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Photosystem II

" in MedChemExpress (MCE) Product Catalog:

By Targets:	Photosystem II (2) Androgen Receptor (3) Antibiotic (1) Bacterial (4) Biochemical Assay Reagents (1) DNA/RNA Synthesis (2) Endogenous Metabolite (7) Fungal (1) Influenza Virus (2) Integrin (1) Isotope-Labeled Compounds (4) Parasite (2) SOD (1)
By Research Areas:	Cancer (1) Endocrinology (3) Infection (5) Inflammation/Immunology (1) Metabolic Disease (6)

Inhibitors & Agonists

Biochemical Assay Reagents

Natural
Products

Isotope-Labeled Compounds

Targets Recommended: Photosystem II CD74

Cat. No.	Product Name	Target	Research Areas	Chemical Structure

HY-B1848

Hexaflumuron	Others	Others
Hexazinone is a nonselective herbicide from the triazine family. Hexazinone binds to the D-1 quinone protein of the electron transport chain in photosystem II to inhibit the photosynthesis .

HY-B1849

Hexazinone	Others	Infection
Hexazinone is a nonselective herbicide from the triazine family. Hexazinone binds to the D-1 quinone protein of the electron transport chain in photosystem II to inhibit the photosynthesis .

HY-B1866

Linuron	Androgen Receptor	Endocrinology
Linuron is a phenylurea herbicide that is widely used to control the growth of grass and weeds in various agriculture crops and in orchards. Linuron is a photosystem II inhibitor. Linuron is also a competitive androgen receptor (AR) antagonist with a K_i of 100 μM. Linuron shows reproductive toxicity in animals that acts as an endocrine disruptor .

HY-17513

Amicarbazone BAY314666; BAY-MKH 3586	Others	Others
Amicarbazone(BAY-MKH3586; BAY314666) is a potent inhibitor of photosynthetic electron transport via binding to the Qb domain of photosystem II (PSII); herbicide with a broad spectrum of weed control.

HY-W015816

2,6-Dimethylbenzoquinone 2,6-DMBQ	Others	Others
2,6-Dimethylbenzoquinone (2,6-DMBQ) is a quinone compound that can accept photosynthetic electrons downstream of photosystem II .

HY-148429

Antimalarial agent 17	Parasite	Others
Antimalarial agent 17 is an antimalarial agent, also acts as a herbicide. Antimalarial agent 17 is photosystem II inhibitor, shows post-emergence herbicidal activity equal to commercial herbicides .

HY-121242

Buthidazole VEL-5026	Photosystem II	Others
Buthidazole is a new and selective herbicide for weed control in corn. Buthidazole inhibits photosynthetic electron transport at two distinct sites in the photosynthetic electron transport chain. The major site of inhibition was on the reducing side of photosystem II. Another site of electron transport inhibition is on the oxidizing side of photosystem II. Buthidazole inhibits corn photosynthesis and prevents starch accumulation in bundle sheath chloroplasts and some ultrastructural disruption of mesophyl chloroplasts of corn plants .

HY-B1866R

Linuron (Standard)	Androgen Receptor	Endocrinology
Linuron (Standard) is the analytical standard of Linuron. This product is intended for research and analytical applications. Linuron is a phenylurea herbicide that is widely used to control the growth of grass and weeds in various agriculture crops and in orchards. Linuron is a photosystem II inhibitor. Linuron is also a competitive androgen receptor (AR) antagonist with a Ki of 100 μM. Linuron shows reproductive toxicity in animals that acts as an endocrine disruptor .

HY-111998

Stigmatellin	Antibiotic Bacterial Photosystem II DNA/RNA Synthesis	Infection
Stigmatellin is a antibiotic against yeasts, filamentous fungi and several Gram-positive bacteria, derived from the cell mass of the myxobacterium. Stigmatellin is also a powerful inhibitor of photosynthetic electron transport. Stigmatellin uses various sugars, polysaccharides and acids of the citrate cycle as substrates and inhibits RNA and protein synthesis. Stigmatellin has two different inhibition sites. One is located at the reducing side of Photosystem II. Another one is located at the cytochrome b₆/f-complex. Stigmatellin is promising for research of antimicrobial and photosynthesis .

HY-N11913

Siderin	Biochemical Assay Reagents	Others
Siderin is a Photosystem II inhibitor that effectively inhibits ATP synthesis and chloroplast electron transport during photosynthesis in isolated spinach. Siderin can be used in the study of plant photosynthesis .

