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Origins of gene, genetic code, protein and life: comprehensive view of life systems from a GNC-SNS primitive genetic code hypothesis

机译:基因,遗传密码,蛋白质和生命的起源:从GNC-SNS原始遗传密码假设中全面了解生命系统

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We have investigated the origin of genes, the genetic code, proteins and life using six indices (hydropathy, e???-helix, e???-sheet and e???-turn formabilities, acidic amino acid content and basic amino acid content) necessary for appropriate three-dimensional structure formation of globular proteins. From the analysis of microbial genes, we have concluded that newly-born genes are products of nonstop frames (NSF) on antisense strands of microbial GC-rich genes [GC-NSF(a)] and from SNS repeating sequences [(SNS)n] similar to the GC-NSF(a) (S and N mean G or C and either of four bases, respectively). We have also proposed that the universal genetic code used by most organisms on the earth presently could be derived from a GNC-SNS primitive genetic code. We have further presented the [GADV]-protein world hypothesis of the origin of life as well as a hypothesis of protein production, suggesting that proteins were originally produced by random peptide formation of amino acids restricted in specific amino acid compositions termed as GNC-, SNS- and GC-NSF(a)-0th order structures of proteins. The [GADV]-protein world hypothesis is primarily derived from the GNC-primitive genetic code hypothesis. It is also expected that basic properties of extant genes and proteins could be revealed by considerations based on the scenario with four stages.
机译:我们使用六个指标(亲水性,e-螺旋,e-折叠和e-折叠可塑性,酸性氨基酸含量和碱性氨基酸)研究了基因的起源,遗传密码,蛋白质和生命。酸含量)是球形蛋白质适当三维结构形成所必需的。通过对微生物基因的分析,我们得出结论,新生基因是微生物富含GC的基因[GC-NSF(a)]和SNS重复序列[(SNS)n ]类似于GC-NSF(a)(S和N分别表示G或C以及四个碱基之一)。我们还提出,目前地球上大多数生物使用的通用遗传密码可以源自GNC-SNS原始遗传密码。我们进一步提出了生命起源的[GADV]蛋白质世界假说以及蛋白质生产假说,这表明蛋白质最初是由限制在称为GNC-的特定氨基酸组成中的氨基酸的随机肽形成而产生的, SNS-和GC-NSF(a)-0阶蛋白质结构。 [GADV]-蛋白质世界假说主要源自GNC原始遗传密码假说。还期望通过基于四个阶段的方案的考虑可以揭示现存基因和蛋白质的基本特性。

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