Erythroid-specific 5-aminolevulinate synthase (ALAS2) catalyzes the rate-limiting step in heme biosynthesis.

红系特异的5-氨基酮戊酸合成酶（ALAS2）是血红素生物合成的限速酶。

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The C-H bond activation is the rate-limiting step.

C-H键活化为整个反应的决速步骤。

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Cyclo-oxygenase(COX) is the major rate-limiting enzyme for the synthesis of prostaglandins.

环氧化酶（COX）是致炎物质地诺前列酮合成过程中的重要限速酶。

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This is one of the merits in such an all-inorganic system while some conventional systems cannot follow the light power in general because of their internal or external rate-limiting processes in the complex structures.

ENGADGET: Panasonic Photosynthesis System converts carbon dioxide to organic material with plant-like efficiency

The system is self-limiting because at some point, a very aggressive lender will overshoot, and lend at a rate at which they are not profitable.

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