scholarly journals New Volvovirus Isolate From Domesticated House Cricket, Acheta Domesticus (Orthoptera: Gryllidae)

2021 ◽  
Author(s):  
Somjit Homchan ◽  
Yash Munnalal Gupta
Keyword(s):  
Genome Sequence ◽  
Hybrid Approach ◽  
Genetic Material ◽  
Gene Organization ◽  
Acheta Domesticus ◽  
Open Reading Frames ◽  
Viral Dna ◽  
Dna Viruses ◽  
Alternative Approach ◽  
Broad Variety

Abstract BackgroundDNA viruses have a broad variety of genetic material. Most viral DNA experiments focused on those with recognized pathogenic characteristics. Herein, we employed hybrid approach to systematically identify viral DNA from the Acheta domesticus genome and also curated primer library to reconfirm the infection of Acheta domesticus volvovirus (AdVVV) from A. domesticus samples obtained from breeding facility in Thailand. Methods and ResultsThe AdVVV nucleotide sequence was anchored and examined from genome sequence of A. domesticus. Subsequently, we sequenced the overlapping amplified DNA to assemble the whole genome of AdVVV isolate. The genome sequence began with the putative nonanucleotide origin of replication (1-TAGTATTAC), and had four open reading frames. The circular nature of AdVVV was confirmed as typical stemloop assembled by complementary initial and ending nucleotides sequences. The newly discovered volvovirus isolates from Thailand is also highly homologous (97.34 -98.77 %) with previously identified volvovirus sequences and having identical gene organization. This correlation is particularly surprising considering that the identified volvovirus considerably mutated compared to previously discovered volvovirus isolates. ConclusionsThis research appears to be the first to find volvovirus isolates from Thailand with an alternative approach to identify viral isolates. These results widen our knowledge on rapidly evolving volvovirus, and provide insights for better identification and the phylogenetic analysis based on different segments of viral genome. Also, the alternative method used in the present study will aid in the detection of DNA viruses and the assembly of their genomes.

Association of normal oral mucosa with DNA of the main types of oncogenic viruses

2020 ◽  
pp. 60-63
Author(s):  
S.I. Kutukova ◽  
A.B. Chukhlovin ◽  
A.I. Yaremenko ◽  
Yu.V. Ivaskova ◽  
A.Ya. Razumova ◽  
...  
Keyword(s):  
Oral Mucosa ◽  
Epstein Barr Virus ◽  
Oncogenic Viruses ◽  
Viral Dna ◽  
Dna Viruses ◽  
Normal Oral Mucosa ◽  
Barr Virus ◽  
Ebv Dna ◽  
Epstein Barr ◽  
Hpv 18

The aim of the study was to assess the prevalence of DNA viruses (HSV I and II, CMV, EBV, HPV6.11, HPV16 and HPV18) in the native oral mucosa of healthy volunteers (n=50; 30 men (60.0%), 20 women (40.0%); 25—74 years, median age — 55.0 years (95% CI 47.60-56.76)). All samples of the normal oral mucosa were detected by real-time PCR to detect viral DNA. The majority of the examined — 76% (33/50) — revealed the DNA: one type of viral DNA in 17 (38.00%) of the examined, a combination of the two types in 14 (28.00%). In the normal oral mucosa, DNA of Epstein-Barr virus was significantly more often detected: 15 (30.00%) (p = 0.0276) and human papilloma viruses 27 (54.00%) (p <0.0001), especially HPV-18 (24 (48.00%)): mono-association in 9 (18.00%) examined and in 7 (14.00%) in combination with EBV DNA (p = 0.0253).

scholarly journals Draft Genome Sequence of Saccharomonospora sp. Strain LRS4.154, a Moderately Halophilic Actinobacterium with the Biotechnologically Relevant Polyketide Synthase and Nonribosomal Peptide Synthetase Systems

2017 ◽  
Vol 5 (21) ◽  
Author(s):  
Scarlett Alonso-Carmona ◽  
Blanca Vera-Gargallo ◽  
Rafael R. de la Haba ◽  
Antonio Ventosa ◽  
Horacio Sandoval-Trujillo ◽  
...  
Keyword(s):  
Genome Sequence ◽  
Polyketide Synthase ◽  
Draft Genome ◽  
Nonribosomal Peptide Synthetase ◽  
Open Reading Frames ◽  
Draft Genome Sequence ◽  
Nonribosomal Peptide ◽  
Moderately Halophilic ◽  
Peptide Synthetase ◽  
Reading Frames

ABSTRACT The draft genome sequence of Saccharomonospora sp. strain LRS4.154, a moderately halophilic actinobacterium, has been determined. The genome has 4,860,108 bp, a G+C content of 71.0%, and 4,525 open reading frames (ORFs). The clusters of PKS and NRPS genes, responsible for the biosynthesis of a large number of biomolecules, were identified in the genome.

