Date published: 2026-5-5

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PIG-H Inhibitors

Inhibitors of PIG-H target various biochemical processes that indirectly reduce the functional activity of this protein, which is central to glycosylphosphatidylinositol (GPI) anchor biosynthesis. One mechanism by which these inhibitors act is by disrupting the post-translational modifications necessary for the maturation and proper localization of proteins that PIG-H requires for its function. This can occur through the inhibition of enzymes like farnesyltransferase, which impacts lipidation, or by impeding proteolytic processing via furin inhibition. Additionally, the manipulation of membrane dynamics is another strategy, where agents that disrupt lipid raft formation within cellular membranes or alter membrane fluidity can impair PIG-H-mediated anchoring processes. Compounds that bind to cholesterol or that act as surfactants are examples of how the biophysical properties of the cellular membranes can be modulated to indirectly inhibit PIG-H activity. Moreover, the structural integrity and function of organelles such as the endoplasmic reticulum (ER) and the Golgi apparatus are essential for the GPI anchor assembly, and thus, for PIG-H's role within that process. Chemicals that induce ER stress or disrupt the normal function of the Golgi can lead to improper folding and trafficking of GPI-anchored proteins. This can result in a failure of PIG-H to catalyze the attachment of GPI anchors to these proteins, since this enzymatic step is tightly coupled with the protein quality control systems of these organelles. In addition, the use of small molecules that interfere with the availability or metabolism of precursors necessary for GPI biosynthesis, such as inositol, ethanolamine, and acyl chains, can also lead to a reduction in PIG-H activity.

Items 1 to 10 of 11 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Manumycin A

52665-74-4sc-200857
sc-200857A
1 mg
5 mg
$219.00
$634.00
5
(1)

Inhibits the enzyme farnesyltransferase, which is crucial for the post-translational modification of proteins associated with cell signaling. PIG-H is dependent on proper protein lipidation for its function; thus, inhibition of farnesyltransferase can indirectly affect PIG-H activity.

Triton X-100

9002-93-1sc-29112
sc-29112A
100 ml
500 ml
$20.00
$42.00
55
(1)

A nonionic surfactant that disrupts lipid rafts in cellular membranes. Since PIG-H is involved in glycolipid anchoring within the membrane, disruption of lipid rafts can impair PIG-H-mediated anchoring processes.

Brefeldin A

20350-15-6sc-200861C
sc-200861
sc-200861A
sc-200861B
1 mg
5 mg
25 mg
100 mg
$31.00
$53.00
$124.00
$374.00
25
(3)

An inhibitor of ADP-ribosylation factor (Arf) proteins, disturbs Golgi apparatus structure and function. As PIG-H is involved in biosynthetic processes that localize to the Golgi, this compound's action can indirectly impact PIG-H's function.

Monensin A

17090-79-8sc-362032
sc-362032A
5 mg
25 mg
$155.00
$525.00
(1)

A carboxylic ionophore that alters intracellular pH and ion gradients, affecting Golgi function. By disrupting the Golgi where PIG-H operates, this compound can indirectly inhibit PIG-H's biosynthetic activity.

Cerulenin (synthetic)

17397-89-6sc-200827
sc-200827A
sc-200827B
5 mg
10 mg
50 mg
$161.00
$312.00
$1210.00
9
(1)

An inhibitor of fatty acid synthase, it hinders the synthesis of fatty acids necessary for lipid biosynthesis. As PIG-H relies on lipid modifications for its function, this compound's inhibition of fatty acid production can indirectly affect PIG-H activity.

Castanospermine

79831-76-8sc-201358
sc-201358A
100 mg
500 mg
$184.00
$632.00
10
(1)

An inhibitor of glucosidases that impedes N-linked glycosylation, a process often preceding PIG-H mediated modifications. This can indirectly inhibit PIG-H by disrupting the glycosylation necessary for its function.

Mevastatin (Compactin)

73573-88-3sc-200853
sc-200853A
10 mg
50 mg
$77.00
$179.00
18
(1)

An HMG-CoA reductase inhibitor, it blocks cholesterol biosynthesis, which can alter membrane composition and fluidity, potentially affecting PIG-H's anchoring capacity.

Tunicamycin

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

An inhibitor of N-linked glycosylation, it can disrupt the glycosylation of proteins that interact with PIG-H, indirectly affecting PIG-H's role in glycan anchor biosynthesis.

Filipin III

480-49-9sc-205323
sc-205323A
500 µg
1 mg
$118.00
$148.00
26
(2)

A polyene macrolide that binds to cholesterol, disrupting lipid raft formation within cell membranes where PIG-H-related activities take place, potentially inhibiting PIG-H's function.

Propranolol

525-66-6sc-507425
100 mg
$180.00
(0)

A β-adrenergic receptor antagonist that also disrupts clathrin-mediated endocytosis, a pathway that might intersect with PIG-H's role in cell membrane dynamics, thereby indirectly inhibiting PIG-H.