scholarly journals Nucleotide sequences of two tRNA gene clusters fromMicrococcus luteus

1990 ◽  
Vol 18 (23) ◽  
pp. 7155-7155 ◽  
Author(s):  
Ryoji Ikeda ◽  
Takeshi Ohama ◽  
Akira Muto ◽  
Syozo Osawa
Keyword(s):  
Trna Gene ◽  
Gene Clusters ◽  
Nucleotide Sequences

Characterization of a Rat tRNA Gene Cluster: Comparison of Nucleotide Sequences of the Gene for tRNALeu Newly Found in Repeating Units1

1985 ◽  
Vol 97 (6) ◽  
pp. 1719-1725 ◽  
Author(s):  
Kyoko SHIBUYA ◽  
Shigeru NOGUCHI ◽  
Mineo YAMAKI ◽  
Susumu NISHIMURA ◽  
Takao SEKIYA
Keyword(s):  
Gene Cluster ◽  
Trna Gene ◽  
Nucleotide Sequences

Structure and in vitro transcription of tRNA gene clusters containing the primers of MuLV reverse transcriptase

1986 ◽  
Vol 158 (3) ◽  
pp. 437-442 ◽  
Author(s):  
Tommaso RUSSO ◽  
Francesco COSTANZO ◽  
Adriana OLIVA ◽  
Rosario AMMENDOLA ◽  
Angela DUILIO ◽  
...  
Keyword(s):  
Reverse Transcriptase ◽  
Trna Gene ◽  
Gene Clusters ◽  
In Vitro Transcription

scholarly journals Global In-Silico Scenario of tRNA Genes and Their Organization in Virus Genomes

Viruses ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 180 ◽  
Author(s):  
Sergio Morgado ◽  
Ana Vicente
Keyword(s):  
In Silico ◽  
Large Scale ◽  
Trna Gene ◽  
Gene Clusters ◽  
Trna Genes ◽  
Genome Survey ◽  
In Silico Study ◽  
Domains Of Life ◽  
Dsdna Viruses ◽  
Virus Genomes

Viruses are known to be highly dependent on the host translation machinery for their protein synthesis. However, tRNA genes are occasionally identified in such organisms, and in addition, few of them harbor tRNA gene clusters comprising dozens of genes. Recently, tRNA gene clusters have been shown to occur among the three domains of life. In such a scenario, the viruses could play a role in the dispersion of such structures among these organisms. Thus, in order to reveal the prevalence of tRNA genes as well as tRNA gene clusters in viruses, we performed an unbiased large-scale genome survey. Interestingly, tRNA genes were predicted in ssDNA (single-stranded DNA) and ssRNA (single-stranded RNA) viruses as well in many other dsDNA viruses of families from Caudovirales order. In the latter group, tRNA gene clusters composed of 15 to 37 tRNA genes were characterized, mainly in bacteriophages, enlarging the occurrence of such structures within viruses. These bacteriophages were from hosts that encompass five phyla and 34 genera. This in-silico study presents the current global scenario of tRNA genes and their organization in virus genomes, contributing and opening questions to be explored in further studies concerning the role of the translation apparatus in these organisms.

scholarly journals Transcription Initiation and Termination on Leishmania major Chromosome 3

2004 ◽  
Vol 3 (2) ◽  
pp. 506-517 ◽  
Author(s):  
Santiago Martínez-Calvillo ◽  
Dan Nguyen ◽  
Kenneth Stuart ◽  
Peter J. Myler
Keyword(s):  
Rna Polymerase Ii ◽  
Gene Cluster ◽  
Transcription Initiation ◽  
Leishmania Major ◽  
Trna Gene ◽  
Gene Clusters ◽  
Chromosome 1 ◽  
Gene Region ◽  
Transcription Terminator ◽  
The Right