VirusTaxo: Taxonomic classification of virus genome using multi-class hierarchical classification by k-mer enrichment

2021 ◽  
Author(s):  
Rajan Saha Raju ◽  
Abdullah Al Nahid ◽  
Preonath Shuvo ◽  
Rashedul Islam
Keyword(s):  
Genome Sequence ◽  
Rna Viruses ◽  
Hierarchical Classification ◽  
Classification Problem ◽  
Virus Genome ◽  
Taxonomic Classification ◽  
Dna Viruses ◽  
Dna And Rna ◽  
Full Length Genome

AbstractTaxonomic classification of viruses is a multi-class hierarchical classification problem, as taxonomic ranks (e.g., order, family and genus) of viruses are hierarchically structured and have multiple classes in each rank. Classification of biological sequences which are hierarchically structured with multiple classes is challenging. Here we developed a machine learning architecture, VirusTaxo, using a multi-class hierarchical classification by k-mer enrichment. VirusTaxo classifies DNA and RNA viruses to their taxonomic ranks using genome sequence. To assign taxonomic ranks, VirusTaxo extracts k-mers from genome sequence and creates bag-of-k-mers for each class in a rank. VirusTaxo uses a top-down hierarchical classification approach and accurately assigns the order, family and genus of a virus from the genome sequence. The average accuracies of VirusTaxo for DNA viruses are 99% (order), 98% (family) and 95% (genus) and for RNA viruses 97% (order), 96% (family) and 82% (genus). VirusTaxo can be used to detect taxonomy of novel viruses using full length genome or contig sequences.AvailabilityOnline version of VirusTaxo is available at https://omics-lab.com/virustaxo/.

scholarly journals Genome Sequence of Torulaspora microellipsoides CLIB 830T

2018 ◽  
Vol 6 (26) ◽  
Author(s):  
Virginie Galeote ◽  
Frédéric Bigey ◽  
Hugo Devillers ◽  
Raúl A. Ortiz-Merino ◽  
Sylvie Dequin ◽  
...  
Keyword(s):  
Saccharomyces Cerevisiae ◽  
Genome Sequence ◽  
Horizontal Transfer ◽  
Reference Genome ◽  
Genetic Material ◽  
Ascomycetous Yeast ◽  
Content Type ◽  
Transfer Mechanisms

We report here the genome sequence of the ascomycetous yeast Torulaspora microellipsoides CLIB 830T. A reference genome for this species, which has been found as a donor of genetic material in wine strains of Saccharomyces cerevisiae, will undoubtedly give clues to our understanding of horizontal transfer mechanisms between species in the wine environment.

scholarly journals Complete Genome Sequence of Multidrug-Resistant Strain Nocardia wallacei FMUON74, Isolated from a Sputum Culture

2020 ◽  
Vol 9 (47) ◽  
Author(s):  
Masahiro Toyokawa ◽  
Makoto Taniguchi ◽  
Kazuma Uesaka ◽  
Keiko Nishimura
Keyword(s):  
Genome Sequence ◽  
Complete Genome Sequence ◽  
Resistant Strain ◽  
Complete Genome ◽  
Hybrid Approach ◽  
Multidrug Resistant ◽  
Content Type ◽  
Short Read Sequencing ◽  
Long Read ◽  
Multidrug Resistant Strain

ABSTRACT Nocardia wallacei is one of the members of the N. transvalensis complex which possess a highly unique susceptibility pattern. Here, we describe the closed complete genome sequence of the multidrug-resistant strain N. wallacei FMUON74, which was obtained using a hybrid approach combining Nanopore long-read sequencing and Illumina and DNBseq short-read sequencing.

scholarly journals An improved experimental pipeline for preparing circular ssDNA viruses for next-generation sequencing

2020 ◽  
Author(s):  
Catherine D. Aimone ◽  
J. Steen Hoyer ◽  
Anna E. Dye ◽  
David O. Deppong ◽  
Siobain Duffy ◽  
...  
Keyword(s):  
Next Generation Sequencing ◽  
Rolling Circle Amplification ◽  
Next Generation ◽  
Viral Dna ◽  
Single Stranded Dna ◽  
Dna Viruses ◽  
Short Read ◽  
Rolling Circle ◽  
Optimized Protocol ◽  
Generation Sequencing