HY-B1776

Spermidine 4 Publications Verification	Endogenous Metabolite	Metabolic Disease
Spermidine maintains cell membrane stability, increases antioxidant enzymes activities, improving photosystem II (PSII), and relevant gene expression. Spermidine significantly decreases the H₂O₂ and O₂ ^.- contents .

HY-B1776A

Spermidine hydrochloride 4 Publications Verification	Endogenous Metabolite	Metabolic Disease
Spermidine hydrochloride maintains cell membrane stability, increases antioxidant enzymes activities, improving photosystem II (PSII), and relevant gene expression. Spermidine hydrochloride significantly decreases the H₂O₂ and O₂ ^.- contents .

HY-Y0978S2

Boc-Glycine-2-13C N-tert-Butoxycarbonyl-2-aminoacetic acid-2-¹³C; NSC 127669-2-¹³C	Isotope-Labeled Compounds Androgen Receptor	Endocrinology
Boc-Glycine-2- ¹³C is a ¹³C-labeled Linuron. Linuron is a phenylurea herbicide that is widely used to control the growth of grass and weeds in various agriculture crops and in orchards. Linuron is a photosystem II inhibitor. Linuron is also a competitive a

HY-B1849S

Hexazinone-d6	Isotope-Labeled Compounds	Infection
Hexazinone-d₆ is the deuterium labeled Hexazinone[1]. Hexazinone is a nonselective herbicide from the triazine family. Hexazinone binds to the D-1 quinone protein of the electron transport chain in photosystem II to inhibit the photosynthesis[2].

HY-116954

Metribuzin	DNA/RNA Synthesis	Others
Metribuzin is a low-cost non-selective herbicide that belongs to the chemical class of triazinones. Metribuzin hinders DNA synthesis in treated plants and acts on photosystem II, ultimately inhibiting photosynthesis. Metribuzin provides good control of important annual grass and broad-leaf weeds .

HY-B1776R

Spermidine (Standard)	Endogenous Metabolite	Metabolic Disease
Spermidine (Standard) is the analytical standard of Spermidine. This product is intended for research and analytical applications. Spermidine maintains cell membrane stability, increases antioxidant enzymes activities, improving photosystem II (PSII), and relevant gene expression. Spermidine significantly decreases the H2O2 and O2.- contents .

HY-B1776AS1

Spermidine-13C4 hydrochloride 1 Publications Verification	Endogenous Metabolite	Metabolic Disease
Spermidine- ¹³C₄ (hydrochloride) is the ¹³C-labeled Spermidine trihydrochloride. Spermidine hydrochloride maintains cell membrane stability, increases antioxidant enzymes activities, improving photosystem II (PSII), and relevant gene expression. Spermidine hydrochloride significantly decreases the H2O2 and O2.- contents[1].

HY-B1776AS

Spermidine-d8 hydrochloride	Isotope-Labeled Compounds Endogenous Metabolite	Metabolic Disease
Spermidine-d₈ (hydrochloride)e is the deuterium labeled Spermidine trihydrochloride. Spermidine hydrochloride maintains cell membrane stability, increases antioxidant enzymes activities, improving photosystem II (PSII), and relevant gene expression. Spermidine hydrochloride significantly decreases the H2O2 and O2.- contents[1].

HY-B1776S

Spermidine-d6	Endogenous Metabolite	Metabolic Disease
Spermidine-d₆ is the deuterium labeled Spermidine[1]. Spermidine maintains cell membrane stability, increases antioxidant enzymes activities, improving photosystem II (PSII), and relevant gene expression. Spermidine significantly decreases the H2O2 and O2.- contents[2].

HY-NP026

Spirulina C-phycocyanin C-phycocyaninfromporphyratenera	SOD Integrin	Inflammation/Immunology
Spirulina C-phycocyanin, a component of the light-harvesting phycobilisome complex in photosystem II, is a highly dominant chromoprotein in Spirulina. Spirulina C-phycocyanin can be detected by Raman spectral measurement. Spirulina C-phycocyanin has antioxidant, anti-inflammatory, antiplatelet, liver-protective and cholesterol-lowering effects .

