scholarly journals Complete genome sequences and phylogenetic analysis of Hepatitis B virus isolates from Serbia

2012 ◽  
Vol 64 (4) ◽  
pp. 1319-1326 ◽  
Author(s):  
Ivana Lazarevic ◽  
Maja Cupic ◽  
D. Delic ◽  
Neda Stojkovic-Svirtlih ◽  
Jamina Simonovic ◽  
...  

Although the genotype and subgenotype distribution of HBV isolates from Serbia has previously been reported, data about whole genome sequences from this area are scarce. This study included plasma samples from 5 chronically infected patients. Full genome amplification of the HBV isolates was performed by nested-PCR using 7 primer pairs, and the whole genome nucleotide sequences were obtained by direct sequencing. Two complete genome sequences belonged to D2 subgenotype (ayw3 HBsAg subtype), one to D1 (ayw2) and two to A2 (adw2). All 5 Serbian isolates clustered with sequences from the expected geographic regions and had nucleotide and coded protein length in accordance to their assigned genotypes, except for one HBeAg-negative isolate displaying G1896A mutation leading to a premature stop codon in the Pre-C region. The first complete genome sequences of HBV D1, D2 and A2 subgenotypes from Serbian patients showed characteristics similar to the nucleotide sequences of HBV isolates from other European and Middle East countries.

2016 ◽  
Vol 4 (2) ◽  
Author(s):  
Akira Yusa ◽  
Nozomu Iwabuchi ◽  
Hiroaki Koinuma ◽  
Takuya Keima ◽  
Yutaro Neriya ◽  
...  

Hydrangea ringspot virus (HdRSV) is a plant RNA virus, naturally infecting Hydrangea macrophylla . Here, we report the first genomic sequences of two HdRSV isolates from hydrangea plants in Japan. The overall nucleotide sequences of these Japanese isolates were 96.0 to 96.3% identical to those of known European isolates.


2016 ◽  
Vol 4 (4) ◽  
Author(s):  
William G. Miller ◽  
Emma Yee ◽  
Mary H. Chapman

Campylobacter hyointestinalis is isolated primarily from ruminants and swine, but is also occasionally isolated from humans. C. hyointestinalis is currently divided into two subspecies, C. hyointestinalis subsp. hyointestinalis and C. hyointestinalis subsp. lawsonii . This study describes the first closed whole-genome sequences of C. hyointestinalis subsp. hyointestinalis isolate LMG 9260 and C. hyointestinalis subsp. lawsonii isolate LMG 15993.


2020 ◽  
Vol 9 (20) ◽  
Author(s):  
Becky N. Aloo ◽  
Ernest R. Mbega ◽  
Billy A. Makumba ◽  
Ines Friedrich ◽  
Robert Hertel ◽  
...  

We present here the complete genome sequences of plant growth-promoting Klebsiella sp. strain MPUS7, Serratia sp. strain NGAS9, and Citrobacter sp. strain LUTT5, isolated from rhizosphere soils and tubers of potato (Solanum tuberosum L.) plants growing in the northern and southern highlands of Tanzania.


2017 ◽  
Vol 5 (14) ◽  
Author(s):  
Yu Kanesaki ◽  
Taichiro Ishige ◽  
Yuriko Sekigawa ◽  
Tomoko Kobayashi ◽  
Yasushi Torii ◽  
...  

ABSTRACT Actinomyces sp. strain Chiba101, isolated from an arthritic leg joint of a pig raised in Japan, is a bacterium closely related to Actinomyces denticolens. Here, we deciphered the complete genome sequence of Actinomyces sp. Chiba101 and the high-quality draft genome sequence of A. denticolens DSM 20671T.


2011 ◽  
Vol 92 (9) ◽  
pp. 2201-2208 ◽  
Author(s):  
Souvik Ghosh ◽  
Noriaki Adachi ◽  
Zipporah Gatheru ◽  
James Nyangao ◽  
Dai Yamamoto ◽  
...  

