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https://www.readbyqxmd.com/read/28818101/a-new-method-for-sequencing-the-hypervariable-plasmodium-falciparum-gene-var2csa-from-clinical-samples
#1
Antoine Dara, Mark A Travassos, Matthew Adams, Sarah Schaffer DeRoo, Elliott F Drábek, Sonia Agrawal, Miriam K Laufer, Christopher V Plowe, Joana C Silva
BACKGROUND: VAR2CSA, a member of the Plasmodium falciparum erythrocyte membrane protein 1 (PfEMP1) family, mediates the binding of P. falciparum-infected erythrocytes to chondroitin sulfate A, a surface-associated molecule expressed in placental cells, and plays a central role in the pathogenesis of placental malaria. VAR2CSA is a target of naturally acquired immunity and, as such, is a leading vaccine candidate against placental malaria. This protein is very polymorphic and technically challenging to sequence...
August 17, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28814314/erratum-to-the-advantages-of-smrt-sequencing
#2
Richard J Roberts, Mauricio O Carneiro, Michael C Schatz
No abstract text is available yet for this article.
August 16, 2017: Genome Biology
https://www.readbyqxmd.com/read/28798740/smrt-sequencing-revealed-mitogenome-characteristics-and-mitogenome-wide-dna-modification-pattern-in-ophiocordyceps-sinensis
#3
Xincong Kang, Liqin Hu, Pengyuan Shen, Rui Li, Dongbo Liu
Single molecule, real-time (SMRT) sequencing was used to characterize mitochondrial (mt) genome of Ophiocordyceps sinensis and to analyze the mt genome-wide pattern of epigenetic DNA modification. The complete mt genome of O. sinensis, with a size of 157,539 bp, is the fourth largest Ascomycota mt genome sequenced to date. It contained 14 conserved protein-coding genes (PCGs), 1 intronic protein rps3, 27 tRNAs and 2 rRNA subunits, which are common characteristics of the known mt genomes in Hypocreales. A phylogenetic tree inferred from 14 PCGs in Pezizomycotina fungi supports O...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28798737/complete-genome-analysis-of-thermus-parvatiensis-and-comparative-genomics-of-thermus-spp-provide-insights-into-genetic-variability-and-evolution-of-natural-competence-as-strategic-survival-attributes
#4
Charu Tripathi, Harshita Mishra, Himani Khurana, Vatsala Dwivedi, Komal Kamra, Ram K Negi, Rup Lal
Thermophilic environments represent an interesting niche. Among thermophiles, the genus Thermus is among the most studied genera. In this study, we have sequenced the genome of Thermus parvatiensis strain RL, a thermophile isolated from Himalayan hot water springs (temperature >96°C) using PacBio RSII SMRT technique. The small genome (2.01 Mbp) comprises a chromosome (1.87 Mbp) and a plasmid (143 Kbp), designated in this study as pTP143. Annotation revealed a high number of repair genes, a squeezed genome but containing highly plastic plasmid with transposases, integrases, mobile elements and hypothetical proteins (44%)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28790200/chromosome-end-repair-and-genome-stability-in-plasmodium-falciparum
#5
Susannah F Calhoun, Jake Reed, Noah Alexander, Christopher E Mason, Kirk W Deitsch, Laura A Kirkman
The human malaria parasite Plasmodium falciparum replicates within circulating red blood cells, where it is subjected to conditions that frequently cause DNA damage. The repair of DNA double-stranded breaks (DSBs) is thought to rely almost exclusively on homologous recombination (HR), due to a lack of efficient nonhomologous end joining. However, given that the parasite is haploid during this stage of its life cycle, the mechanisms involved in maintaining genome stability are poorly understood. Of particular interest are the subtelomeric regions of the chromosomes, which contain the majority of the multicopy variant antigen-encoding genes responsible for virulence and disease severity...
August 8, 2017: MBio
https://www.readbyqxmd.com/read/28770026/neisseria-lactamica-y92-1009-complete-genome-sequence
#6
Anish K Pandey, David W Cleary, Jay R Laver, Martin C J Maiden, Xavier Didelot, Andrew Gorringe, Robert C Read
We present the high quality, complete genome assembly of Neisseria lactamica Y92-1009 used to manufacture an outer membrane vesicle (OMV)-based vaccine, and a member of the Neisseria genus. The strain is available on request from the Public Health England Meningococcal Reference Unit. This Gram negative, dipplococcoid bacterium is an organism of worldwide clinical interest because human nasopharyngeal carriage is related inversely to the incidence of meningococcal disease, caused by Neisseria meningitidis. The organism sequenced was isolated during a school carriage survey in Northern Ireland in 1992 and has been the subject of a variety of laboratory and clinical studies...
