biosynthesis
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?
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Epstein-Barr virus transformed cell line
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expression of ST6GalNAc VI
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expression of ST6GalNAc VI
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renal cancer cell line, expression of ST6GalNAc VI
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constitutive expression of ST6GalNac IV gene
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expression of ST6GalNAc VI
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expression of ST6GalNAc VI
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constitutive expression of ST6GalNac IV gene
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constitutive expression of ST6GalNac IV gene
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expression of ST6GalNAc III
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expression of ST6GalNAc VI
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activity is 4 times lower in adult than in embryonic brain
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constitutive expression of ST6GalNac IV gene
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expression of ST6GalNAc VI
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constitutive expression of STGalNac IV gene
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expression of ST6GalNAc VI
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constitutive expression of ST6GalNac IV gene
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in proximal tubule epithelial cells, expression of ST6GalNAc III
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in proximal tubule epithelial cells, expression of ST6GalNAc VI
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isoform ST6GalNAc-VI and disialylgalactosylgloboside are found in proximal tubule epithelial cells in normal kidney tissues
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fetal
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constitutive expression of ST6GalNac IV gene
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expression of ST6GalNAc VI
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constitutive expression of ST6GalNac IV gene
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expression of ST6GalNAc VI
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renal cancer cell line, expression of ST6GalNAc VI
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constitutive expression of ST6GalNac IV gene
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expression of ST6GalNAc VI
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renal cancer cell line, expression of ST6GalNAc VI
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renal cancer cell line, expression of ST6GalNAc VI
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renal cancer cell line, expression of ST6GalNAc VI
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renal cancer cell line, expression of ST6GalNAc VI
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renal cancer cell line, expression of ST6GalNAc VI
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renal cancer cell line, expression of ST6GalNAc VI
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renal cancer cell line, expression of ST6GalNAc VI
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renal cancer cell line, expression of ST6GalNAc VI
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renal cancer cell line, expression of ST6GalNAc VI
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constitutive expression of ST6GalNac IV gene
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expression of ST6GalNAc VI
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constitutive expression of ST6GalNac IV gene
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expression of ST6GalNAc VI
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additional information
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ST6GalNAc III tissue expression pattern, in situ hybridization, overview
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additional information
ST6GalNAc III tissue expression pattern, in situ hybridization, overview
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additional information
ST6GalNAc III tissue expression pattern, in situ hybridization, overview
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additional information
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ST6GalNAc VI tissue expression pattern, ST6GalNAc VI is downregulated in renal cancer cell lines and cancer tissues, in situ hybridization, overview
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additional information
ST6GalNAc VI tissue expression pattern, ST6GalNAc VI is downregulated in renal cancer cell lines and cancer tissues, in situ hybridization, overview
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additional information
ST6GalNAc VI tissue expression pattern, ST6GalNAc VI is downregulated in renal cancer cell lines and cancer tissues, in situ hybridization, overview
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additional information
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tissue distribution of isozyme expression
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Bergh, M.L.E.; van den Eijnden, D.H.
Aglycon specificity of fetal calf liver and ovine and porcine submaxillary gland alpha-N-acetylgalactosaminide alpha 2 leads to 6 sialyltransferase
Eur. J. Biochem.
136
113-118
1983
Bos taurus
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Higgins, E.A.; Siminovitch, K.A.; Zhuang, D.; Brockhausen, I.; Dennis, J.W.
Aberrant O-linked oligosaccharide biosynthesis in lymphocytes and platelets from patients with the Wiskott-Aldrich syndrome
J. Biol. Chem.
266
6280-6290
1991
Homo sapiens
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Bergh, M.L.E.; Hooghwinkel, G.J.M.; Van den Eijnden, D.H.
Biosynthesis of the O-glycosidically linked oligosaccharide chains of fetuin. Indications for an alpha-N-acetylgalactosaminide alpha 2 leads to 6 sialyltransferase with a narrow acceptor specificity in fetal calf liver
J. Biol. Chem.
258
7430-7436
1983
Bos taurus, Ovis aries
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Baubichon-Cortay, H.; Broquet, P.; George, P.; Louisot, P.
Different reactivity of two brain sialyltransferases towards sulfhydryl reagents. Evidence for a thiol group involved in the nucleotide-sugar binding site of the NeuAc alpha 2-3Gal beta 1-3GalNAc alpha(2-6)sialyltransferase
Glycoconjugate J.
6
115-127
1989
Rattus norvegicus
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Dall'olio, F.
Sialyltransferases of developing rat brain
Glycoconjugate J.
7
301-310
1990
Rattus norvegicus
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Takashima, S.; Kurosawa, N.; Tachida, Y.; Inoue, M.; Tsuji, S.
Comparative analysis of the genomic structures and promoter activities of mouse Siaa2,3Galb1,3GalNAc GalNAca2,6-sialyltransferase genes (ST6GalNAc III and IV): characterization of their Sp1 binding sites
J. Biochem.
127
399-409
2000
Mus musculus
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Harduin-Lepers, A.; Stokes, D.C.; Steelant, W.F.A.; Samyn-Petit, B.; Krzewinski-Recchi, M.A.; Vallejo-Ruiz, V.; Zanetta, J.P.; Auge, C.; Delannoy, P.
Cloning, expression and gene organization of a human Neu5Aca2-3Galb1-3GalNAc a2,6-sialyltransferase: hST6GalNAc IV
Biochem. J.
352
37-48
2000
Homo sapiens (Q9H4F1), Homo sapiens
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Tsuchida, A.; Okajima, T.; Furukawa, K.; Ando, T.; Ishida, H.; Yoshida, A.; Nakamura, Y.; Kannagi, R.; Kiso, M.
Synthesis of disialyl Lewis a (Le(a)) structure in colon cancer cell lines by a sialyltransferase, ST6GalNAc VI, responsible for the synthesis of alpha-series gangliosides
J. Biol. Chem.
278
22787-22794
2003
Homo sapiens
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Senda, M.; Ito, A.; Tsuchida, A.; Hagiwara, T.; Kaneda, T.; Nakamura, Y.; Kasama, K.; Kiso, M.; Yoshikawa, K.; Katagiri, Y.; Ono, Y.; Ogiso, M.; Urano, T.; Furukawa, K.; Oshima, S.; Furukawa, K.
Identification and expression of a sialyltransferase responsible for the synthesis of disialylgalactosylgloboside in normal and malignant kidney cells: downregulation of ST6GalNAc VI in renal cancers
Biochem. J.
402
459-470
2007
Homo sapiens, Homo sapiens (Q8NDV1), Homo sapiens (Q969X2)
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Harduin-Lepers, A.; Mollicone, R.; Delannoy, P.; Oriol, R.
The animal sialyltransferases and sialyltransferase-related genes: a phylogenetic approach
Glycobiology
15
21G
2005
Danio rerio (Q5NDG1), Danio rerio (Q6ZXX8), Danio rerio (Q6ZXY7), Danio rerio (Q704S4), Homo sapiens (Q8NDV1), Homo sapiens (Q969X2), Homo sapiens (Q9BVH7), Homo sapiens (Q9H4F1)
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Tsuchida, A.; Ogiso, M.; Nakamura, Y.; Kiso, M.; Furukawa, K.; Furukawa, K.
Molecular cloning and expression of human ST6GalNAc III: restricted tissue distribution and substrate specificity
J. Biochem.
138
237-243
2005
Homo sapiens
brenda
Wang, L.; Liu, Y.; Wu, L.; Sun, X.L.
Sialyltransferase inhibition and recent advances
Biochim. Biophys. Acta
1864
143-153
2016
Homo sapiens
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