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fungi secreted protein

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https://www.readbyqxmd.com/read/28484941/proteomics-as-a-tool-to-identify-new-targets-against-aspergillus-and-scedosporium-in-the-context-of-cystic-fibrosis
#1
Andoni Ramirez-Garcia, Aize Pellon, Idoia Buldain, Aitziber Antoran, Aitana Arbizu-Delgado, Xabier Guruceaga, Aitor Rementeria, Fernando L Hernando
Cystic fibrosis (CF) is a genetic disorder that increases the risk of suffering microbial, including fungal, infections. In this paper, proteomics-based information was collated relating to secreted and cell wall proteins with potential medical applications from the most common filamentous fungi in CF, i.e., Aspergillus and Scedosporium/Lomentospora species. Among the Aspergillus fumigatus secreted allergens, β-1,3-endoglucanase, the alkaline protease 1 (Alp1/oryzin), Asp f 2, Asp f 13/15, chitinase, chitosanase, dipeptidyl-peptidase V (DppV), the metalloprotease Asp f 5, mitogillin/Asp f 1, and thioredoxin reductase receive a special mention...
May 8, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28479603/ustilago-maydis-effectors-and-their-impact-on-virulence
#2
REVIEW
Daniel Lanver, Marie Tollot, Gabriel Schweizer, Libera Lo Presti, Stefanie Reissmann, Lay-Sun Ma, Mariana Schuster, Shigeyuki Tanaka, Liang Liang, Nicole Ludwig, Regine Kahmann
Biotrophic fungal plant pathogens establish an intimate relationship with their host to support the infection process. Central to this strategy is the secretion of a range of protein effectors that enable the pathogen to evade plant immune defences and modulate host metabolism to meet its needs. In this Review, using the smut fungus Ustilago maydis as an example, we discuss new insights into the effector repertoire of smut fungi that have been gained from comparative genomics and discuss the molecular mechanisms by which U...
May 8, 2017: Nature Reviews. Microbiology
https://www.readbyqxmd.com/read/28473815/gel-based-purification-and-biochemical-study-of-laccase-isozymes-from-ganoderma-sp-and-its-role-in-enhanced-cotton-callogenesis
#3
Amit Kumar, Deepti Singh, Krishna K Sharma, Sakshi Arora, Amarjeet K Singh, Sarvajeet S Gill, Barkha Singhal
Basidiomycetous fungi, Ganoderma lucidum MDU-7 and Ganoderma sp. kk-02 secreted multiple laccase isozymes under diverse growth condition. Aromatic compounds and metal salts were also found to regulate the differential expression of laccase isozymes from both the Ganoderma sp. Laccase isozymes induced in the presence of copper from G. lucidum MDU-7 were purified by gel-based (native-PAGE) purification method. The purity of laccase isozymes was checked by zymogram and SDS-PAGE. The SDS-PAGE of purified proteins confirmed the multimeric nature of laccase isozymes...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28464870/comparative-analysis-of-the-predicted-secretomes-of-rosaceae-scab-pathogens-venturia-inaequalis-and-v-pirina-reveals-expanded-effector-families-and-putative-determinants-of-host-range
#4
Cecilia H Deng, Kim M Plummer, Darcy A B Jones, Carl H Mesarich, Jason Shiller, Adam P Taranto, Andrew J Robinson, Patrick Kastner, Nathan E Hall, Matthew D Templeton, Joanna K Bowen
BACKGROUND: Fungal plant pathogens belonging to the genus Venturia cause damaging scab diseases of members of the Rosaceae. In terms of economic impact, the most important of these are V. inaequalis, which infects apple, and V. pirina, which is a pathogen of European pear. Given that Venturia fungi colonise the sub-cuticular space without penetrating plant cells, it is assumed that effectors that contribute to virulence and determination of host range will be secreted into this plant-pathogen interface...
May 2, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28460240/how-filamentous-plant-pathogen-effectors-are-translocated-to-host-cells
#5
REVIEW
Libera Lo Presti, Regine Kahmann
The interaction of microbes with "signature" plants is largely governed by secreted effector proteins, which serve to dampen plant defense responses and modulate host cell processes. Secreted effectors can function either in the apoplast or within plant cell compartments. How oomycetes and fungi translocate their effectors to plant cells is still poorly understood and controversial. While most oomycete effectors share a common 'signature' that was proposed to mediate their uptake via endocytosis, fungal effectors display no conserved motifs at the primary amino acid sequence level...
