Date published: 2026-5-9

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BRIDGE-1 Inhibitors

Chemical inhibitors of BRIDGE-1 target the proteasomal degradation pathway, which is essential for the recycling of proteins within the cell. BRIDGE-1 plays a role in this process, and its functional inhibition can result from the accumulation of proteins that are normally marked for degradation. For instance, MG132 is a peptide aldehyde that interferes with the proteasome's ability to degrade ubiquitinated proteins, leading to an accumulation of these proteins and indirectly inhibiting the functional role of BRIDGE-1 in the proteasome. Similarly, Lactacystin, a natural product from Streptomyces bacteria, binds irreversibly to proteasomal subunits, preventing the normal turnover of proteins, thereby affecting the pathways in which BRIDGE-1 is involved. Epoxomicin, a more selective proteasome inhibitor, forms a covalent adduct with the proteasome, and this action impedes BRIDGE-1's associated proteolytic functions. Moreover, Bortezomib and its analog Carfilzomib bind with high affinity to the proteasome, with Carfilzomib causing irreversible inhibition. Their binding specificity to the proteasome's chymotrypsin-like site leads to a disruption of normal proteasome function, which indirectly hinders BRIDGE-1's role in proteolytic degradation. Oprozomib, an orally bioavailable inhibitor, and Marizomib, which binds irreversibly, both lead to similar consequences on the proteasome function, thereby indirectly inhibiting BRIDGE-1 by altering the dynamics of proteasome-mediated protein turnover. Delanzomib, another boronic acid-based inhibitor, and Ixazomib, which inhibits the 20S proteasome, both cause a build-up of proteins due to inhibited degradation pathways, affecting BRIDGE-1's functional activity.
Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

MG-132 [Z-Leu- Leu-Leu-CHO]

133407-82-6sc-201270
sc-201270A
sc-201270B
5 mg
25 mg
100 mg
$60.00
$265.00
$1000.00
163
(3)

MG132 impedes the proteasomal degradation pathway, which is essential for the turnover of many proteins, including BRIDGE-1. By inhibiting the proteasome, MG132 causes an accumulation of ubiquitinated proteins, indirectly preventing BRIDGE-1 from facilitating its normal proteolytic functions.

Lactacystin

133343-34-7sc-3575
sc-3575A
200 µg
1 mg
$188.00
$575.00
60
(2)

Lactacystin specifically inhibits the proteasome's catalytic activity, which would result in the accumulation of proteins that are normally degraded. This accumulation can indirectly inhibit BRIDGE-1's function by disrupting the proteolytic processes it's involved in.

Epoxomicin

134381-21-8sc-201298C
sc-201298
sc-201298A
sc-201298B
50 µg
100 µg
250 µg
500 µg
$137.00
$219.00
$449.00
$506.00
19
(2)

Epoxomicin forms a covalent bond with the proteasome, leading to irreversible inhibition. The consequent build-up of proteins that require regulated degradation indirectly impairs the functional role of BRIDGE-1 in the proteasome complex.

Bortezomib

179324-69-7sc-217785
sc-217785A
2.5 mg
25 mg
$135.00
$1085.00
115
(2)

Bortezomib binds to the 26S proteasome with high affinity and specificity, inhibiting its chymotrypsin-like activity. This inhibition can interfere with the proteasome's ability to degrade substrates, a process in which BRIDGE-1 is involved, thereby indirectly inhibiting BRIDGE-1.

Carfilzomib

868540-17-4sc-396755
5 mg
$41.00
(0)

Carfilzomib irreversibly binds to and inhibits the proteasome's chymotrypsin-like site. This impedes the degradation of polyubiquitinated proteins, indirectly inhibiting BRIDGE-1 by disrupting the proteolytic cycle in which it participates.

Oprozomib

935888-69-0sc-477447
2.5 mg
$280.00
(0)

Oprozomib, an bioavailable proteasome inhibitor, targets and inhibits the activity of the proteasome. This inhibition can lead to an accumulation of proteins involved in various signaling pathways, indirectly inhibiting the function of BRIDGE-1 by altering proteasome dynamics.

Delanzomib, free base

847499-27-8sc-396774
sc-396774A
5 mg
10 mg
$160.00
$300.00
(0)

Delanzomib is a boronic acid-based proteasome inhibitor. By inhibiting the proteasome, Delanzomib indirectly inhibits BRIDGE-1 by causing a build-up of proteins that BRIDGE-1 would normally help to degrade.

Ixazomib

1072833-77-2sc-489103
sc-489103A
10 mg
50 mg
$311.00
$719.00
(0)

Ixazomib selectively and reversibly inhibits the 20S proteasome. The proteasome's reduced activity leads to an increase in undegraded proteins, which can indirectly inhibit the functional activity of BRIDGE-1 within the proteasome complex.