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https://www.readbyqxmd.com/read/28078358/major-histocompatibility-complex-haplotyping-and-long-amplicon-allele-discovery-in-cynomolgus-macaques-from-chinese-breeding-facilities
#1
Julie A Karl, Michael E Graham, Roger W Wiseman, Katelyn E Heimbruch, Samantha M Gieger, Gaby G M Doxiadis, Ronald E Bontrop, David H O'Connor
Very little is currently known about the major histocompatibility complex (MHC) region of cynomolgus macaques (Macaca fascicularis; Mafa) from Chinese breeding centers. We performed comprehensive MHC class I haplotype analysis of 100 cynomolgus macaques from two different centers, with animals from different reported original geographic origins (Vietnamese, Cambodian, and Cambodian/Indonesian mixed-origin). Many of the samples were of known relation to each other (sire, dam, and progeny sets), making it possible to characterize lineage-level haplotypes in these animals...
January 11, 2017: Immunogenetics
https://www.readbyqxmd.com/read/28077634/characterization-of-hcv-envelope-diversification-from-acute-to-chronic-infection-using-smrt-sequencing-within-a-sexually-transmitted-hepatitis-c-virus-cluster
#2
Cynthia K Y Ho, Jayna Raghwani, Sylvie Koekkoek, Richard H Liang, Jan T M Van der Meer, Marc Van Der Valk, Menno De Jong, Oliver G Pybus, Janke Schinkel, Richard Molenkamp
: In contrast to other available next generation sequencing platforms, Pacbio Single Molecule, Real-Time (SMRT) sequencing has the advantage of generating long reads, albeit with a relatively higher error rate in unprocessed data. Using this platform we longitudinally sampled and sequenced the hepatitis C virus (HCV) envelope genome region (1680 nt) from individuals belonging to a cluster of sexually-transmitted cases. All five subjects were HIV-1 coinfected and infected with a closely related strain of HCV genotype 4d...
January 11, 2017: Journal of Virology
https://www.readbyqxmd.com/read/28068902/bacterial-microbiota-of-kazakhstan-cheese-revealed-by-single-molecule-real-time-smrt-sequencing-and-its-comparison-with-belgian-kalmykian-and-italian-artisanal-cheeses
#3
Jing Li, Yi Zheng, Haiyan Xu, Xiaoxia Xi, Qiangchuan Hou, Shuzhen Feng, Laga Wuri, Yanfei Bian, Zhongjie Yu, Lai-Yu Kwok, Zhihong Sun, Tiansong Sun
BACKGROUND: In Kazakhstan, traditional artisanal cheeses have a long history and are widely consumed. The unique characteristics of local artisanal cheeses are almost completely preserved. However, their microbial communities have rarely been reported. The current study firstly generated the Single Molecule, Real-Time (SMRT) sequencing bacterial diversity profiles of 6 traditional artisanal cheese samples of Kazakhstan origin, followed by comparatively analyzed the microbiota composition between the current dataset and those from cheeses originated from Belgium, Russian Republic of Kalmykia (Kalmykia) and Italy...
January 9, 2017: BMC Microbiology
https://www.readbyqxmd.com/read/28068217/manual-curation-and-reannotation-of-the-genomes-of-clostridium-difficile-630%C3%AE-erm-and-clostridium-difficile-630
#4
Henning Dannheim, Thomas Riedel, Meina Neumann-Schaal, Boyke Bunk, Isabel Schober, Cathrin Spröer, Cynthia Maria Chibani, Sabine Gronow, Heiko Liesegang, Jörg Overmann, Dietmar Schomburg
We resequenced the genome of Clostridium difficile 630Δerm (DSM 28645), a model strain commonly used for the generation of insertion mutants. The genome sequence was obtained by a combination of single-molecule real-time (SMRT) and Illumina sequencing technology. Detailed manual curation and comparison to the previously published genomic sequence revealed sequence differences including inverted regions and the presence of plasmid pCD630. Manual curation of our previously deposited genome sequence of the parental strain 630 (DSM 27543) led to an improved genome sequence...
