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Agrisera
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Store lyophilized/reconstituted at -20°C; once reconstituted make aliquots to avoid repeated freeze-thaw cycles. Please remember to spin the tubes briefly prior to opening them to avoid any losses that might occur from material adhering to the cap or sides of the tube.
For reconstitution add 50 µL of sterile water.
Specific Species Reactivity: Arabidopsis thaliana, Solanum lycopersicum
Chalcone synthase is a plant-encoded, predominantly cytosolic enzyme that can associate with the cytoplasmic face of the endoplasmic reticulum as part of phenylpropanoid/flavonoid metabolon assemblies, positioning it near upstream phenylpropanoid enzymes while acting on CoA-linked substrates. Structurally, it is a soluble type III polyketide synthase (thiolase-fold) that functions as a homodimer, with each monomer contributing an active-site cavity that binds a starter acyl-CoA and iteratively extends it with malonyl-CoA-derived two-carbon units before cyclization. Catalysis relies on a conserved active-site nucleophile Cys164 and key residues that support decarboxylation/condensation chemistry and intermediate control (including His303 and Asn336, with additional "gatekeeper" residues shaping chain-length and cyclization outcomes), enabling formation of a tetraketide intermediate from one p-coumaroyl-CoA plus three malonyl-CoA equivalents that cyclizes to a chalcone product. Biologically, chalcone synthase catalyzes the first committed step into flavonoid and isoflavonoid biosynthesis, thereby underpinning production of pigments (e.g., anthocyanins), signaling and UV-protective metabolites, and antimicrobial/defense-associated compounds; its expression is commonly induced by developmental cues and stresses such as UV exposure and pathogen challenge, linking enzyme activity to adaptive secondary metabolism and plant resistance.
仅用于科研。不用于诊断过程。未经明确授权不得转售。
蛋白别名: CHS; naringenin-chalcone synthase