Determining the effects of temperature on the evolution of bacterial tRNA pools.
| العنوان: | Determining the effects of temperature on the evolution of bacterial tRNA pools. |
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| المؤلفون: | Jain V; Biotechnology High School, Freehold, New Jersey., Cope AL; Department of Genetics, Rutgers University, Piscataway, New Jersey.; Human Genetics Institute of New Jersey, Rutgers University, Piscataway, New Jersey. |
| المصدر: | BioRxiv : the preprint server for biology [bioRxiv] 2023 Oct 09. Date of Electronic Publication: 2023 Oct 09. |
| نوع المنشور: | Preprint |
| اللغة: | English |
| بيانات الدورية: | Country of Publication: United States NLM ID: 101680187 Publication Model: Electronic Cited Medium: Internet NLM ISO Abbreviation: bioRxiv Subsets: PubMed not MEDLINE |
| مستخلص: | The genetic code consists of 61 codon coding for 20 amino acids. These codons are recognized by transfer RNAs (tRNA) that bind to specific codons during protein synthesis. Most organisms utilize less than all 61 possible anticodons due to base pair wobble: the ability to have a mismatch with a codon at its third nucleotide. Previous studies observed a correlation between the tRNA pool of bacteria and the temperature of their respective environments. However, it is unclear if these patterns represent biological adaptations to maintain the efficiency and accuracy of protein synthesis in different environments. A mechanistic mathematical model of mRNA translation is used to quantify the expected elongation rates and error rate for each codon based on an organism's tRNA pool. A comparative analysis across a range of bacteria that accounts for covariance due to shared ancestry is performed to quantify the impact of environmental temperature on the evolution of the tRNA pool. We find that thermophiles generally have more anticodons represented in their tRNA pool than mesophiles or psychrophiles. Based on our model, this increased diversity is expected to lead to increased missense errors. The implications of this for protein evolution in thermophiles are discussed. |
| التعليقات: | Update in: Genome Biol Evol. 2024 Jun 4;16(6):evae116. doi: 10.1093/gbe/evae116. (PMID: 38805023) |
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| معلومات مُعتمدة: | K12 GM093854 United States GM NIGMS NIH HHS |
| تواريخ الأحداث: | Date Created: 20231024 Latest Revision: 20240611 |
| رمز التحديث: | 20240612 |
| مُعرف محوري في PubMed: | PMC10592612 |
| DOI: | 10.1101/2023.09.26.559538 |
| PMID: | 37873246 |
| قاعدة البيانات: | MEDLINE |
| DOI: | 10.1101/2023.09.26.559538 |
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