April 28, 2017: Current Opinion in Plant Biology
https://www.readbyqxmd.com/read/28439259/increased-biological-activity-of-aneurinibacillus-migulanus-strains-correlates-with-the-production-of-new-gramicidin-secondary-metabolites
#6
Faizah N Alenezi, Imen Rekik, Ali Chenari Bouket, Lenka Luptakova, Hedda J Weitz, Mostafa E Rateb, Marcel Jaspars, Stephen Woodward, Lassaad Belbahri
The soil-borne gram-positive bacteria Aneurinibacillus migulanus strain Nagano shows considerable potential as a biocontrol agent against plant diseases. In contrast, A. migulanus NCTC 7096 proved less effective for inhibition of plant pathogens. Nagano strain exerts biocontrol activity against some gram-positive and gram-negative bacteria, fungi and oomycetes through the production of gramicidin S (GS). Apart from the antibiotic effects, GS increases the rate of evaporation from the plant surface, reducing periods of surface wetness and thereby indirectly inhibiting spore germination...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28428776/mapping-and-identification-of-antifungal-peptides-in-the-putative-antifungal-protein-afpb-from-the-filamentous-fungus-penicillium-digitatum
#7
Sandra Garrigues, Mónica Gandía, Attila Borics, Florentine Marx, Paloma Manzanares, Jose F Marcos
Antifungal proteins (AFPs) from Ascomycetes are small cysteine-rich proteins that are abundantly secreted and show antifungal activity against non-producer fungi. A gene coding for a class B AFP (AfpB) was previously identified in the genome of the plant pathogen Penicillium digitatum. However, previous attempts to detect the AfpB protein were not successful despite the high expression of the corresponding afpB gene. In this work, the structure of the putative AfpB was modeled. Based on this model, four synthetic cysteine-containing peptides, PAF109, PAF112, PAF118, and PAF119, were designed and their antimicrobial activity was tested and characterized...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28424773/septins-focus-cellular-growth-for-host-infection-by-pathogenic-fungi
#8
REVIEW
Michelle Momany, Nicholas J Talbot
One of the key challenges faced by microbial pathogens is invasion of host tissue. Fungal pathogens adopt a number of distinct strategies to overcome host cell defenses, including the development of specialized infection structures, the secretion of proteins that manipulate host responses or cellular organization, and the ability to facilitate their own uptake by phagocytic mechanisms. Key to many of these adaptations is the considerable morphogenetic plasticity displayed by pathogenic species. Fungal pathogens can, for example, shift their growth habit between non-polarized spores, or yeast-like cells, and highly polarized hyphal filaments...
2017: Frontiers in Cell and Developmental Biology
https://www.readbyqxmd.com/read/28420736/deciphering-the-regulatory-network-between-the-srebp-pathway-and-protein-secretion-in-neurospora-crassa
#9
Lina Qin, Vincent W Wu, N Louise Glass
Sterol regulatory element binding proteins (SREBPs) are conserved from yeast to mammalian cells and function in the regulation of sterol homeostasis. In fungi, the SREBP pathway has been implicated in the adaptation to hypoxia and in virulence. In Neurospora crassa and Trichoderma reesei, the SREBP pathway also negatively regulates protein secretion under lignocellulolytic conditions. Here we utilized global transcriptional profiling combined with genetic and physiological analyses to address the regulatory link between the SREBP pathway and protein secretion in N...
