ArticleWorld journal of microbiology & biotechnology2012
Cordyceps militaris (Hypocreales: Cordycipitaceae): transcriptional analysis and molecular characterization of cox1 and group I intron with putative LAGLIDADG endonuclease.
Article in World journal of microbiology & biotechnology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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2 citing papers in PubMed, 5 citations in OpenAlex.
- Clinical metagenomic identification of Balamuthia mandrillaris encephalitis and assembly of the draft genome: the continuing case for reference genome sequencing.Genome medicine · 2015Article
- Rhf1 gene is involved in the fruiting body production of Cordyceps militaris fungus.Journal of industrial microbiology & biotechnology · 2015Article
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5 authors at 2 institutions in 1 country.
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Abstract
The full-length cytochrome c oxidase subunit I gene (cox1) containing a group I intron was isolated from an important medical fungus Cordyceps militaris (Cordycipitaceae). The open reading frame (ORF) of 1,593 nucleotides encoded a predicted protein COX1 of 530 amino acids. The group I intron encoded a putative homing endonuclease (HE) with two LAGLIDADG motifs. RT-PCR and Northern analysis showed a mature transcript of spliced cox1. Both 5'exon-intron and intron-3'exon junctions were also found by RT-PCR, suggesting the possible presence of unspliced cox1 RNA in total RNA. Sequence comparison by BLASTn showed that the coding region of cox1 (CRcox1) of C. militaris had significant similarities to those of related species (such as Cordyceps bassiana and C. brongniartii), while the intron had no significant homologous sequences of Cordycipitaceae fungi in NCBI database. The phylogenetic tree based on the CRcox1 confirmed the present taxonomic status of related species, but the cox1 introns were phylogenetically distinct. Compared to C. bassiana and C. brongniartii, the cox1 intron of C. militaris exhibited specific splicing site and different intronic ORF. The analysis of the folding RNA structures of the known cox1 introns from Cordyceps species showed different base pairs and conserved regions (P1-P10) in their structures. The present results provide useful information on the studies of cox1 intron splicing and Cordyceps evolution.
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