January 9, 2017: Journal of Medical Microbiology
https://www.readbyqxmd.com/read/28061749/organelle_pba-a-pipeline-for-assembling-chloroplast-and-mitochondrial-genomes-from-pacbio-dna-sequencing-data
#5
Aboozar Soorni, David Haak, David Zaitlin, Aureliano Bombarely
BACKGROUND: The development of long-read sequencing technologies, such as single-molecule real-time (SMRT) sequencing by PacBio, has produced a revolution in the sequencing of small genomes. Sequencing organelle genomes using PacBio long-read data is a cost effective, straightforward approach. Nevertheless, the availability of simple-to-use software to perform the assembly from raw reads is limited at present. RESULTS: We present Organelle-PBA, a Perl program designed specifically for the assembly of chloroplast and mitochondrial genomes...
January 7, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28056367/bacterial-community-structure-in-simultaneous-nitrification-denitrification-and-organic-matter-removal-process-treating-saline-mustard-tuber-wastewater-as-revealed-by-16s-rrna-sequencing
#6
Jiale Wang, Benzhou Gong, Wei Huang, Yingmu Wang, Jian Zhou
A simultaneous nitrification, denitrification and organic matter removal (SNDOR) process in sequencing batch biofilm reactor (SBBR) was established to treat saline mustard tuber wastewater (MTWW) in this study. An average COD removal efficiency of 86.48% and total nitrogen removal efficiency of 86.48% were achieved at 30gNaClL(-1) during 100days' operation. The underlying mechanisms were investigated by PacBio SMRT DNA sequencing (V1-V9) to analyze the microbial community structures and its variation from low salinity at 10gNaClL(-1) to high salinity at 30gNaClL(-1)...
December 23, 2016: Bioresource Technology
https://www.readbyqxmd.com/read/27998939/a-pipeline-for-local-assembly-of-minisatellite-alleles-from-single-molecule-sequencing-data
#7
Denye Ogeh, Richard Badge
MOTIVATION: The advent of Next Generation Sequencing (NGS) has led to the generation of enormous volumes of short read sequence data, cheaply and in reasonable time scales. Nevertheless, the quality of genome assemblies generated using NGS technologies has been greatly affected, compared to those generated using Sanger DNA sequencing. This is largely due to the inability of short read sequence data to scaffold repetitive structures, creating gaps, inversions and rearrangements and resulting in assemblies that are, at best, draft forms...
December 20, 2016: Bioinformatics
https://www.readbyqxmd.com/read/27997733/global-identification-of-alternative-splicing-via-comparative-analysis-of-smrt-and-illumina-based-rna-seq-in-strawberry
#8
Yongping Li, Cheng Dai, Chungen Hu, Zhongchi Liu, Chunying Kang
Alternative splicing (AS) is a key post-transcriptional regulatory mechanism, yet little is known about its roles in fruit crops. Here, AS was globally analyzed in the wild strawberry Fragaria vesca genome with RNA-seq data derived from different stages of fruit development. The AS landscape was characterized and compared between the single-molecule, real-time (SMRT) and Illumina RNA-seq platform. While SMRT has a lower sequencing depth, it identifies more genes undergoing AS (57.67% of detected multiexon genes) when it is compared with Illumina (33...
December 20, 2016: Plant Journal: for Cell and Molecular Biology
https://www.readbyqxmd.com/read/27997543/cell-cycle-constraints-and-environmental-control-of-local-dna-hypomethylation-in-%C3%AE-proteobacteria
#9
Silvia Ardissone, Peter Redder, Giancarlo Russo, Antonio Frandi, Coralie Fumeaux, Andrea Patrignani, Ralph Schlapbach, Laurent Falquet, Patrick H Viollier
Heritable DNA methylation imprints are ubiquitous and underlie genetic variability from bacteria to humans. In microbial genomes, DNA methylation has been implicated in gene transcription, DNA replication and repair, nucleoid segregation, transposition and virulence of pathogenic strains. Despite the importance of local (hypo)methylation at specific loci, how and when these patterns are established during the cell cycle remains poorly characterized. Taking advantage of the small genomes and the synchronizability of α-proteobacteria, we discovered that conserved determinants of the cell cycle transcriptional circuitry establish specific hypomethylation patterns in the cell cycle model system Caulobacter crescentus...
December 2016: PLoS Genetics
https://www.readbyqxmd.com/read/27966108/membrane-fusion-and-infection-of-the-influenza-hemagglutinin
#10
Sean T Smrt, Justin L Lorieau
The influenza virus is a major health concern associated with an estimated 5000 to 30,000 deaths every year (Reed et al. 2015) and a significant economic impact with the development of treatments, vaccinations and research (Molinari et al. 2007). The entirety of the influenza genome is comprised of only eleven coding genes. An enormous degree of variation in non-conserved regions leads to significant challenges in the development of inclusive inhibitors for treatment. The fusion peptide domain of the influenza A hemagglutinin (HA) is a promising candidate for treatment since it is one of the most highly conserved sequences in the influenza genome (Heiny et al...