HY-N6715

Tenuazonic acid	Influenza Virus Bacterial	Infection
Tenuazonic acid, belonging to tetramic acids that are the largest family of natural products, is a putative nonhost-selective mycotoxin isolated from Alternaria alternate . Tenuazonic acid blocks electron transport beyond primary quinone acceptor (QA) by interacting with D1 protein and it is a broad-spectrum and effective photosystem II (PSII) inhibitor .

HY-N1944S

Nerolidol-d4	Fungal Endogenous Metabolite Bacterial Parasite Isotope-Labeled Compounds	Cancer
Nerolidol-d₄ is deuterated labeled Tenuazonic acid (HY-N6715). Tenuazonic acid, belonging to tetramic acids that are the largest family of natural products, is a putative nonhost-selective mycotoxin isolated from Alternaria alternate . Tenuazonic acid blocks electron transport beyond primary quinone acceptor (QA) by interacting with D₁ protein and it is a broad-spectrum and effective photosystem II (PSII) inhibitor .

HY-N6715R

Tenuazonic acid (Standard)	Influenza Virus Bacterial	Infection
Tenuazonic acid (Standard) is the analytical standard of Tenuazonic acid. This product is intended for research and analytical applications. Tenuazonic acid, belonging to tetramic acids that are the largest family of natural products, is a putative nonhost-selective mycotoxin isolated from Alternaria alternate . Tenuazonic acid blocks electron transport beyond primary quinone acceptor (QA) by interacting with D1 protein and it is a broad-spectrum and effective photosystem II (PSII) inhibitor .

Cat. No.	Product Name	Type

HY-NP026

Spirulina C-phycocyanin C-phycocyaninfromporphyratenera	Native Proteins
Spirulina C-phycocyanin, a component of the light-harvesting phycobilisome complex in photosystem II, is a highly dominant chromoprotein in Spirulina. Spirulina C-phycocyanin can be detected by Raman spectral measurement. Spirulina C-phycocyanin has antioxidant, anti-inflammatory, antiplatelet, liver-protective and cholesterol-lowering effects .

Cat. No.	Product Name	Category	Target	Chemical Structure

HY-B1776

Spermidine 4 Publications Verification	Structural Classification Natural Products Human Gut Microbiota Metabolites Microorganisms Classification of Application Fields Anti-aging Source classification Metabolic Disease Endogenous metabolite Disease Research Fields	Endogenous Metabolite
Spermidine maintains cell membrane stability, increases antioxidant enzymes activities, improving photosystem II (PSII), and relevant gene expression. Spermidine significantly decreases the H₂O₂ and O₂ ^.- contents .

HY-B1776A

Spermidine hydrochloride 4 Publications Verification	Structural Classification Natural Products other families Animals Classification of Application Fields Source classification Metabolic Disease Plants Endogenous metabolite Disease Research Fields	Endogenous Metabolite
Spermidine hydrochloride maintains cell membrane stability, increases antioxidant enzymes activities, improving photosystem II (PSII), and relevant gene expression. Spermidine hydrochloride significantly decreases the H₂O₂ and O₂ ^.- contents .

HY-N6715

Tenuazonic acid	Infection Structural Classification Microorganisms Classification of Application Fields Ketones, Aldehydes, Acids Source classification Disease Research Fields Biological Pesticide Research Agricultural Research	Influenza Virus Bacterial
Tenuazonic acid, belonging to tetramic acids that are the largest family of natural products, is a putative nonhost-selective mycotoxin isolated from Alternaria alternate . Tenuazonic acid blocks electron transport beyond primary quinone acceptor (QA) by interacting with D1 protein and it is a broad-spectrum and effective photosystem II (PSII) inhibitor .

HY-111998

Stigmatellin	Structural Classification Microorganisms Antibiotics Source classification Other Antibiotics	Antibiotic Bacterial Photosystem II DNA/RNA Synthesis
Stigmatellin is a antibiotic against yeasts, filamentous fungi and several Gram-positive bacteria, derived from the cell mass of the myxobacterium. Stigmatellin is also a powerful inhibitor of photosynthetic electron transport. Stigmatellin uses various sugars, polysaccharides and acids of the citrate cycle as substrates and inhibits RNA and protein synthesis. Stigmatellin has two different inhibition sites. One is located at the reducing side of Photosystem II. Another one is located at the cytochrome b₆/f-complex. Stigmatellin is promising for research of antimicrobial and photosynthesis .

