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植物叶绿体中果糖1,6-二磷酸醛缩酶是光合作用中参与calvin循环的重要酶。催化果糖1,6-二磷酸和景天庚酮糖1,7-二磷酸的合成反应,在各种逆境胁迫下表现不同的响应。 测定原理:果糖1,6-二磷酸醛缩酶催化果糖1,6-二磷酸生成3-磷酸甘油醛和磷酸二羟丙酮,在磷酸丙糖异构酶和α-磷酸甘油脱氢酶作用下催化NADH和磷酸二羟丙酮生成NAD⁺和α-磷酸甘油,340nm处吸光值的变化可反映果糖1,6-二磷酸醛缩酶活性的高低。
Fructose-1,6-bisphosphate aldolase in plant chloroplasts is an important enzyme involved in the Calvin cycle during photosynthesis. It catalyzes the synthesis of fructose-1,6-bisphosphate and sedoheptulose-1,7-bisphosphate, and exhibits different responses under various stress conditions. Determination Principle: Fructose-1,6-bisphosphate aldolase catalyzes the cleavage of fructose-1,6-bisphosphate into glyceraldehyde-3-phosphate and dihydroxyacetone phosphate. In the presence of triose phosphate isomerase and α-glycerophosphate dehydrogenase, dihydroxyacetone phosphate reacts with NADH to form NAD⁺ and α-glycerophosphate. The change in absorbance at 340 nm reflects the activity of fructose-1,6-bisphosphate aldolase.