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Protoporphyrinogen IX oxidase (PPO) inhibitors block a shared step of heme and chlorophyll synthesis. The enzyme oxidizes protoporphyrinogen IX to protoporphyrin IX in mitochondria and chloroplasts. When plant PPO is blocked, the accumulating substrate is oxidized outside the enzyme to protoporphyrin IX. This porphyrin acts as a photosensitizer, and light then generates reactive oxygen species that damage cell membranes. PPO was identified in 1989 as the molecular target of diphenyl ether herbicides. Acifluorfen, fomesafen and oxyfluorfen belong to this diphenyl ether class, whereas flumioxazin is an N-phenylphthalimide. In humans, a mutation that lowers PPO activity was reported in 1996 in variegate porphyria.
PPO-IN-10 is a selective inhibitor of protoporphyrinogen IX oxidase (PPO), functioning through its 2-phenylpyridine pyrrolidone scaffold. By inhibiting PPO, this compound induces the accumulation of photosensitive protoporphyrin IX, ultimately leading to necrosis in target weed leaves. PPO-IN-10 serves as a valuable tool in research aimed at the development of novel PPO herbicides.
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Saflufenacil-d7 is a deuterium-labeled variant of Saflufenacil, a herbicide belonging to the pyrimidinedione class. This compound acts as a potent inhibitor of protoporphyrinogen IX oxidase (PPO), providing effective preplant burndown and selective preemergence control of dicot weeds in various crops, including corn. Saflufenacil-d7 is primarily utilized in chemical research for tracking and understanding the behavior of Saflufenacil in biological systems and environmental studies.
PPO-IN-2 is a potent inhibitor of protoporphyrinogen IX oxidase, exhibiting a Ki value of 16 nM. This compound effectively disrupts heme biosynthesis by targeting the conversion of protoporphyrinogen IX to protoporphyrin IX. PPO-IN-2 is valuable for research into porphyrias and other disorders related to heme metabolism, providing insights into potential therapeutic strategies.
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PPO-IN-3 is a potent protoporphyrinogen oxidase (PPO) inhibitor, exhibiting a KI value of 0.67 nM. This compound demonstrates effective post-emergence herbicidal activity, making it valuable for agricultural applications aimed at weed control. Its specific mechanism of action provides a useful tool for research into herbicide efficacy and resistance mechanisms.
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Saflufenacil is a potent herbicide belonging to the pyrimidinedione chemical class that acts as a selective preemergence and preplant burndown agent for dicot weed control in various crops, including corn. Its primary mechanism involves the inhibition of protoporphyrinogen IX oxidase (PPO), leading to the disruption of chlorophyll synthesis and subsequent plant death. This compound is useful for researchers studying herbicide efficacy and weed management strategies in agricultural settings.
Herbicidal agent 2 is a protoporphyrinogen oxidase (PPO) inhibitor that demonstrates effective herbicidal activity against a range of broadleaf and monocotyledon weeds. This compound serves as a valuable tool in agricultural research for studying herbicide resistance and developing new weed management strategies. Its targeted mechanism offers insights into the inhibition of crucial enzymatic pathways involved in plant growth and development.
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PPO-IN-7 is a potent inhibitor of protoporphyrinogen oxidase (PPO), a key enzyme involved in heme biosynthesis. This compound demonstrates significant herbicidal activity, making it valuable for research applications in plant biology and agricultural chemistry. Its ability to inhibit PPO provides insights into metabolic pathways and offers potential development avenues for herbicide formulations.
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PPO-IN-6 is a potent protoporphyrinogen oxidase (PPO) inhibitor that disrupts heme and chlorophyll biosynthesis. By inhibiting PPO activity, PPO-IN-6 can be utilized in cancer research and the investigation of other diseases linked to altered porphyrin metabolism. This compound serves as a valuable tool for studying the biochemical pathways involved in disease progression and therapeutic interventions.
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PPO-IN-15 is a potent inhibitor of protoporphyrinogen IX oxidase (PPO), targeting a key enzyme in the biosynthesis of chlorophyll. This compound demonstrates effective herbicidal activity against resistant weed species, making it a valuable tool in agricultural research. Its selectivity profiles indicate reduced phytotoxicity, particularly in wheat and rice, enhancing crop safety while managing weed populations. This functionality makes PPO-IN-15 suitable for studies aimed at developing sustainable weed management strategies.
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2,3-Diaminopropionic acid hydrochloride acts as an inhibitor of polyphenol oxidase (PPO), an enzyme involved in the browning reaction of fruits and vegetables. This compound serves as a key precursor for the synthesis of antibiotics and the siderophore staphyloferrin B. Its ability to modulate PPO activity makes it valuable for research in enzymology and agriculture, particularly in studies aimed at controlling oxidative processes in various biological systems.
PPO-IN-1 is a potent inhibitor of protoporphyrinogen IX oxidase (PPO), exhibiting a Ki value of 2.5 nM. This compound serves as a valuable click chemistry reagent, featuring an alkyne group that enables it to participate in copper-catalyzed azide-alkyne cycloaddition (CuAAc) reactions. Its primary biological activity makes it useful for studying pathways involving heme biosynthesis and investigating potential therapeutic applications in diseases related to PPO dysregulation.
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Oxyfluorfen-d5 is a deuterated analog of Oxyfluorfen, functioning primarily as a protoporphyrinogen oxidase inhibitor. This compound disrupts photosynthesis by inhibiting chlorophyll synthesis, making it effective for controlling both annual broad-leaved and grass weeds in agricultural applications. Oxyfluorfen-d5 is particularly valuable for research in herbicide resistance and the study of herbicide mechanisms at a molecular level.
