Date published: 2026-5-23

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St3Gal-II Activators

St3Gal-II Activators are a diverse array of chemical compounds that work through various biochemical pathways to enhance the glycosylation activity of St3Gal-II. Forskolin increases intracellular cAMP levels, activating PKA, which can phosphorylate proteins within the glycosylation pathway, potentially increasing the functional activity of St3Gal-II. The cAMP analog 8-Bromoadenosine 3',5'-cyclic monophosphate further reinforces this route by providing a stable cAMP analog that activates PKA, supporting the enhanced activity of St3Gal-II in glycoprotein synthesis. MnCl2 acts as a crucial cofactor, optimizing the catalytic efficiency of St3Gal-II. Additionally, the presence of UDP-Galactose directly supplies the necessary substrate for the sialyltransferase activity of St3Gal-II.

The GTP analog GppNHp, by activating GTP-binding proteins, may enhance signaling pathways that indirectly increase St3Gal-II function. ATP is critical for phosphorylation reactions, and its abundance can indirectly upregulate glycosylation processes involving St3Gal-II. S-Adenosylmethionine (SAM) serves as a methyl donor that can impact glycosylation pathways, affecting the activity of St3Gal-II. Tunicamycin, by inhibiting other glycosylation processes, leads to substrate accumulation and a compensatory upregulation of St3Gal-II activity. Lastly, 4-Methylumbelliferyl α-D-N-acetylneuraminide, as a fluorogenic substrate for sialidases, can reflect the activity of St3Gal-II by highlighting the balance between sialylation and desialylation, indirectly inferring the enhanced activity of the sialyltransferase.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Forskolin

66575-29-9sc-3562
sc-3562A
sc-3562B
sc-3562C
sc-3562D
5 mg
50 mg
1 g
2 g
5 g
$78.00
$153.00
$740.00
$1413.00
$2091.00
73
(3)

Forskolin directly stimulates adenylyl cyclase, leading to an increase in intracellular cAMP levels. Elevated cAMP activates PKA, which can phosphorylate various substrates, including those that can enhance the glycosylation processes St3Gal-II is involved in.

8-Bromoadenosine 3′,5′-cyclic monophosphate

23583-48-4sc-217493B
sc-217493
sc-217493A
sc-217493C
sc-217493D
25 mg
50 mg
100 mg
250 mg
500 mg
$108.00
$169.00
$295.00
$561.00
$835.00
2
(1)

This cAMP analog is resistant to degradation and mimics the action of cAMP by activating PKA. This activation can enhance the activity of St3Gal-II by promoting the glycosylation of proteins and lipids which St3Gal-II facilitates.

Manganese(II) chloride beads

7773-01-5sc-252989
sc-252989A
100 g
500 g
$19.00
$31.00
(0)

Manganese chloride is a cofactor that is essential for the optimal activity of glycosyltransferases, including St3Gal-II. The presence of Mn(II) ions can enhance the enzymatic function of St3Gal-II by improving substrate binding and catalysis.

UDP-α-D-Galactose disodium salt

137868-52-1sc-286849
sc-286849A
sc-286849B
10 mg
50 mg
1 g
$104.00
$198.00
$2968.00
1
(0)

Uridine diphosphate galactose (UDP-Galactose) is a direct substrate for St3Gal-II in the biosynthesis of glycosphingolipids and other glycoconjugates. The availability of this sugar nucleotide can enhance the glycosylation activity of St3Gal-II.

Adenosine 5′-Triphosphate, disodium salt

987-65-5sc-202040
sc-202040A
1 g
5 g
$39.00
$75.00
9
(1)

ATP provides the phosphate group in the phosphorylation reactions that are crucial for many signaling pathways. Enhanced phosphorylation can lead to upregulation of glycosylation processes that St3Gal-II is part of.

Ademetionine

29908-03-0sc-278677
sc-278677A
100 mg
1 g
$184.00
$668.00
2
(1)

SAM is a methyl donor in numerous methylation reactions and can influence the glycosylation pathways by methylation of certain substrates, which may affect the activity of St3Gal-II indirectly.

Tunicamycin

11089-65-9sc-3506A
sc-3506
5 mg
10 mg
$172.00
$305.00
66
(3)

Tunicamycin inhibits N-linked glycosylation, which can result in the accumulation of glycoproteins in the ER. This stress response can indirectly enhance the activity of other glycosylation processes, including those catalyzed by St3Gal-II.