当前位置: X-MOL 学术Chem. Rev. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Eight Kinetically Stable but Thermodynamically Activated Molecules that Power Cell Metabolism
Chemical Reviews ( IF 51.4 ) Pub Date : 2017-12-22 00:00:00 , DOI: 10.1021/acs.chemrev.7b00510
Christopher T Walsh 1 , Benjamin P Tu 2 , Yi Tang 3
Affiliation  

Contemporary analyses of cell metabolism have called out three metabolites: ATP, NADH, and acetyl-CoA, as sentinel molecules whose accumulation represent much of the purpose of the catabolic arms of metabolism and then drive many anabolic pathways. Such analyses largely leave out how and why ATP, NADH, and acetyl-CoA (Figure 1) at the molecular level play such central roles. Yet, without those insights into why cells accumulate them and how the enabling properties of these key metabolites power much of cell metabolism, the underlying molecular logic remains mysterious. Four other metabolites, S-adenosylmethionine, carbamoyl phosphate, UDP-glucose, and Δ2-isopentenyl-PP play similar roles in using group transfer chemistry to drive otherwise unfavorable biosynthetic equilibria. This review provides the underlying chemical logic to remind how these seven key molecules function as mobile packets of cellular currencies for phosphoryl transfers (ATP), acyl transfers (acetyl-CoA, carbamoyl-P), methyl transfers (SAM), prenyl transfers (IPP), glucosyl transfers (UDP-glucose), and electron and ADP-ribosyl transfers (NAD(P)H/NAD(P)+) to drive metabolic transformations in and across most primary pathways. The eighth key metabolite is molecular oxygen (O2), thermodynamically activated for reduction by one electron path, leaving it kinetically stable to the vast majority of organic cellular metabolites.

中文翻译:

八种动力学稳定但热力学激活的分子,为细胞代谢提供动力

现代细胞代谢分析指出了三种代谢物:ATP、NADH 和乙酰辅酶A,它们作为哨兵分子,其积累代表了代谢分解代谢臂的大部分目的,然后驱动许多合成代谢途径。此类分析很大程度上忽略了 ATP、NADH 和乙酰辅酶 A(图 1)在分子水平上如何以及为何发挥如此重要的作用。然而,如果没有深入了解细胞为何积累它们以及这些关键代谢物的促进特性如何为大部分细胞代谢提供动力,潜在的分子逻辑仍然是神秘的。其他四种代谢物,S-腺苷甲硫氨酸、氨基甲酰磷酸、UDP-葡萄糖和 Δ 2 -异戊烯基-PP 在使用基团转移化学来驱动其他不利的生物合成平衡中发挥类似的作用。本综述提供了基本的化学逻辑,以提醒这七个关键分子如何作为细胞货币的移动包发挥作用,用于磷酰基转移(ATP)、酰基转移(乙酰辅酶A、氨基甲酰基-P)、甲基转移(SAM)、异戊二烯基转移(IPP) )、葡萄糖基转移 (UDP-葡萄糖) 以及电子和 ADP-核糖基转移 (NAD(P)H/NAD(P) + ),以驱动大多数主要途径内和之间的代谢转化。第八种关键代谢物是分子氧 (O 2 ),通过一条电子路径热力学激活还原,使其对绝大多数有机细胞代谢物具有动力学稳定性。
更新日期:2017-12-22
down
wechat
bug