Nicotinamide Coenzyme Synthesis: A Case of Ribonucleotide Emergence or a Byproduct of the RNA World?
Nicotinamide Coenzyme Synthesis: A Case of Ribonucleotide Emergence or a Byproduct of the RNA World?
复制标题
烟酰胺辅酶合成:核糖核苷酸的出现还是 RNA 世界的副产品?
DOI:
10.1007/978-3-642-21625-1_9
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发表时间:
2011
影响因子:
2.6
通讯作者:
N. Raffaelli
中科院分区:
文献类型:
--
作者:
N. Raffaelli
Coenzymes likely represent the oldest metabolic fossils within a cell, as suggested by their presence and essentiality in all kingdoms of life and the autocatalytic nature of their biosynthetic pathways. The presence of a ribonucleotidyl group in the structure of most coenzymes that use it as a “handle” for binding to the protein catalyst means that ribonucleotides must have been present at the time coenzymes emerged. An open question remains whether the ribonucleotidyl group has been co-opted from a preexisting RNA in a primordial “RNA world” before the emergence of proteins, or it represents the evolutionary predecessor of contemporary nucleic acids. The nicotinamide coenzyme NAD (P) is one of the oldest molecules, not only in the history of biochemistry, but also in the evolutionary steps towards the emergence of life. Together with relatively simple organics, such as PRPP (5′-phosphoribosyl 1′-pyrophosphate), PLP (pyridoxal 5′-phosphate) and many others, it may have been a crucial prebiotic agent in organizing a collectively autocatalytic protometabolic ecosystem. Here, the NAD(P) biosynthetic pathway will be described with views on its origin. NAD(P)’s peculiar biochemical features will also be discussed with the aim to offer novel arguments to the debate on the sequence of chemical evolution in the origin of life.
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影响因子:
2.9
作者:
Huang, FQ;Bugg, CW;Yarus, M
通讯作者:
Yarus, M
影响因子:
7.2
作者:
Yarus,Michael
通讯作者:
Yarus,Michael
影响因子:
--
作者:
Nahvi, A;Sudarsan, N;Breaker, RR
通讯作者:
Breaker, RR
DOI:
10.1016/j.str.2009.05.012
发表时间:
2009-07-15
期刊:
Structure (London, England : 1993)
影响因子:
--
作者:
Huang N;De Ingeniis J;Galeazzi L;Mancini C;Korostelev YD;Rakhmaninova AB;Gelfand MS;Rodionov DA;Raffaelli N;Zhang H
通讯作者:
Zhang H
影响因子:
--
作者:
Huang, FQ;Yang, ZL;Yarus, M
通讯作者:
Yarus, M