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https://www.readbyqxmd.com/read/28818726/identification-of-functional-interactome-of-a-key-cell-division-regulatory-protein-ceda-of-e-coli
#1
Pankaj Sharma, Anil Kumar Tomar, Bishwajit Kundu
Cell division is compromised in DnaAcos mutant Escherichia coli cells that results in filamentous cell morphology. This is countered by over-expression of CedA protein that induces cytokinesis and thus, regular cell morphology is regained; however via an unknown mechanism. To understand the process systematically, exact role of CedA should be deciphered. Protein interactions are crucial for functional organization of a cell and their identification helps in revealing exact function(s) of a protein and its binding partners...
August 14, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28815417/cellular-interactome-analysis-of-vaccinia-virus-k7-protein-identifies-three-transport-machineries-as-binding-partners-for-k7
#2
Ye Li, Youyang Ke, Leiliang Zhang
Identification of viral-host interacting proteins will contribute to understanding of how poxvirus exploits the host cellular machinery. The vaccinia virus gene K7R encodes a conserved protein K7 in most orthopoxviruses. To gain insight into the biology of K7, we investigated the cellular interactome of K7 by GST pulldown coupled with mass spectrometry. The top categories of identified proteins contained components of trafficking machineries. We selected key components of three transport machineries including coatomer, retromer, and CHEVI to further confirm their binding abilities to K7...
August 16, 2017: Virus Genes
https://www.readbyqxmd.com/read/28814324/cancerouspdomains-comprehensive-analysis-of-cancer-type-specific-recurrent-somatic-mutations-in-proteins-and-domains
#3
Seirana Hashemi, Abbas Nowzari Dalini, Adrin Jalali, Ali Mohammad Banaei-Moghaddam, Zahra Razaghi-Moghadam
BACKGROUND: Discriminating driver mutations from the ones that play no role in cancer is a severe bottleneck in elucidating molecular mechanisms underlying cancer development. Since protein domains are representatives of functional regions within proteins, mutations on them may disturb the protein functionality. Therefore, studying mutations at domain level may point researchers to more accurate assessment of the functional impact of the mutations. RESULTS: This article presents a comprehensive study to map mutations from 29 cancer types to both sequence- and structure-based domains...
August 16, 2017: BMC Bioinformatics
https://www.readbyqxmd.com/read/28814063/icave-an-open-source-tool-for-visualizing-biomolecular-networks-in-3d-stereoscopic-3d-and-immersive-3d
#4
Vaja Liluashvili, Selim Kalayci, Eugene Fluder, Manda Wilson, Aaron Gabow, Zeynep H Gümüs
Visualizations of biomolecular networks assist in systems-level data exploration in many cellular processes. Data generated from high-throughput experiments increasingly inform these networks, yet current tools do not adequately scale with concomitant increase in their size and complexity. We present an open source software platform, interactome-CAVE (iCAVE), for visualizing large and complex biomolecular interaction networks in 3D. Users can explore networks (i) in 3D using a desktop, (ii) in stereoscopic 3D using 3D-vision glasses and a desktop, or (iii) in immersive 3D within a CAVE environment...
August 1, 2017: GigaScience
https://www.readbyqxmd.com/read/28813674/an-integrated-systems-biology-approach-identifies-trim25-as-a-key-determinant-of-breast-cancer-metastasis
#5
Logan A Walsh, Mariano J Alvarez, Erich Y Sabio, Marsha Reyngold, Vladimir Makarov, Suranjit Mukherjee, Ken-Wing Lee, Alexis Desrichard, Şevin Turcan, Martin G Dalin, Vinagolu K Rajasekhar, Shuibing Chen, Linda T Vahdat, Andrea Califano, Timothy A Chan
At the root of most fatal malignancies are aberrantly activated transcriptional networks that drive metastatic dissemination. Although individual metastasis-associated genes have been described, the complex regulatory networks presiding over the initiation and maintenance of metastatic tumors are still poorly understood. There is untapped value in identifying therapeutic targets that broadly govern coordinated transcriptional modules dictating metastatic progression. Here, we reverse engineered and interrogated a breast cancer-specific transcriptional interaction network (interactome) to define transcriptional control structures causally responsible for regulating genetic programs underlying breast cancer metastasis in individual patients...