December 14, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27964731/use-of-single-molecule-sequencing-for-comparative-genomics-of-an-environmental-and-a-clinical-isolate-of-clostridium-difficile-ribotype-078
#11
Katherine R Hargreaves, Anisha M Thanki, Bethany R Jose, Marco R Oggioni, Martha R J Clokie
BACKGROUND: How the pathogen Clostridium difficile might survive, evolve and be transferred between reservoirs within the natural environment is poorly understood. Some ribotypes are found both in clinical and environmental settings. Whether these strains are distinct from each another and evolve in the specific environments is not established. The possession of a highly mobile genome has contributed to the genetic diversity and ongoing evolution of C. difficile. Interpretations of genetic diversity have been limited by fragmented assemblies resulting from short-read length sequencing approaches and by a limited understanding of epigenetic regulation of diversity...
December 13, 2016: BMC Genomics
https://www.readbyqxmd.com/read/27940952/hapcut2-robust-and-accurate-haplotype-assembly-for-diverse-sequencing-technologies
#12
Peter Edge, Vineet Bafna, Vikas Bansal
Many tools have been developed for haplotype assembly - the reconstruction of individual haplotypes using reads mapped to a reference genome sequence. Due to increasing interest in obtaining haplotype-resolved human genomes, a range of new sequencing protocols and technologies have been developed to enable the reconstruction of whole-genome haplotypes. However, existing computational methods designed to handle specific technologies do not scale well on data from different protocols. We describe a new algorithm, HapCUT2, that extends our previous method (HapCUT) to handle multiple sequencing technologies...
December 9, 2016: Genome Research
https://www.readbyqxmd.com/read/27924023/methsmrt-an-integrative-database-for-dna-n6-methyladenine-and-n4-methylcytosine-generated-by-single-molecular-real-time-sequencing
#13
Pohao Ye, Yizhao Luan, Kaining Chen, Yizhi Liu, Chuanle Xiao, Zhi Xie
DNA methylation is an important type of epigenetic modifications, where 5- methylcytosine (5mC), 6-methyadenine (6mA) and 4-methylcytosine (4mC) are the most common types. Previous efforts have been largely focused on 5mC, providing invaluable insights into epigenetic regulation through DNA methylation. Recently developed single-molecule real-time (SMRT) sequencing technology provides a unique opportunity to detect the less studied DNA 6mA and 4mC modifications at single-nucleotide resolution. With a rapidly increased amount of SMRT sequencing data generated, there is an emerging demand to systematically explore DNA 6mA and 4mC modifications from these data sets...
January 4, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/27904456/methylome-analysis-of-two-xanthomonas-spp-using-single-molecule-real-time-sequencing
#14
Hoon Je Seong, Hye-Jee Park, Eunji Hong, Sung Chul Lee, Woo Jun Sul, Sang-Wook Han
Single-molecule real-time (SMRT) sequencing allows identification of methylated DNA bases and methylation patterns/motifs at the genome level. Using SMRT sequencing, diverse bacterial methylomes including those of Helicobacter pylori, Lactobacillus spp., and Escherichia coli have been determined, and previously unreported DNA methylation motifs have been identified. However, the methylomes of Xanthomonas species, which belong to the most important plant pathogenic bacterial genus, have not been documented. Here, we report the methylomes of Xanthomonas axonopodis pv...
December 2016: Plant Pathology Journal
https://www.readbyqxmd.com/read/27895111/discovery-and-genotyping-of-structural-variation-from-long-read-haploid-genome-sequence-data
#15
John Huddleston, Mark Jp Chaisson, Karyn Meltz Steinberg, Wes Warren, Kendra Hoekzema, David S Gordon, Tina A Graves-Lindsay, Katherine M Munson, Zev N Kronenberg, Laura Vives, Paul Peluso, Matthew Boitano, Chen-Shin Chin, Jonas Korlach, Richard K Wilson, Evan E Eichler
In an effort to more fully understand the full spectrum of human genetic variation, we generated deep single-molecule, real-time (SMRT) sequencing data from two haploid human genomes. Using an assembly-based approach (SMRT-SV), we systematically assessed each genome independently for structural variants (SVs) and indels resolving the sequence structure of 461,553 genetic variants from 2 bp to 28 kbp in length. We find that >89% of these variants have been missed as part of analysis of the 1000 Genomes Project even after adjusting for more common variants (MAF >1%)...