Although G2P[4] rotaviruses are common causes of acute childhood diarrhoea in Africa, to date there are no reports on whole genomic analysis of African G2P[4] strains. In this study, the nearly complete genome sequences of two Kenyan G2P[4] strains, AK26 and D205, detected in 1982 and 1989, respectively, were analysed. Strain D205 exhibited a DS-1-like genotype constellation, whilst strain AK26 appeared to be an intergenogroup reassortant with a Wa-like NSP2 genotype on the DS-1-like genotype constellation. The VP2-4, VP6-7, NSP1, NSP3 and NSP5 genes of strain AK26 and the VP2, VP4, VP7 and NSP1–5 genes of strain D205 were closely related to those of the prototype or other human G2P[4] strains. In contrast, their remaining genes were distantly related, and, except for NSP2 of AK26, appeared to originate from or share a common origin with rotavirus genes of artiodactyl (ruminant and camelid) origin. These observations highlight the complex evolutionary dynamics of African G2P[4] rotaviruses.


Blood ◽  
2011 ◽  
Vol 118 (21) ◽  
pp. 1136-1136
Author(s):  
Tarek Owaidah ◽  
Hala Abalkhail ◽  
Abdulrahman Al Musa ◽  
Hasan Mosmali ◽  
Albanyan Abdulmajeed ◽  
...  

Abstract Abstract 1136 Introduction: Glanzmann thrombasthenia (GT) is a rare autosomal recessive inherited bleeding disorder characterized by an impaired platelet aggregation and variable bleeding tendency. Inherited genetic mutations in integrin alpha IIb and beta3 (ITGA2B, ITGB3) result in a heterogeneity of the thrombasthenia phenotypes. It is phenotypically expressed in homozygotes or compound heterozygotes, given that 50% of normal aIIbb3 is sufficient to guarantee unimpaired platelet function that result in asymptomatic carriers. Defects in ITGB3 result in failure of binding of B3 and alpha IIb. These defects had been reported in Arabs (Iraqi Jews). We are reporting some results of Saudi GT genotype project. Materials & Methods: In this study, we analyzed the entire coding region ITGB3 gene using polymerase chain reaction (PCR) and direct sequencing with primers specifically designed to amplify the coding region of exon 1–15 and exon /Intron boundaries in a cohort of 51 GT patients diagnosed and treated in our institute. Results: Out of 51 cases from 20 families had mutational screening of the ITGB3 gene with the aim to detect the causative pathogenic mutations to enable the pre-symptomatic diagnosis in at risk family members. In this study we detect 1 novel germline mutation c.2190delC (p.Ser703fs) in exon 13. The mutation is predicted to result in premature stop codon and protein truncation. The mutation was detected in 6 patients in homozygous stat (3 males and 3 females). Three tested samples from the patients family members detected the mutation in heterozygous state and all of them were asymptomatic with normal PFA and Intact expression of Platelet Glycoprotiens CD41(Gpllb), CD42a(GPIX), CD42b(GPlb), and CD61(Gpllla). All the GT patients with this mutation were type I GT with Prolonged PFA and complete absence of CD41(Gpllb) and CD61(Gpllla) glycoprotein. Conclusion: The result of this study represents the first Molecular analysis of ITGB3 gene in Saudi Arabia and displays the existence of novel pathogenic and possibly a founder effect in Saudi families. Disclosures: No relevant conflicts of interest to declare.


2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Ilnam Kang ◽  
Suhyun Kim ◽  
Md. Rashedul Islam ◽  
Jang-Cheon Cho

Abstract The acI lineage of the phylum Actinobacteria is the most abundant bacterial group in most freshwater lakes. However, due to difficulties in laboratory cultivation, only two mixed cultures and some incomplete single-amplified or metagenome-derived genomes have been reported for the lineage. Here, we report the initial cultivation and complete genome sequences of four novel strains of the acI lineage from the tribes acI-A1, -A4, -A7, and -C1. The acI strains, initially isolated by dilution-to-extinction culturing, eventually failed to be maintained as axenic cultures. However, the first complete genomes of the acI lineage were successfully obtained from these initial cultures through whole genome amplification applied to more than hundreds of cultured acI cells. The genome sequences exhibited features of genome streamlining and showed that the strains are aerobic chemoheterotrophs sharing central metabolic pathways, with some differences among tribes that may underlie niche diversification within the acI lineage. Actinorhodopsin was found in all strains, but retinal biosynthesis was complete in only A1 and A4 tribes.