August 15, 2017: Cell Reports
https://www.readbyqxmd.com/read/28811661/myst2-kat7-histone-acetyltransferase-interaction-proteomics-reveals-tumour-suppressor-niam-as-a-novel-binding-partner-in-embryonic-stem-cells
#6
Mercedes Pardo, Lu Yu, Shihpei Shen, Peri Tate, Daniel Bode, Blake L Letney, Dawn E Quelle, William Skarnes, Jyoti S Choudhary
MYST histone acetyltransferases have crucial functions in transcription, replication and DNA repair and are hence implicated in development and cancer. Here we characterise Myst2/Kat7/Hbo1 protein interactions in mouse embryonic stem cells by affinity purification coupled to mass spectrometry. This study confirms that in embryonic stem cells Myst2 is part of H3 and H4 histone acetylation complexes similar to those described in somatic cells. We identify a novel Myst2-associated protein, the tumour suppressor protein Niam (Nuclear Interactor of ARF and Mdm2)...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811507/global-mapping-of-mirna-target-interactions-in-cattle-bos-taurus
#7
Troels K H Scheel, Michael J Moore, Joseph M Luna, Eiko Nishiuchi, John Fak, Robert B Darnell, Charles M Rice
With roles in development, cell proliferation and disease, micro-RNA (miRNA) biology is of great importance and a potential therapeutic target. Here we used cross-linking immunoprecipitation (CLIP) and ligation of miRNA-target chimeras on the Argonaute (AGO) protein to globally map miRNA interactions in the cow. The interactome is the deepest reported to date. miRNA targeting principles are consistent with observations in other species, but with expanded pairing rules. Experimental mapping robustly predicted functional miR-17 regulatory sites...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28808998/microfluidics-mass-spectrometry-of-protein-carbohydrate-interactions-applications-to-the-development-of-therapeutics-and-biomarker-discovery
#8
Alina D Zamfir
The functional interactions of carbohydrates and their protein receptors are the basis of biological events critical to the evolution of pathological states. Hence, for the past years, such interactions have become the focus of research for the development of therapeutics and discovery of novel glycan biomarkers based on their binding affinity. Due to the high sensitivity, throughput, reproducibility, and capability to ionize minor species in heterogeneous mixtures, microfluidics-mass spectrometry (MS) has recently emerged as a method of choice in protein-glycan interactomics...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28808136/eplant-visualizing-and-exploring-multiple-levels-of-data-for-hypothesis-generation-in-plant-biology
#9
Jamie Waese, Jim Fan, Asher Pasha, Hans Yu, Geoffrey Fucile, Ruian Shi, Matthew Cumming, Lawrence Kelley, Michael Sternberg, Vivek Krishnakumar, Erik Ferlanti, Jason Miller, Chris Town, Wolfgang Stuerzlinger, Nicholas J Provart
A big challenge in current systems biology research arises when different types of data must be accessed from separate sources and visualized using separate tools. The high cognitive load required to navigate such a workflow is detrimental to hypothesis generation. Accordingly, there is a need for a robust research platform that incorporates all data, and provides integrated search, analysis, and visualization features through a single portal. Here, we present ePlant (http://bar.utoronto.ca/eplant), a visual analytic tool for exploring multiple levels of Arabidopsis data through a zoomable user interface...
August 14, 2017: Plant Cell
https://www.readbyqxmd.com/read/28808021/kinetic-and-high-throughput-profiling-of-epigenetic-interactions-by-3d-carbene-chip-based-surface-plasmon-resonance-imaging-technology
#10
Shuai Zhao, Mo Yang, Wenfei Zhou, Baichao Zhang, Zhiqiang Cheng, Jiaxin Huang, Min Zhang, Zhiyou Wang, Rui Wang, Zhonglei Chen, Jinsong Zhu, Haitao Li
Chemical modifications on histones and DNA/RNA constitute a fundamental mechanism for epigenetic regulation. These modifications often function as docking marks to recruit or stabilize cognate "reader" proteins. So far, a platform for quantitative and high-throughput profiling of the epigenetic interactome is urgently needed but still lacking. Here, we report a 3D-carbene chip-based surface plasmon resonance imaging (SPRi) technology for this purpose. The 3D-carbene chip is suitable for immobilizing versatile biomolecules (e...
