Date published: 2026-6-14

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EG623286 Inhibitors

NADH:ubiquinone oxidoreductase subunit S6B (Ndufs6b) is a critical component of Complex I in the mitochondrial respiratory chain, contributing to the transfer of electrons from NADH to ubiquinone. This electron transfer process is an essential step in oxidative phosphorylation, a fundamental mechanism that generates adenosine triphosphate (ATP), the primary energy currency of the cell. Complex I, a large multisubunit protein complex embedded in the inner mitochondrial membrane, acts as a molecular machine orchestrating the sequential transfer of electrons along the respiratory chain. Ndufs6b, specifically, plays a significant role in this complex, ensuring the efficient flow of electrons to sustain the proton motive force. The function of Ndufs6b is intricately linked to cellular bioenergetics, as its activity directly influences the establishment of the electrochemical gradient across the mitochondrial inner membrane. This gradient, driven by the pumping of protons out of the mitochondrial matrix during electron transfer, serves as the driving force for ATP synthesis. Ndufs6b's involvement underscores its importance in maintaining cellular energy homeostasis, making it a key player in mitochondrial physiology.

Inhibition of Ndufs6b can occur through various mechanisms, either directly targeting Complex I or indirectly influencing related pathways. Direct inhibitors act by disrupting the electron transfer within Complex I, obstructing the flow of electrons from NADH to ubiquinone. Indirect inhibitors, on the other hand, modulate cellular processes or target components associated with mitochondrial function, leading to an indirect impact on Ndufs6b. These mechanisms encompass interference with oxidative stress, proton motive force disruption, or alteration of substrate availability. The intricate interplay of these inhibitory mechanisms provides a nuanced understanding of how cellular and biochemical processes can influence Ndufs6b activity, revealing potential avenues for further exploration into the regulation of mitochondrial respiration and energy metabolism.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Rotenone

83-79-4sc-203242
sc-203242A
1 g
5 g
$89.00
$259.00
41
(2)

Rotenone directly inhibits Ndufs6b by targeting Complex I of the mitochondrial electron transport chain. It binds to the ubiquinone-binding site, disrupting electron transfer and consequently inhibiting Ndufs6b, leading to impaired oxidative phosphorylation.

Piericidin A

2738-64-9sc-202287
2 mg
$291.00
24
(1)

Piericidin A is a direct inhibitor of Ndufs6b, acting on Complex I. It interferes with the transfer of electrons from NADH to ubiquinone, disrupting the normal function of Ndufs6b and hindering the flow of electrons through the respiratory chain.

Mito-Q

444890-41-9sc-507441
5 mg
$290.00
(0)

Mitoquinone, a mitochondria-targeted antioxidant, indirectly inhibits Ndufs6b by scavenging reactive oxygen species (ROS). By reducing oxidative stress, it prevents ROS-induced damage to Complex I, indirectly preserving the activity of Ndufs6b within the mitochondrial respiratory chain.

Carbonyl Cyanide m-Chlorophenylhydrazone

555-60-2sc-202984A
sc-202984
sc-202984B
100 mg
250 mg
500 mg
$77.00
$153.00
$240.00
8
(1)

CCCP indirectly inhibits Ndufs6b by disrupting mitochondrial membrane potential. By acting as a protonophore, CCCP dissipates the electrochemical gradient, impacting the functionality of Complex I indirectly, which includes Ndufs6b within the mitochondrial respiratory chain.

Antimycin A

1397-94-0sc-202467
sc-202467A
sc-202467B
sc-202467C
5 mg
10 mg
1 g
3 g
$55.00
$63.00
$1675.00
$4692.00
51
(1)

Antimycin A is a direct inhibitor of Ndufs6b, specifically targeting Complex III. By binding to the Qi site, it obstructs the transfer of electrons, resulting in the inhibition of Complex I through retrograde signaling, subsequently affecting the activity of Ndufs6b.

Sodium azide

26628-22-8sc-208393
sc-208393B
sc-208393C
sc-208393D
sc-208393A
25 g
250 g
1 kg
2.5 kg
100 g
$43.00
$155.00
$393.00
$862.00
$90.00
8
(2)

Sodium Azide directly inhibits Ndufs6b by binding to heme groups within Complex IV. This prevents the transfer of electrons from cytochrome c to oxygen, causing a disruption in the electron transport chain and subsequently inhibiting Ndufs6b activity.

Oligomycin

1404-19-9sc-203342
sc-203342C
10 mg
1 g
$149.00
$12495.00
18
(2)

Oligomycin A directly inhibits Ndufs6b by acting on Complex V, the ATP synthase. It blocks the proton channel, preventing ATP synthesis. This inhibition of ATP production indirectly impacts Ndufs6b by disrupting the proton motive force, affecting mitochondrial respiration.

2-Deoxy-D-glucose

154-17-6sc-202010
sc-202010A
1 g
5 g
$70.00
$215.00
26
(2)

2-Deoxy-D-glucose indirectly inhibits Ndufs6b by disrupting glycolysis. By acting as a competitive inhibitor of glucose, it reduces substrate availability for the electron transport chain, leading to a decrease in mitochondrial respiration and an indirect impact on Ndufs6b activity.

UK 5099

56396-35-1sc-361394
sc-361394A
10 mg
50 mg
$236.00
$987.00
5
(1)

UK-5099 indirectly inhibits Ndufs6b by targeting the mitochondrial pyruvate carrier (MPC). By inhibiting pyruvate transport into the mitochondria, it limits the availability of pyruvate as a substrate for the tricarboxylic acid cycle, indirectly impacting Ndufs6b activity.

3-Nitropropionic acid

504-88-1sc-214148
sc-214148A
1 g
10 g
$82.00
$459.00
(1)

3-Nitropropionic acid (3-NPA) is a direct inhibitor of Ndufs6b by inhibiting succinate dehydrogenase in Complex II. It irreversibly binds to the enzyme, disrupting the electron transfer, leading to a cascade effect on the mitochondrial respiratory chain and ultimately inhibiting Ndufs6b.