Journal of Molecular Evolution
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Repeats of base oligomers as the primordial coding sequences of the primeval earth and their vestiges in modern genes
Journal of Molecular Evolution - Tập 20 - Trang 313-321 - 1984
Three outstanding properties uniquely qualify repeats of base oligomers as the primordial coding sequences of all polypeptide chains. First, when compared with randomly generated base sequences in general, they are more likely to have long open reading frames. Second, periodical polypeptide chains specified by such repeats are more likely to assume either α-helical or β-sheet secondary structures ...... hiện toàn bộ
A Novel Tripartite Structure Comprising a Mariner-Like Element and Two Additional Retrotransposons Found in the Bombyx mori Genome
Journal of Molecular Evolution - - 1999
Examination of protein sequence homologies: III. Ribosomal protein YS25 fromSaccharomyces cerevisiae and its counterparts fromSchizosaccharomyces pombe, rat liver, andEscherichia coli
Journal of Molecular Evolution - - 1986
Computational Prediction of Genomic Functional Cores Specific to Different Microbes
Journal of Molecular Evolution - Tập 63 Số 6 - Trang 733-746 - 2006
Computational and experimental attempts tried to characterize a universial core of genes representing the minimal set of functional needs for an organism. Based on the increasing number of available complete genomes, comparative genomics has concluded that the universal core contains < 50 genes. In contrast, experiments suggest a much larger set of essential genes (certainly more than several h...... hiện toàn bộ
Evidence for Multiple Origins of Human Infectivity in Trypanosoma brucei Revealed by Minisatellite Variant Repeat Mapping
Journal of Molecular Evolution - Tập 52 - Trang 290-301 - 2001
In recent years a wide variety of biochemical and molecular typing systems has been employed in the study of parasite diversity aimed at investigating the level of genetic diversity and delineating the relationship between differcnt species and subspecies. However, such methods have failed to differentiate between two of the classically defined subspecies of the protozoan parasite Trypanosoma bru...... hiện toàn bộ
In Vitro Selection of a Deoxyribozyme That Can Utilize Multiple Substrates
Journal of Molecular Evolution - Tập 54 - Trang 180-190 - 2014
Deoxyribozymes that could catalyze the formation of an internucleotide phosphorothioester linkage were selected from a random sequence pool. During the course of the selection, the pool was successively challenged with five oligonucleotide substrates, each of which terminated in the same hexanucleotide sequence. Selected deoxyribozyme ligases could use all five substrates, albeit to different degr...... hiện toàn bộ
Sự tiến hóa của các cấu trúc thứ cấp RNA ribosome ITS ở các sinh vật cộng sinh nấm và tảo của một số loài thuộc giống Cladonia sect. Cladonia (Cladoniaceae, Ascomycotina) Dịch bởi AI
Journal of Molecular Evolution - Tập 64 - Trang 528-542 - 2007
Các nghiên cứu tiến hóa trong các hiệp hội địa y theo chân sinh vật cộng sinh nấm (mycobiont), là sinh vật cộng sinh mà địa y được đặt tên và chiếm phần lớn thallus. Tuy nhiên, sự tiến hóa của đối tác tảo (photobiont) cũng rất quan trọng để duy trì tính tương thích giữa các sinh vật cộng sinh và tối ưu hóa năng suất của hiệp hội địa y. Các vùng spacer nội bộ (ITS) của DNA ribosome hạt nhân (rDNA) ...... hiện toàn bộ
#địa y #tảo #nấm #mycobiont #photobiont #ITS #rDNA #cấu trúc thứ cấp
ThepheA/tyrA/aroF region fromErwinia herbicola: An emerging comparative basis for analysis of gene organization and regulation in enteric bacteria
Journal of Molecular Evolution - Tập 36 - Trang 107-120 - 1993
Extensive knowledge exists inEscherichia coli about the contiguouspheA andaroF-tyrA operons which have opposite transcription orientations and are separated by a bidirectional transcription terminator. The corresponding structural genes and individual components of the terminator and attenuator fromErwinia herbicola have been analyzed from an evolutionary vantage point. A 7.5-kb DNA fragment fromE...... hiện toàn bộ
The role of sulphur in chemical evolution
Journal of Molecular Evolution - Tập 9 - Trang 329-338 - 1977
Sulphur may have played an important role, mainly as an energy converter, during the initial steps of Chemical Evolution. In atmospheric processes, sulphur, in the form of H2S might have been a primary energy acceptor and a source of hot hydrogen atoms. The presence of H2S in the primeval earth atmosphere with a molar ratio of about 10−2 could have allowed the formation of several volatile S-conta...... hiện toàn bộ
Tổng số: 3,459
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