August 14, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28805067/the-lncrna-nespas-is-associated-with-osteoarthritis-progression-and-serves-as-a-potential-new-prognostic-biomarker
#11
Sujung Park, Myeungsoo Lee, Churl-Hong Chun, Eun-Jung Jin
INTRODUCTION: In this article, we explored the hypothesis that the long noncoding RNA, Nespas, promotes osteoarthritis (OA) by supporting abnormal lipid metabolism in human chondrocytes. MATERIALS AND METHODS: Human articular chondrocytes from osteoarthritis patients were used and expression level of Nespas were determined by real-time polymerase chain reaction. Introduction of Nespas and Nespas-associated genes/miRNAs were performed by using a lentiviral system...
August 1, 2017: Cartilage
https://www.readbyqxmd.com/read/28802714/in-silico-structure-based-approaches-to-discover-protein-protein-interaction-targeting-drugs
#12
REVIEW
Woong-Hee Shin, Charles W Christoffer, Daisuke Kihara
A core concept behind modern drug discovery is finding a small molecule that modulates a function of a target protein. This concept has been successfully applied since the mid-1970s. However, the efficiency of drug discovery is decreasing because the druggable target space in the human proteome is limited. Recently, protein-protein interaction (PPI) has been identified asan emerging target space for drug discovery. PPI plays a pivotal role in biological pathways including diseases. Current human interactome research suggests that the number of PPIs is between 130,000 and 650,000, and only a small number of them have been targeted as drug targets...
August 9, 2017: Methods: a Companion to Methods in Enzymology
https://www.readbyqxmd.com/read/28798368/global-temporal-dynamic-landscape-of-pathogen-mediated-subversion-of-arabidopsis-innate-immunity
#13
Bharat Mishra, Yali Sun, Hadia Ahmed, Xiaoyu Liu, M Shahid Mukhtar
The universal nature of networks' structural and physical properties across diverse systems offers a better prospect to elucidate the interplay between a system and its environment. In the last decade, several large-scale transcriptome and interactome studies were conducted to understand the complex and dynamic nature of interactions between Arabidopsis and its bacterial pathogen, Pseudomonas syringae pv. tomato DC3000. We took advantage of these publicly available datasets and performed "-omics"-based integrative, and network topology analyses to decipher the transcriptional and protein-protein interaction activities of effector targets...
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28794006/identification-of-the-sox2-interactome-by-bioid-reveals-ep300-as-a-mediator-of-sox2-dependent-squamous-differentiation-and-lung-squamous-cell-carcinoma-growth
#14
Bo Ram Kim, Etienne Coyaud, Estelle Laurent, Jonathan St-Germain, Emily Van de Laar, Ming Sound Tsao, Brian Raught, Nadeem Moghal
Lung cancer is the leading cause of cancer mortality worldwide, with squamous cell carcinoma (SQCC) being the second most common form. SQCCs are thought to originate in bronchial basal cells through an injury response to smoking, which results in this stem cell population committing to hyperplastic squamous rather than mucinous and ciliated fates. Copy number gains in SOX2 in the region of 3q26-28 occur in 94% of SQCCs, and appear to act both early and late in disease progression by stabilizing the initial squamous injury response in stem cells and promoting growth of invasive carcinoma...
August 9, 2017: Molecular & Cellular Proteomics: MCP
https://www.readbyqxmd.com/read/28793925/perturbed-human-sub-networks-by-fusobacterium-nucleatum-candidate-virulence-proteins
#15
Andreas Zanzoni, Lionel Spinelli, Shérazade Braham, Christine Brun
BACKGROUND: Fusobacterium nucleatum is a gram-negative anaerobic species residing in the oral cavity and implicated in several inflammatory processes in the human body. Although F. nucleatum abundance is increased in inflammatory bowel disease subjects and is prevalent in colorectal cancer patients, the causal role of the bacterium in gastrointestinal disorders and the mechanistic details of host cell functions subversion are not fully understood. RESULTS: We devised a computational strategy to identify putative secreted F...