2017: Standards in Genomic Sciences
https://www.readbyqxmd.com/read/28768522/exploring-the-reliability-and-acceptability-of-cognitive-tests-for-indigenous-australians-a-pilot-study
#7
Kylie M Dingwall, Allison O Gray, Annette R McCarthy, Jennifer F Delima, Stephen C Bowden
BACKGROUND: Reliable cognitive assessment for Indigenous Australians is difficult given that mainstream tests typically rely on Western concepts, content and values. A test's psychometric properties should therefore be assessed prior to use in other cultures. The aim of this pilot study was to examine the reliability and acceptability of four cognitive tests for Australian Aboriginal people. METHODS: Participants were 40 male and 44 female (N = 84) Aboriginal patients from Alice Springs Hospital...
August 2, 2017: BMC Psychology
https://www.readbyqxmd.com/read/28748222/an-improved-plasmodium-cynomolgi-genome-assembly-reveals-an-unexpected-methyltransferase-gene-expansion
#8
Erica M Pasini, Ulrike Böhme, Gavin G Rutledge, Annemarie Voorberg-Van der Wel, Mandy Sanders, Matt Berriman, Clemens Hm Kocken, Thomas Dan Otto
BACKGROUND: Plasmodium cynomolgi, a non-human primate malaria parasite species, has been an important model parasite since its discovery in 1907. Similarities in the biology of P. cynomolgi to the closely related, but less tractable, human malaria parasite P. vivax make it the model parasite of choice for liver biology and vaccine studies pertinent to P. vivax malaria. Molecular and genome-scale studies of P. cynomolgi have relied on the current reference genome sequence, which remains highly fragmented with 1,649 unassigned scaffolds and little representation of the subtelomeres...
2017: Wellcome Open Research
https://www.readbyqxmd.com/read/28724921/saliva-and-tooth-biofilm-bacterial-microbiota-in-adolescents-in-a-low-caries-community
#9
Linda Eriksson, Pernilla Lif Holgerson, Ingegerd Johansson
The oral cavity harbours a complex microbiome that is linked to dental diseases and serves as a route to other parts of the body. Here, the aims were to characterize the oral microbiota by deep sequencing in a low-caries population with regular dental care since childhood and search for association with caries prevalence and incidence. Saliva and tooth biofilm from 17-year-olds and mock bacteria communities were analysed using 16S rDNA Illumina MiSeq (v3-v4) and PacBio SMRT (v1-v8) sequencing including validity and reliability estimates...
July 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28701704/concatseq-a-method-for-increasing-throughput-of-single-molecule-sequencing-by-concatenating-short-dna-fragments
#10
Ulrich Schlecht, Janine Mok, Carolina Dallett, Jan Berka
Single molecule sequencing (SMS) platforms enable base sequences to be read directly from individual strands of DNA in real-time. Though capable of long read lengths, SMS platforms currently suffer from low throughput compared to competing short-read sequencing technologies. Here, we present a novel strategy for sequencing library preparation, dubbed ConcatSeq, which increases the throughput of SMS platforms by generating long concatenated templates from pools of short DNA molecules. We demonstrate adaptation of this technique to two target enrichment workflows, commonly used for oncology applications, and feasibility using PacBio single molecule real-time (SMRT) technology...
July 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28701143/smrt-gate-a-method-for-validation-of-synthetic-constructs-on-pacific-biosciences-sequencing-platforms
#11
Rosalinda D'Amore, James Johnson, Sam Haldenby, Neil Hall, Margaret Hughes, Ryan Joynson, John G Kenny, Nicola Patron, Christiane Hertz-Fowler, Anthony Hall
Current DNA assembly methods are prone to sequence errors, requiring rigorous quality control (QC) to identify incorrect assemblies or synthesized constructs. Such errors can lead to misinterpretation of phenotypes. Because of this intrinsic problem, routine QC analysis is generally performed on three or more clones using a combination of restriction endonuclease assays, colony PCR, and Sanger sequencing. However, as new automation methods emerge that enable high-throughput assembly, QC using these techniques has become a major bottleneck...
