Date published: 2026-4-1

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TRIM49B Inhibitors

Chemical inhibitors of TRIM49B function through a variety of mechanisms to impede its activity within the cell. Proteasome inhibitors like MG132 and lactacystin obstruct the proteasome pathway, which is responsible for the degradation of ubiquitinated proteins. This inhibition can lead to the accumulation of these proteins, thus affecting the normal function of TRIM49B if it is involved in tagging proteins for proteasomal degradation. Similarly, epoxomicin, a selective proteasome inhibitor, can target and inhibit the proteasomal activity, potentially impacting the regulatory role of TRIM49B in protein turnover. On the other hand, lysosome-targeting agents such as chloroquine and bafilomycin A1 disrupt normal lysosomal activity by increasing the pH within the lysosome, which can interfere with the lysosome's ability to degrade proteins. If TRIM49B relies on lysosomal degradation pathways for its function or the turnover of its substrates, these inhibitors can impede the ability of TRIM49B to carry out these processes.

Other inhibitors target different aspects of cellular proteolysis. Leupeptin and E64, both inhibitors of serine and cysteine proteases, respectively, can inhibit the proteolytic processing that TRIM49B may require for its activity. The E64 derivative, E-64d, operates in a similar fashion, targeting cysteine proteases that might be necessary for TRIM49B function. 3-Methyladenine, an autophagy inhibitor, prevents the formation of autophagosomes, thus potentially affecting TRIM49B functions related to autophagic degradation. Furthermore, ALLN, an inhibitor of calpains and proteasomal activity, can interfere with TRIM49B if calpain activity or the proteasome is involved in regulating TRIM49B's activity. Lastly, Z-VAD-FMK, a pan-caspase inhibitor, can inhibit the caspase activity that might be involved in the regulation or function of TRIM49B, particularly if it plays a role in apoptotic processes. Concanamycin A, another V-ATPase inhibitor, adds to the disruption of lysosomal acidification, further contributing to the potential inhibition of TRIM49B's functional role in the cell.

SEE ALSO...

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 is a proteasome inhibitor that can lead to the accumulation of ubiquitinated proteins. Since TRIM49B is part of the tripartite motif-containing protein family, which often has E3 ubiquitin ligase activity, MG132 can inhibit TRIM49B's ability to degrade target proteins via the ubiquitin-proteasome pathway.

Chloroquine

54-05-7sc-507304
250 mg
$69.00
2
(0)

Chloroquine is known to alkalize lysosomal pH, which can inhibit lysosomal proteases. If TRIM49B requires lysosomal degradation for its turnover or for degradation of its substrate proteins, chloroquine can inhibit TRIM49B's function by preventing this process.

Leupeptin hemisulfate

103476-89-7sc-295358
sc-295358A
sc-295358D
sc-295358E
sc-295358B
sc-295358C
5 mg
25 mg
50 mg
100 mg
500 mg
10 mg
$73.00
$148.00
$316.00
$499.00
$1427.00
$101.00
19
(3)

Leupeptin is a reversible inhibitor of serine and cysteine proteases. If the activity of TRIM49B depends on the proteolytic processing that involves these proteases, leupeptin can inhibit TRIM49B by blocking this necessary proteolysis.

E-64

66701-25-5sc-201276
sc-201276A
sc-201276B
5 mg
25 mg
250 mg
$281.00
$947.00
$1574.00
14
(0)

E64 is an irreversible inhibitor that targets cysteine proteases. By inhibiting these proteases, E64 can prevent the proteolytic activation or turnover of TRIM49B if it is regulated by cysteine protease activity.

Lactacystin

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

Lactacystin is another proteasome inhibitor that can inhibit the degradation of proteins tagged for destruction. TRIM49B's function may be inhibited by lactacystin if TRIM49B relies on the proteasomal pathway for the regulation of its substrates or its own stability.

Autophagy Inhibitor, 3-MA

5142-23-4sc-205596
sc-205596A
50 mg
500 mg
$65.00
$261.00
113
(3)

3-Methyladenine is an inhibitor of autophagy by blocking autophagosome formation. If TRIM49B function is related to autophagic degradation, 3-Methyladenine can inhibit TRIM49B by disrupting this pathway.

Bafilomycin A1

88899-55-2sc-201550
sc-201550A
sc-201550B
sc-201550C
100 µg
1 mg
5 mg
10 mg
$98.00
$255.00
$765.00
$1457.00
280
(6)

Bafilomycin A1 is an inhibitor of the V-ATPase proton pump, which leads to inhibition of lysosomal acidification. If TRIM49B relies on an acidic lysosomal environment for its activity or stability, bafilomycin A1 can inhibit TRIM49B by neutralizing lysosomal pH.

Z-VAD-FMK

187389-52-2sc-3067
500 µg
$75.00
256
(6)

Z-VAD-FMK is a pan-caspase inhibitor that can inhibit apoptotic pathways. If TRIM49B activity is part of apoptotic signaling or is regulated through caspase-mediated cleavage, Z-VAD-FMK can inhibit TRIM49B by blocking caspase activity.

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 is a selective proteasome inhibitor. If TRIM49B has a role in tagging proteins for degradation or is itself regulated by proteasomal degradation, epoxomicin can inhibit TRIM49B function by preventing proteasome activity.

Concanamycin A

80890-47-7sc-202111
sc-202111A
sc-202111B
sc-202111C
50 µg
200 µg
1 mg
5 mg
$66.00
$167.00
$673.00
$2601.00
109
(2)

Concanamycin A, like bafilomycin A1, is a V-ATPase inhibitor that prevents lysosomal acidification. Concanamycin A can inhibit TRIM49B by disrupting the lysosomal environment that may be crucial for TRIM49B's activity.