3-Hydroxypropionate cycle A fourth pathway has been discovered for CO 2 assimilation in bacteria, the 3-hydroxypropionate cycle. In this cycle, CO 2 is fixed by acetyl-CoA and propionyl-CoA carboxylases eventually forming Malyl-CoA. This is split into acetyl-CoA, to replenish the cycle, and gl ...
还原性乙酰辅酶A途径(Reductive acetyl CoA pathway) Unlike rTCA and RuBP, rACA is a noncyclic pathway. One CO 2 is captured on a special cofactor (tetrahydrofolate: T in the figure) and reduced to a methyl group. The other CO 2 is reduced to a carobonyl group (C=O) by carbon monoxide dehydrogena ...
还原性三羧酸循环(reductive TCA cycle, rTCT) One alternative strategy for fixing CO 2 is to simply reverse the TCA cycle. Instead of breaking down acetyl CoA with the release of 2 CO 2 and the generation of energy, acetyl CoA is synthesized by the incorporation of 2 CO 2 and the input of 8 H ...