Oxidative Phosphorylation

Oxidative phosphorylation is a cellular process that harnesses the reduction of oxygen to generate high-energy phosphate bonds in the form of adenosine triphosphate (ATP). It is a series of oxidation-reduction reactions that involve the transfer electrons from NADH and FADH2 to oxygen across several protein, metal, and lipid complexes in the mitochondria known as the electron transport chain (ETC). The electron transport chain utilizes NADH and FADH2 generated from several catabolic cellular processes. Also, oxidative phosphorylation utilizes elemental oxygen as the final oxidizing agent (and electron acceptor). Mitochondrial function and the electron transport chain shed light on the evolution and advancement of aerobic eukaryotic life, especially when compared to anaerobic organisms. It is the hallmark of aerobic respiration and is the reason why a plethora of lifeforms require oxygen to survive.
Most of the usable energy obtained from the breakdown of carbohydrates or fats is derived by oxidative phosphorylation, which takes place within mitochondria. For example, the breakdown of glucose by glycolysis and the citric acid cycle yields a total of four molecules of ATP, ten molecules of NADH, and two molecules of FADH2. Electrons from NADH and FADH2 are then transferred to molecular oxygen, coupled to the formation of an additional 32 to 34 ATP molecules by oxidative phosphorylation. Electron transport and oxidative phosphorylation are critical activities of protein complexes in the inner mitochondrial membrane, which ultimately serve as the major source of cellular energy^[1]^[2].

References:

[1]. Deshpande OA, et, al. Biochemistry, Oxidative Phosphorylation. July 31, 2023.

[2]. The Cell: A Molecular Approach. 2nd edition.

Oxidative Phosphorylation Inhibitors (9)

Oxidative Phosphorylation Related Products (73):

Cat. No.	Product Name	Effect	Purity	Chemical Structure

HY-145306

DX3-234
DX3-234 is an oxidative phosphorylation (OXPHOS) inhibitor. DX3-234 shows significant tumor suppression in the Pan02 syngeneic model of pancreatic cancer.

HY-N6687A

Calcimycin hemicalcium salt
Calcimycin hemicalcium salt (A-23187 hemicalcium salt) is an antibiotic and a unique divalent cation ionophore (like calcium and magnesium). Calcimycin hemicalcium salt induces Ca²⁺-dependent cell death by increasing intracellular calcium concentration. Calcimycin hemicalcium salt inhibits the growth of Gram-positive bacteria and some fungi. Calcimycin hemicalcium salt also inhibits the activity of ATPase and uncouples oxidative phosphorylation (OXPHOS) of mammalian cells. Calcimycin hemicalcium salt induces apoptosis.

HY-155554

SCAL-255
SCAL-255 is a potent mitochondrial complex I (CI) inhibitor with IC₅₀ of 1.14 μM. SCAL-255 blocks mitochondrial function, inhibits OCR, induces ROS production, and reduces MMP. SCAL-255 displays a considerable antiproliferation effect against oxidative phosphorylation (OXPHOS)-dependent cancer cells.

HY-111321

Fuscin
Fuscin, a fungal metabolite, CCR5 receptor antagonist with anti-HIV effects. Fuscin is a respiration and oxidative phosphorylation inhibitor, and also a mitochondrial SH-dependent transport-linked functions inhibitor.

HY-17598R

Rafoxanide (Standard)
Rafoxanide (Standard) is the analytical standard of Rafoxanide. This product is intended for research and analytical applications. Rafoxanide is a poent, orally active halogenated salicylaniline agent with antiparasitic activity. Rafoxanide interferes with energy metabolism in trematodes by uncoupling oxidative phosphorylation. Rafoxanide is also found to be a potent inhibitor of the BRAF V600E mutant protein, which is important in colorectal cancer. Rafoxanide can be used for the control of infestation with Hemonchus species or Fasciola species in sheep and cattle as well as Oestrus ovis in sheep. Rafoxanide can also be used for cancer research.

HY-114293

Acetyl coenzyme A
Acetyl-coenzyme A (Acetyl-CoA) is a membrane-impermeant central metabolic intermediate, participates in the TCA cycle and oxidative phosphorylation metabolism. Acetyl-coenzyme A, regulates various cellular mechanisms by providing (sole donor) acetyl groups to target amino acid residues for post-translational acetylation reactions of proteins. Acetyl Coenzyme A is also a key precursor of lipid synthesis.

HY-13653S

(+/-)-Epigallocatechin Gallate-¹³C₃
(+/-)-Epigallocatechin Gallate-¹³C₃ is the ¹³C-labeled (-)-Epigallocatechin Gallate. (-)-Epigallocatechin Gallate is a tea flavonoid with potent antioxidant, antiinflammatory, and anticarcinogenic properties. (-)-Epigallocatechin Gallate is reported to inhibit EGFR signaling and thereby exert anticancer effects[1]. (-)-Epigallocatechin Gallate (EGCG) is a glutamate dehydrogenase 1/2 (GDH1/2, GLUD1/2) inhibitor. Epigallocatechin-3-gallate induces oxidative phosphorylation (OXPHOS) by activating cytochrome c oxidase.