ABSTRACT Genome projects involving Leishmania and other trypanosomatids have revealed that most genes in these organisms are organized into large clusters of genes on the same DNA strand. We have previously shown that transcription of the entire Leishmania major Friedlin (LmjF) chromosome 1 (chr1) initiates bidirectionally between two divergent gene clusters. Here, we analyze transcription of LmjF chr3, which contains two convergent clusters of 67 and 30 genes, separated by a tRNA gene, with a single divergent protein-coding gene located close to the “left” telomere. Nuclear run-on analyses indicate that specific transcription of chr3 initiates bidirectionally between the single subtelomeric gene and the adjacent 67-gene cluster, close to the “right” telomere upstream of the 30-gene cluster, and upstream of the tRNA gene. Transcription on both strands terminates within the tRNA-gene region. Transient-transfection studies support the role of the tRNA-gene region as a transcription terminator for RNA polymerase II (Pol II) and Pol III, and also for Pol I.

scholarly journals Identification of shochu yeast strains by nucleotide sequences of spacer regions of the ribosomal gene clusters

2007 ◽  
Vol 102 (9) ◽  
pp. 679-684 ◽  
Author(s):  
Yue-Qin TANG ◽  
Hiroshi MIYAGAWA ◽  
Ayako OZAKI ◽  
Shigeru MORIMURA ◽  
Kenji KIDA
Keyword(s):  
Gene Clusters ◽  
Ribosomal Gene ◽  
Nucleotide Sequences ◽  
Yeast Strains

Molecular phylogeny of the family of apes and humans

Genome ◽  
1989 ◽  
Vol 31 (1) ◽  
pp. 316-335 ◽  
Author(s):  
Morris Goodman ◽  
Ben F. Koop ◽  
John Czelusniak ◽  
David H. A. Fitch ◽  
Danilo A. Tagle ◽  
...  
Keyword(s):  
Globin Gene ◽  
Gene Clusters ◽  
Nucleotide Sequences ◽  
Primate Phylogeny ◽  
Dna Evidence ◽  
Overwhelming Evidence ◽  
The Family ◽  
Rate Of Molecular Evolution ◽  
Morphological Picture ◽  
Molecular Picture

The morphological picture of primate phylogeny has not unambiguously identified the nearest outgroup of Anthropoidea and has not resolved the branching pattern within Hominoidea. The molecular picture provides more resolution and clarifies the systematics of Hominoidea. Protein and DNA evidence divides Hominoidea into Hylobatidae (gibbons) and Hominidae, family Hominidae into Ponginae (orangutan) and Homininae, and subfamily Homininae into two tribes, one for Gorilla, and the other for Pan (chimpanzee) and Homo. Parsimony and maximum likelihood analyses, carried out on orthologous noncoding nucleotide sequences from primate β-globin gene clusters, provide significant evidence for the human-chimpanzee tribe and overwhelming evidence for the human-chimpanzee-gorilla clade. These analyses also indicate that the rate of molecular evolution became slower in hominoids than in other primates and mammals.Key words: primate phylogeny, gene clusters, nucleotide sequences.

scholarly journals Exploring tRNA gene cluster in archaea

2018 ◽  
Keyword(s):  
Gene Transfer ◽  
Horizontal Gene Transfer ◽  
Gene Cluster ◽  
Trna Gene ◽  
Gene Clusters ◽  
Gene Organization ◽  
Trna Genes ◽  
Genomic Analyses ◽  
Living Organisms

AbstractShared traits between prokaryotes and eukaryotes are helpful in the understanding of the tree of life evolution. In bacteria and eukaryotes, it has been shown a particular organization of tRNA genes as clusters, but this trait has not been explored in archaea domain. Here, based on analyses of complete and draft archaeal genomes, we demonstrated the prevalence of tRNA gene clusters in archaea. tRNA gene cluster was identified at least in three Archaea class, Halobacteria, Methanobacteria and Methanomicrobia from Euryarchaeota supergroup. Genomic analyses also revealed evidence of tRNA gene cluster associated with mobile genetic elements and horizontal gene transfer inter/intra-domain. The presence of tRNA gene clusters in the three domain of life suggests a role of this type of tRNA gene organization in the biology of the living organisms.

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