August 10, 2017: Microbiome
https://www.readbyqxmd.com/read/28793853/equine-skeletal-muscle-adaptations-to-exercise-and-training-evidence-of-differential-regulation-of-autophagosomal-and-mitochondrial-components
#16
Kenneth Bryan, Beatrice A McGivney, Gabriella Farries, Paul A McGettigan, Charlotte L McGivney, Katie F Gough, David E MacHugh, Lisa M Katz, Emmeline W Hill
BACKGROUND: A single bout of exercise induces changes in gene expression in skeletal muscle. Regular exercise results in an adaptive response involving changes in muscle architecture and biochemistry, and is an effective way to manage and prevent common human diseases such as obesity, cardiovascular disorders and type II diabetes. However, the biomolecular mechanisms underlying such responses still need to be fully elucidated. Here we performed a transcriptome-wide analysis of skeletal muscle tissue in a large cohort of untrained Thoroughbred horses (n = 51) before and after a bout of high-intensity exercise and again after an extended period of training...
August 9, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28792001/implicating-candidate-genes-at-gwas-signals-by-leveraging-topologically-associating-domains
#17
Gregory P Way, Daniel W Youngstrom, Kurt D Hankenson, Casey S Greene, Struan Fa Grant
Genome-wide association studies (GWAS) have contributed significantly to the understanding of complex disease genetics. However, GWAS only report association signals and do not necessarily identify culprit genes. As most signals occur in non-coding regions of the genome, it is often challenging to assign genomic variants to the underlying causal mechanism(s). Topologically associating domains (TADs) are primarily cell-type-independent genomic regions that define interactome boundaries and can aid in the designation of limits within which an association most likely impacts gene function...
August 9, 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28782718/merging-in-silico-and-in-vitro-salivary-protein-complex-partners-using-the-string-database-a-tutorial
#18
Karla Tonelli Bicalho Crosara, Eduardo Buozi Moffa, Yizhi Xiao, Walter Luiz Siqueira
Protein-protein interaction is a common physiological mechanism for protection and actions of proteins in an organism. The identification and characterization of protein-protein interactions in different organisms is necessary to better understand their physiology and to determine their efficacy. In a previous in vitro study using mass spectrometry, we identified 43 proteins that interact with histatin 1. Six previously documented interactors were confirmed and 37 novel partners were identified. In this tutorial, we aimed to demonstrate the usefulness of the STRING database for studying protein-protein interactions...
August 3, 2017: Journal of Proteomics
https://www.readbyqxmd.com/read/28775156/the-sharpin-interactome-reveals-a-role-for-sharpin-in-lamellipodium-formation-via-the-arp2-3-complex
#19
Meraj H Khan, Siiri I Salomaa, Guillaume Jacquemet, Umar Butt, Mitro Miihkinen, Takahiro Deguchi, Elena Kremneva, Pekka Lappalainen, Martin J Humphries, Jeroen Pouwels
Sharpin, a multifunctional adaptor protein, regulates several signalling pathways. For example, Sharpin enhances signal-induced NF-κB signalling as part of the linear ubiquitin assembly complex (LUBAC) and inhibits integrins, the T cell receptor, caspase1 and PTEN. However, despite recent insights into Sharpin and LUBAC function, a systematic approach to identify signalling pathways regulated by Sharpin has not been reported. Here, we present the first 'Sharpin interactome', which identifies a large amount of novel potential Sharpin interactors in addition to several known ones...
August 3, 2017: Journal of Cell Science
https://www.readbyqxmd.com/read/28767318/the-gut-microbiome-and-mental-health-implications-for-anxiety-and-trauma-related-disorders
#20
Stefanie Malan-Muller, Mireia Valles-Colomer, Jeroen Raes, Christopher A Lowry, Soraya Seedat, Sian M J Hemmings
Biological psychiatry research has long focused on the brain in elucidating the neurobiological mechanisms of anxiety- and trauma-related disorders. This review challenges this assumption and suggests that the gut microbiome and its interactome also deserve attention to understand brain disorders and develop innovative treatments and diagnostics in the 21st century. The recent, in-depth characterization of the human microbiome spurred a paradigm shift in human health and disease. Animal models strongly suggest a role for the gut microbiome in anxiety- and trauma-related disorders...
August 2, 2017: Omics: a Journal of Integrative Biology
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