HY-145304

DX3-235
DX3-235 is an oxidative phosphorylation (OXPHOS) inhibitor. DX3-235 shows nanomolar inhibition of complex I function and ATP production in a galactose-containing medium resulting in significant cytotoxicity.

HY-17594R

Oxyclozanide (Standard)
Oxyclozanide (Standard) is the analytical standard of Oxyclozanide. This product is intended for research and analytical applications. Oxyclozanide is an orally active salicylanilide anthelmintic agent that mainly acts by uncoupling oxidative phosphorylation in flukes. Oxyclozanide shows good anti-adenovirus, anti-biofilm, antifungal, and antibacterial activity.

HY-B0831S

Buprofezin-d₆
Buprofezin-d₆ is the deuterium labeled Buprofezin. Buprofezin is a broad-spectrum insecticide and chitin synthesis inhibitor that targets developmental stage coleopteran pests.Buprofezin promotes the conversion of energy metabolism from the aerobic tricarboxylic acid (TCA) cycle and oxidative phosphorylation to anaerobic glycolysis. Buprofezin also promotes the production of reactive oxygen species (ROS) by inhibiting cytochrome c oxidase[1][2].

HY-155555

SCAL-266
SCAL-266 is a potent mitochondrial complex I (CI) inhibitor with IC₅₀ of 0.83 μM. SCAL-266 blocks mitochondrial function, inhibits OCR, induces ROS production, and reduces MMP. SCAL-266 displays a considerable antiproliferation effect against oxidative phosphorylation (OXPHOS)-dependent cancer cells.

HY-B1729S1

Phenoxyethanol-d₄	Inhibitor
Phenoxyethanol-d₄ is the deuterium labeled Phenoxyethanol[1]. Phenoxyethanol has a broad spectrum of antimicrobial activity against various gram-negative and gram-positive bacteria. Phenoxyethanol is an uncouple agent in oxidative phosphorylation from respiration and competitively inhibits malate dehydrogenase. Phenoxyethanol is used as a preservative in cosmetic, vaccine, and textile, et al[2].

HY-N6687B

Calcimycin hemimagnesium
Calcimycin (A-23187) hemimagnesium is an antibiotic and a unique divalent cation ionophore (like calcium and magnesium). Calcimycin hemimagnesium induces Ca²⁺-dependent cell death by increasing intracellular calcium concentration. Calcimycin hemimagnesium inhibits the growth of Gram-positive bacteria and some fungi. Calcimycin hemimagnesium also inhibits the activity of ATPase and uncouples oxidative phosphorylation (OXPHOS) of mammalian cells. Calcimycin hemimagnesium induces apoptosis.

HY-114293A

Acetyl coenzyme A trilithium
Acetyl-coenzyme A (Acetyl-CoA) trilithium is a membrane-impermeant central metabolic intermediate, participates in the TCA cycle and oxidative phosphorylation metabolism. Acetyl-coenzyme A trilithium regulates various cellular mechanisms by providing (sole donor) acetyl groups to target amino acid residues for post-translational acetylation reactions of proteins. Acetyl Coenzyme A trilithium is also a key precursor of lipid synthesis.

HY-111525

Monactin
Monactin is a mactrotetralide antibiotic and a non-selective ionophore for monovalent cations, including potassium, sodium, and lithium. Monactin is isolated from Streptomyces and has antiproliferative activity.

HY-150753

RS6212
RS6212 is a specific LDH (lactate dehydrogenase) inhibitor with an IC₅₀ value of 12.03 μM . RS6212 inhibits tumor growth and exhibits potent anticancer activity in multiple cancer cell lines.

HY-N0220R

Dauricine (Standard)
Dauricine (Standard) is the analytical standard of Dauricine. This product is intended for research and analytical applications. Dauricine, a bisbenzylisoquinoline alkaloid in Menispermum dauricum, possesses anti-inflammatory activity. Dauricine inhibits cell proliferation and invasion, and induces apoptosis by suppressing NF-κB activation in a dose-and time-dependent manner in colon cancer.

HY-E70262

Acetoyl-CoA triammonium
Acetoyl-CoA (triammonium) is a triammonium derivative of Acetoyl-CoA (HY-114293), Acetyl-CoA is a membrane-impermeant central metabolic intermediate, participates in the TCA cycle and oxidative phosphorylation metabolism. Acetyl-coenzyme A, regulates various cellular mechanisms by providing (sole donor) acetyl groups to target amino acid residues for post-translational acetylation reactions of proteins. Acetyl Coenzyme A is also a key precursor of lipid synthesis.

HY-W762011R

BDE 47 (Standard)	Inhibitor
BDE 47 (Standard) is the analytical standard of BDE 47. This product is intended for research and analytical applications. BDE 47 targets mitochondria, inhibits mitochondrial oxidative phosphorylation (OXPHOS), decreases mitochondrial membrane potential (MMP) and induces apoptosis in embryonic cell. BDE 47 induces the generation of ROS, and activates the JNK signaling pathway. BDE 47 exhibits embryonic developmental toxicity in zebrafish.

HY-145303

DX2-201
DX2-201 is a potent and selective oxidative phosphorylation (OXPHOS) complex I inhibitor with an IC₅₀ of 312 nM. DX2-201 has anticancer effects.

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