November 28, 2016: Genome Research
https://www.readbyqxmd.com/read/27891183/complete-genome-of-vibrio-parahaemolyticus-forc014-isolated-from-the-toothfish
#16
Sojin Ahn, Han Young Chung, Sooyeon Lim, Kwondo Kim, Suyeon Kim, Eun Jung Na, Kelsey Caetano-Anolles, Ju-Hoon Lee, Sangryeol Ryu, Sang Ho Choi, Heebal Kim
BACKGROUND: Foodborne illness can occur due to various pathogenic bacteria such as Staphylococcus aureus, Escherichia coli and Vibrio parahaemolyticus, and can cause severe gastroenteritis symptoms. In this study, we completed the genome sequence of a foodborne pathogen V. parahaemolyticus FORC_014, which was isolated from suspected contaminated toothfish from South Korea. Additionally, we extended our knowledge of genomic characteristics of the FORC_014 strain through comparative analysis using the complete sequences of other V...
2016: Gut Pathogens
https://www.readbyqxmd.com/read/27891116/complete-genome-sequence-of-clostridium-estertheticum-dsm-8809-a-microbe-identified-in-spoiled-vacuum-packed-beef
#17
Zhongyi Yu, Lynda Gunn, Evan Brennan, Rachael Reid, Patrick G Wall, Peadar Ó Gaora, Daniel Hurley, Declan Bolton, Séamus Fanning
Blown pack spoilage (BPS) is a major issue for the beef industry. Etiological agents of BPS involve members of a group of Clostridium species, including Clostridium estertheticum which has the ability to produce gas, mostly carbon dioxide, under anaerobic psychotrophic growth conditions. This spore-forming bacterium grows slowly under laboratory conditions, and it can take up to 3 months to produce a workable culture. These characteristics have limited the study of this commercially challenging bacterium. Consequently information on this bacterium is limited and no effective controls are currently available to confidently detect and manage this production risk...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27885609/methods-for-genome-wide-methylome-profiling-of-campylobacter-jejuni
#18
Kathy T Mou, Tyson A Clark, Usha K Muppirala, Andrew J Severin, Paul J Plummer
Methylation has a profound role in the regulation of numerous biological processes in bacteria including virulence. The study of methylation in bacteria has greatly advanced thanks to next-generation sequencing technologies. These technologies have expedited the process of uncovering unique features of many bacterial methylomes such as characterizing previously uncharacterized methyltransferases, cataloging genome-wide DNA methylations in bacteria, identifying the frequency of methylation at particular genomic loci, and revealing regulatory roles of methylation in the biology of various bacterial species...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/27881545/complete-genome-sequence-of-the-probiotic-strain-lactobacillus-salivarius-lpm01
#19
Empar Chenoll, Francisco M Codoñer, Juan F Martinez-Blanch, Marcelo Acevedo-Piérart, M Loreto Ormeño, Daniel Ramón, Salvador Genovés
Lactobacillus salivarius LPM01 (DSM 22150) is a probiotic strain able to improve health status in immunocompromised people. Here, we report its complete genome sequence deciphered by PacBio single-molecule real-time (SMRT) technology. Analysis of the sequence may provide insights into its functional activity and safety assessment.
November 23, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27856253/discovery-of-high-affinity-bcl6-binding-peptide-and-its-structure-activity-relationship
#20
Kotaro Sakamoto, Satoshi Sogabe, Yusuke Kamada, Nozomu Sakai, Kouhei Asano, Mie Yoshimatsu, Kou Ida, Yasuhiro Imaeda, Jun-Ichi Sakamoto
B cell lymphoma 6 (BCL6) is a transcriptional repressor that interacts with its corepressors BcoR and SMRT. Since this protein-protein interaction (PPI) induces activation and differentiation of B lymphocytes, BCL6 has been an attractive drug target for potential autoimmune disease treatments. Here we report a novel BCL6 inhibitory peptide, F1324 (Ac-LWYTDIRMSWRVP-OH), which we discovered using phage display technology; we also discuss this peptide's structure-activity relationship (SAR). For BCL6(5-129) binding, KD and IC50 values of F1324 were 0...
January 8, 2017: Biochemical and Biophysical Research Communications
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