July 1, 2017: BioTechniques
https://www.readbyqxmd.com/read/28687524/pierpont-syndrome-associated-with-the-p-tyr446cys-missense-mutation-in-tbl1xr1
#12
Anne Slavotinek, Heather Pua, Ugur Hodoglugil, Jude Abadie, Joseph Shieh, Jessica Van Ziffle, Mark Kvale, Hane Lee, Pui-Yan Kwok, Neil Risch, Marta Sabbadini
We present a 7-year old male with severe delays, hypotonia and dysmorphic features who had striking, deep palmar and plantar creases and pillowing of the soft tissues of the palms and soles. His facial features included a high anterior hairline, small eyes with narrowed palpebral fissures, a bulbous nasal tip with a short columella, and a large mouth with a thin upper vermilion, and small chin. He had a submucous cleft palate, bilateral cryptorchidism and hydronephrosis. Cranial imaging demonstrated an Arnold Chiari malformation that was also present in his maternal uncle by report...
July 4, 2017: European Journal of Medical Genetics
https://www.readbyqxmd.com/read/28682810/spectral-temporal-modulated-ripple-discrimination-by-children-with-cochlear-implants
#13
David M Landsberger, Monica Padilla, Amy S Martinez, Laurie S Eisenberg
OBJECTIVES: A postlingually implanted adult typically develops hearing with an intact auditory system, followed by periods of deafness (or near deafness) and adaptation to the implant. For an early implanted child whose brain is highly plastic, the auditory system matures with consistent input from a cochlear implant. It is likely that the auditory system of early implanted cochlear implant users is fundamentally different than postlingually implanted adults. The purpose of this study is to compare the basic psychophysical capabilities and limitations of these two populations on a spectral resolution task to determine potential effects of early deprivation and plasticity...
July 4, 2017: Ear and Hearing
https://www.readbyqxmd.com/read/28679546/untangling-heteroplasmy-structure-and-evolution-of-an-atypical-mitochondrial-genome-by-pacbio-sequencing
#14
Jean Peccoud, Mohamed Amine Chebbi, Alexandre Cormier, Bouziane Moumen, Clément Gilbert, Isabelle Marcadé, Christopher Chandler, Richard Cordaux
The highly compact mitochondrial genome of terrestrial isopods (Oniscidae) presents two unusual features. First, several loci can individually encode two tRNAs, thanks to single-nucleotide polymorphisms at anticodon sites. Within-individual variation (heteroplasmy) at these loci is thought to have been maintained for millions of years because individuals that do not carry all tRNA genes die, resulting in strong balancing selection. Second, the oniscid mtDNA genome comes in two conformations: a ~14kb linear monomer and a ~28kb circular dimer comprising two monomer units fused in palindrome...
July 5, 2017: Genetics
https://www.readbyqxmd.com/read/28645579/anti-androgenic-mechanisms-of-bisphenol-a-involve-androgen-receptor-signaling-pathway
#15
Hui Wang, Zhen Ding, Qiao-Mei Shi, Xing Ge, Heng-Xue Wang, Meng-Xue Li, Gang Chen, Qi Wang, Qiang Ju, Jin-Peng Zhang, Mei-Rong Zhang, Li-Chun Xu
We have shown Bisphenol A (BPA) acts as an androgen receptor (AR) antagonist in the previous study. However, the mechanisms underlying anti-androgenic effects of BPA remain unclear. The objective of this study was to explore whether the AR signaling was involved in AR antagonism of BPA. The Cell Counting Kit-8 (CCK-8) assay and Real-Time Cell Analysis (RTCA) iCELLigence system were applied to analyze the mouse Sertoli cell TM4 proliferation. The mammalian two-hybrid assays were performed to investigate the effects of BPA on the AR amino- and carboxyl-terminal regions (N/C) interaction and the interactions of the AR with steroid receptor coactivator-1 (SRC-1), co-repressors including silencing mediator for thyroid hormone receptors (SMRT) and nuclear receptor co-repressor (NCoR)...