2018 ◽  
Vol 6 (22) ◽  
Author(s):  
Sota Inoue ◽  
Misato Tamura ◽  
Masashi Ugaki ◽  
Masashi Suzuki

ABSTRACT We report here the first complete nucleotide sequences of genomic RNAs of three Tomato aspermy virus (TAV) isolates in Japan. Analysis of these sequences showed that they have unique characteristics in RNAs 2 and 3. The Japanese isolates are similar to each other compared to other TAVs.


2019 ◽  
Vol 15 ◽  
pp. 117693431986133 ◽  
Author(s):  
Muneeb Bahar ◽  
Muhammad Tariq Pervez ◽  
Akhtar Ali ◽  
Masroor Ellahi Babar

The focus of this study was the computational analysis of hepatitis B virus (HBV) genotype D subgenotype D1 in Pakistan, China, and India. In total, 54 complete genome sequences of HBV genotype D subgenotype D1 were downloaded from National Center for Biotechnology Information (NCBI). Of these, 6 complete genome sequences were from Pakistan, 14 were from China, and 34 were from India. Sequence alignment showed less than 4% divergence in these sequences. C and X genes showed divergence of less than 3%. Comparison over the S gene showed more than 97% similarity among the nucleotide sequences of genotype D subgenotype D1. The identity and similarity matrix of 54 nucleotide sequences of HBV genotype D subgenotype D1 from Pakistan, China, and India revealed more than 93% identity and 93% similarity. Phylogenetic analysis highlighted that complete genome isolates of HBV circulating in Pakistan had the closest evolutionary relationship with its neighboring countries China and India. China’s (HQ833466) and Pakistan’s (AB583680.1) isolates shared the same ancestor. Gene structure analysis showed that “P” gene exons were the longest, about three-fourth of the genome size, whereas gene “S” had the second longest coding regions with 2 exons and 1 intron. However, “C” and “X” genes had 1 smallest exon. X proteins had proven role in spreading of the HBV infection diseases. For HBx analysis, 1 X protein sequence of HBV genotype D subgenotype D1 belonging to each country was obtained. Homology models of the 3 X proteins generated using SWISS-MODEL revealed GMQE (Global Model Quality Estimation) = 0.1. Global and local quality estimate scores including Z-scores for Qualitative Model Energy Analysis (QMEAN) C-beta, all-atom, solvation, and torsion energy scores were similar indicating good quality, accuracy, and reliability of the predicted models. Three-dimensional (3D) visualization showed similar structures and Ramachandran plots showed a high percentage of protein residues into the favorable region for X protein models.


Blood ◽  
1997 ◽  
Vol 90 (7) ◽  
pp. 2810-2818 ◽  
Author(s):  
Paulo R.M. Lima ◽  
José A.R. Gontijo ◽  
José B. Lopes de Faria ◽  
Fernando F. Costa ◽  
Sara T.O. Saad

Abstract We have studied the molecular defect underlying band 3 deficiency in one family with hereditary spherocytosis using nonradioactive single strand conformation polimorphism of polymerase chain reaction (PCR) amplified genomic DNA of the AE1 gene. By direct sequencing, a single base substitution in the splicing donor site of intron 8 (position + 1G → T) was identified. The study of the cDNA showed a skipping of exon 8. This exon skipping event is responsible for a frameshift leading to a premature stop codon 13 amino acids downstream. The distal urinary acidification test by furosemide was performed to verify the consequences of the band 3 deficiency in α intercalated cortical collecting duct cells (αICCDC). We found an increased basal urinary bicarbonate excretion, associated with an increased basal urinary pH and an efficient distal urinary acidification. We also tested the consequences of band 3 deficiency on the Na+/H+ exchanger, by the measurement of Na+/Li+ countertransport activity in red blood cells. The Na+/Li+ countertransport activity was increased threefold to sixfold in the patients compared with the controls. It is possible that band 3 deficiency in the kidney leads to a decrease in the reabsorption of HCO−3 in αICCDC and anion loss, which might be associated with an increased sodium-lithium countertransport activity.


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