AbstractWe present an optimized protocol for enhanced amplification and enrichment of viral DNA for Next Generation Sequencing of begomovirus genomes. The rapid ability of these viruses to evolve threatens many crops and underscores the importance of using next generation sequencing efficiently to detect and understand the diversity of these viruses. We combined enhanced rolling circle amplification (RCA) with EquiPhi29 polymerase and size selection to generate a cost-effective, short-read sequencing method. This optimized protocol produced short-read sequencing with at least 50% of the reads mapping to the viral reference genome. We provide other insights into common misconceptions about RCA and lessons we have learned from sequencing single-stranded DNA viruses. Our protocol can be used to examine viral DNA as it moves through the entire pathosystem from host to vector, providing valuable information for viral DNA population studies, and would likely work well with other CRESS DNA viruses.HighlightsProtocol for short-read, high throughput sequencing of single-stranded DNA viruses using random primersComparison of the sequencing of total DNA versus size-selected DNAComparison of phi29 and Equiphi29 DNA polymerases for rolling circle amplification of viral single-stranded DNA genomes

scholarly journals Complete Genome Sequence of Streptococcus pneumoniae Strain Rx1, a Hex Mismatch Repair-Deficient Standard Transformation Recipient

2021 ◽  
Vol 10 (41) ◽  
Author(s):  
Anna Maria Cuppone ◽  
Lorenzo Colombini ◽  
Valeria Fox ◽  
David Pinzauti ◽  
Francesco Santoro ◽  
...  
Keyword(s):  
Streptococcus Pneumoniae ◽  
Mismatch Repair ◽  
Genome Sequence ◽  
Complete Genome Sequence ◽  
Complete Genome ◽  
Gc Content ◽  
Open Reading Frames ◽  
Circular Chromosome ◽  
Content Type ◽  
Sequencing Technologies

The complete genome sequence of Streptococcus pneumoniae strain Rx1, a Hex mismatch repair-deficient standard transformation recipient, was obtained by combining Nanopore and Illumina sequencing technologies. The genome consists of a 2.03-Mb circular chromosome, with 2,054 open reading frames and a GC content of 39.72%.

scholarly journals Complete genome sequence of GII.9 norovirus

2021 ◽  
Author(s):  
Zilong Zhang ◽  
Danlei Liu ◽  
Zilei Zhang ◽  
Peng Tian ◽  
Shenwei Li ◽  
...  
Keyword(s):  
Genome Sequence ◽  
Complete Genome Sequence ◽  
Complete Genome ◽  
High Throughput Sequencing ◽  
Open Reading Frames ◽  
Viral Sequence ◽  
Sequence Comparisons ◽  
Rapid Amplification ◽  
Genome Level ◽  
Reading Frames

AbstractNorovirus is recognized as one of the leading causes of acute gastroenteritis outbreaks. Genotype GII.9 was first detected in Norfolk, VA, USA, in 1997. However, the complete genome sequence of this genotype has not yet been determined. In this study, a complete genome sequence of GII.9[P7] norovirus, SCD1878_GII.9[P7], from a patient was determined using high-throughput sequencing and rapid amplification of cDNA ends (RACE) technology. The complete genome sequence of SCD1878_GII.9[P7] is 7544 nucleotides (nt) in length with a 3’ poly(A) tail and contains three open reading frames. Sequence comparisons indicated that SCD1878_GII.9[P7] shares 92.1%-92.3% nucleotide sequence identity with GII.P7 (AB258331 and AB039777) and 96.7%-97.4% identity with GII.9 (AY038599 and DQ379715). The results suggested that SCD1878_GII.9[P7] is a member of P genotype GII.P7 and G genotype GII.9. This viral sequence fills a gap at the whole-genome level for the GII.9 genotype.

scholarly journals Exceptionally diverse morphotypes and genomes of crenarchaeal hyperthermophilic viruses

2004 ◽  
Vol 32 (2) ◽  
pp. 204-208 ◽  
Author(s):  
D. Prangishvili ◽  
R.A. Garrett
Keyword(s):  
Aquatic Ecosystems ◽  
African Swine Fever Virus ◽  
African Swine Fever ◽  
Open Reading Frames ◽  
Dna Viruses ◽  
Double Stranded Dna ◽  
Sequence Patterns ◽  
Hydrothermal Environments ◽  
Homologous Orfs ◽  
Reading Frames

The remarkable diversity of the morphologies of viruses found in terrestrial hydrothermal environments with temperatures >80°C is unprecedented for aquatic ecosystems. The best-studied viruses from these habitats have been assigned to novel viral families: Fuselloviridae, Lipothrixviridae and Rudiviridae. They all have double-stranded DNA genomes and infect hyperthermophilic crenarchaea of the orders Sulfolobales and Thermoproteales. Representatives of the different viral families share a few homologous ORFs (open reading frames). However, about 90% of all ORFs in the seven sequenced genomes show no significant matches to sequences in public databases. This suggests that these hyperthermophilic viruses have exceptional biochemical solutions for biological functions. Specific features of genome organization, as well as strategies for DNA replication, suggest that phylogenetic relationships exist between crenarchaeal rudiviruses and the large eukaryal DNA viruses: poxviruses, the African swine fever virus and Chlorella viruses. Sequence patterns at the ends of the linear genome of the lipothrixvirus AFV1 are reminiscent of the telomeric ends of linear eukaryal chromosomes and suggest that a primitive telomeric mechanism operates in this virus.

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