July 15, 2017: Toxicology
https://www.readbyqxmd.com/read/28633514/metagenomic-smrt-sequencing-based-exploration-of-novel-lignocellulose-degrading-capability-in-wood-detritus-from-torreya-nucifera-in-bija-forest-on-jeju-island
#16
Han Na Oh, Tae Kwon Lee, Jae Wan Park, Jee Hyun No, Dockyu Kim, Woo Jun Sul
Lignocellulose, mostly composed of cellulose, hemicellulose and lignin generated through secondary growth of woody plant, is considered as promising resources for bio-fuel. In order to use lignocellulose as a biofuel, the biodegradation besides high-cost chemical treatments were applied, but its knowledge on decomposition of lignocellulose occurring in a natural environment were insufficient. We analyzed 16S rRNA gene and metagenome to understand how the lignocellulose are decomposed naturally in decayed Torreya nucifera (L) of Bija forest (Bijarim) in Gotjawal, an ecologically distinct environment...
June 21, 2017: Journal of Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28623264/structural-characterization-of-the-smrt-corepressor-interacting-with-histone-deacetylase-7
#17
Danielle C Desravines, Itziar Serna Martin, Robert Schneider, Philippe J Mas, Nataliia Aleksandrova, Malene Ringkjøbing Jensen, Martin Blackledge, Darren J Hart
The 2525 amino acid SMRT corepressor is an intrinsically disordered hub protein responsible for binding and coordinating the activities of multiple transcription factors and chromatin modifying enzymes. Here we have studied its interaction with HDAC7, a class IIa deacetylase that interacts with the corepressor complex together with the highly active class I deacetylase HDAC3. The binding site of class IIa deacetylases was previously mapped to an approximate 500 amino acid region of SMRT, with recent implication of short glycine-serine-isoleucine (GSI) containing motifs...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28620408/quality-control-of-the-traditional-patent-medicine-yimu-wan-based-on-smrt-sequencing-and-dna-barcoding
#18
Jing Jia, Zhichao Xu, Tianyi Xin, Linchun Shi, Jingyuan Song
Substandard traditional patent medicines may lead to global safety-related issues. Protecting consumers from the health risks associated with the integrity and authenticity of herbal preparations is of great concern. Of particular concern is quality control for traditional patent medicines. Here, we establish an effective approach for verifying the biological composition of traditional patent medicines based on single-molecule real-time (SMRT) sequencing and DNA barcoding. Yimu Wan (YMW), a classical herbal prescription recorded in the Chinese Pharmacopoeia, was chosen to test the method...
2017: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28611492/genome-mining-and-predictive-functional-profiling-of-acidophilic-rhizobacterium-pseudomonas-fluorescens-pt14
#19
Pooja Rani, Nitish Kumar Mahato, Anukriti Sharma, Desiraju Lakshmi Narsimha Rao, Komal Kamra, Rup Lal
Pseudomonas fluorescens Pt14 is a non-pathogenic and acidophilic bacterium isolated from acidic soil (pH 4.65). Genome sequencing of strain Pt14 was performed using Single Molecule Real Time (SMRT) sequencing to get insights into unique existence of this strain in acidic environment. Complete genome sequence of this strain revealed a chromosome of 5,841,722 bp having 5354 CDSs and 88 RNAs. Phylogenomic reconstruction based on 16S rRNA gene, Average Nucleotide Identity (ANI) values and marker proteins revealed that strain Pt14 shared a common clade with P...
June 2017: Indian Journal of Microbiology
https://www.readbyqxmd.com/read/28606056/comparative-genome-and-transcriptome-analysis-reveals-distinctive-surface-characteristics-and-unique-physiological-potentials-of-pseudomonas-aeruginosa-atcc-27853
#20
Huiluo Cao, Yong Lai, Salim Bougouffa, Zeling Xu, Aixin Yan
BACKGROUND: Pseudomonas aeruginosa ATCC 27853 was isolated from a hospital blood specimen in 1971 and has been widely used as a model strain to survey antibiotics susceptibilities, biofilm development, and metabolic activities of Pseudomonas spp.. Although four draft genomes of P. aeruginosa ATCC 27853 have been sequenced, the complete genome of this strain is still lacking, hindering a comprehensive understanding of its physiology and functional genome. RESULTS: Here we sequenced and assembled the complete genome of P...
June 12, 2017: BMC Genomics
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