HY-N11913

Siderin	Structural Classification Source classification Coumarins Toona ciliata Roem. Phenylpropanoids Plants Meliaceae	Biochemical Assay Reagents
Siderin is a Photosystem II inhibitor that effectively inhibits ATP synthesis and chloroplast electron transport during photosynthesis in isolated spinach. Siderin can be used in the study of plant photosynthesis .

HY-B1776R

Spermidine (Standard)	Structural Classification Natural Products Human Gut Microbiota Metabolites Microorganisms Source classification Endogenous metabolite	Endogenous Metabolite
Spermidine (Standard) is the analytical standard of Spermidine. This product is intended for research and analytical applications. Spermidine maintains cell membrane stability, increases antioxidant enzymes activities, improving photosystem II (PSII), and relevant gene expression. Spermidine significantly decreases the H2O2 and O2.- contents .

HY-N6715R

Tenuazonic acid (Standard)	Structural Classification Microorganisms Ketones, Aldehydes, Acids Source classification	Influenza Virus Bacterial
Tenuazonic acid (Standard) is the analytical standard of Tenuazonic acid. This product is intended for research and analytical applications. Tenuazonic acid, belonging to tetramic acids that are the largest family of natural products, is a putative nonhost-selective mycotoxin isolated from Alternaria alternate . Tenuazonic acid blocks electron transport beyond primary quinone acceptor (QA) by interacting with D1 protein and it is a broad-spectrum and effective photosystem II (PSII) inhibitor .

Cat. No.	Product Name	Chemical Structure

HY-B1849S

Hexazinone-d6
Hexazinone-d₆ is the deuterium labeled Hexazinone[1]. Hexazinone is a nonselective herbicide from the triazine family. Hexazinone binds to the D-1 quinone protein of the electron transport chain in photosystem II to inhibit the photosynthesis[2].

HY-B1776AS1

Spermidine-13C4 hydrochloride 1 Publications Verification
Spermidine- ¹³C₄ (hydrochloride) is the ¹³C-labeled Spermidine trihydrochloride. Spermidine hydrochloride maintains cell membrane stability, increases antioxidant enzymes activities, improving photosystem II (PSII), and relevant gene expression. Spermidine hydrochloride significantly decreases the H2O2 and O2.- contents[1].

HY-B1776AS

Spermidine-d8 hydrochloride
Spermidine-d₈ (hydrochloride)e is the deuterium labeled Spermidine trihydrochloride. Spermidine hydrochloride maintains cell membrane stability, increases antioxidant enzymes activities, improving photosystem II (PSII), and relevant gene expression. Spermidine hydrochloride significantly decreases the H2O2 and O2.- contents[1].

HY-B1776S

Spermidine-d6
Spermidine-d₆ is the deuterium labeled Spermidine[1]. Spermidine maintains cell membrane stability, increases antioxidant enzymes activities, improving photosystem II (PSII), and relevant gene expression. Spermidine significantly decreases the H2O2 and O2.- contents[2].

HY-Y0978S2

Boc-Glycine-2-13C
Boc-Glycine-2- ¹³C is a ¹³C-labeled Linuron. Linuron is a phenylurea herbicide that is widely used to control the growth of grass and weeds in various agriculture crops and in orchards. Linuron is a photosystem II inhibitor. Linuron is also a competitive a

HY-N1944S

Nerolidol-d4
Nerolidol-d₄ is deuterated labeled Tenuazonic acid (HY-N6715). Tenuazonic acid, belonging to tetramic acids that are the largest family of natural products, is a putative nonhost-selective mycotoxin isolated from Alternaria alternate . Tenuazonic acid blocks electron transport beyond primary quinone acceptor (QA) by interacting with D₁ protein and it is a broad-spectrum and effective photosystem II (PSII) inhibitor .

Nerolidol-d4

Nerolidol-d₄ is deuterated labeled Tenuazonic acid (HY-N6715). Tenuazonic acid, belonging to tetramic acids that are the largest family of natural products, is a putative nonhost-selective mycotoxin isolated from Alternaria alternate . Tenuazonic acid blocks electron transport beyond primary quinone acceptor (QA) by interacting with D₁ protein and it is a broad-spectrum and effective photosystem II (PSII) inhibitor .

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Photosystem II

Inhibitors & Agonists

Biochemical Assay Reagents

NaturalProducts

Isotope-Labeled Compounds

Natural
Products