April 18, 2017: MBio
https://www.readbyqxmd.com/read/28417377/isolation-and-preparation-of-extracellular-proteins-from-lignocellulose-degrading-fungi-for-comparative-proteomic-studies-using-mass-spectrometry
#10
Robert J Gruninger, Adrian Tsang, Tim A McAllister
Fungi utilize a unique mechanism of nutrient acquisition involving extracellular digestion. To understand the biology of these microbes, it is important to identify and characterize the function of proteins that are secreted and involved in this process. Mass spectrometry-based proteomics is a powerful tool to study complex mixtures of proteins and understand how the proteins produced by an organism change in response to different conditions. Many fungi are efficient decomposers of plant cell wall, and anaerobic fungi are well recognized for their ability to digest lignocellulose...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28410370/a-systematic-screen-for-morphological-abnormalities-during-fission-yeast-sexual-reproduction-identifies-a-mechanism-of-actin-aster-formation-for-cell-fusion
#11
Omaya Dudin, Laura Merlini, Felipe O Bendezú, Raphaël Groux, Vincent Vincenzetti, Sophie G Martin
In non-motile fungi, sexual reproduction relies on strong morphogenetic changes in response to pheromone signaling. We report here on a systematic screen for morphological abnormalities of the mating process in fission yeast Schizosaccharomyces pombe. We derived a homothallic (self-fertile) collection of viable deletions, which, upon visual screening, revealed a plethora of phenotypes affecting all stages of the mating process, including cell polarization, cell fusion and sporulation. Cell fusion relies on the formation of the fusion focus, an aster-like F-actin structure that is marked by strong local accumulation of the myosin V Myo52, which concentrates secretion at the fusion site...
April 2017: PLoS Genetics
https://www.readbyqxmd.com/read/28405784/genomic-and-functional-characterization-of-coleopteran-insect-specific-%C3%AE-amylase-inhibitor-gene-from-amaranthus-species
#12
Amey J Bhide, Sonal M Channale, Yashpal Yadav, Kabita Bhattacharjee, Pankaj K Pawar, V L Maheshwari, Vidya S Gupta, Sureshkumar Ramasamy, Ashok P Giri
The smallest 32 amino acid α-amylase inhibitor from Amaranthus hypochondriacus (AAI) is reported. The complete gene of pre-protein (AhAI) encoding a 26 amino acid (aa) signal peptide followed by the 43 aa region and the previously identified 32 aa peptide was cloned successfully. Three cysteine residues and one disulfide bond conserved within known α-amylase inhibitors were present in AhAI. Identical genomic and open reading frame was found to be present in close relatives of A. hypochondriacus namely Amaranthus paniculatus, Achyranthes aspera and Celosia argentea...
April 12, 2017: Plant Molecular Biology
https://www.readbyqxmd.com/read/28393921/characterization-of-a-basidiomycota-hydrophobin-reveals-the-structural-basis-for-a-high-similarity-class-i-subdivision
#13
Julie-Anne Gandier, David N Langelaan, Amy Won, Kylie O'Donnell, Julie L Grondin, Holly L Spencer, Philip Wong, Elisabeth Tillier, Christopher Yip, Steven P Smith, Emma R Master
Class I hydrophobins are functional amyloids secreted by fungi. They self-assemble into organized films at interfaces producing structures that include cellular adhesion points and hydrophobic coatings. Here, we present the first structure and solution properties of a unique Class I protein sequence of Basidiomycota origin: the Schizophyllum commune hydrophobin SC16 (hyd1). While the core β-barrel structure and disulphide bridging characteristic of the hydrophobin family are conserved, its surface properties and secondary structure elements are reminiscent of both Class I and II hydrophobins...
April 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28392110/a-transcriptional-program-for-arbuscule-degeneration-during-am-symbiosis-is-regulated-by-myb1
#14
Daniela S Floss, S Karen Gomez, Hee-Jin Park, Allyson M MacLean, Lena M Müller, Kishor K Bhattarai, Veronique Lévesque-Tremblay, Ignacio E Maldonado-Mendoza, Maria J Harrison
During the endosymbiosis formed between plants and arbuscular mycorrhizal (AM) fungi, the root cortical cells are colonized by branched hyphae called arbuscules, which function in nutrient exchange with the plant [1]. Despite their positive function, arbuscules are ephemeral structures, and their development is followed by a degeneration phase, in which the arbuscule and surrounding periarbuscular membrane and matrix gradually disappear from the root cell [2, 3]. Currently, the root cell's role in this process and the underlying regulatory mechanisms are unknown...
April 24, 2017: Current Biology: CB
https://www.readbyqxmd.com/read/28382652/a-new-promising-phylogenetic-marker-to-study-the-diversity-of-fungal-communities-the-glycoside-hydrolase-63-gene
#15
L Pérez-Izquierdo, E Morin, J P Maurice, F Martin, A Rincón, M Buée
In molecular ecology, the development of efficient molecular markers for fungi remains an important research domain. Nuclear ribosomal internal transcribed spacer (ITS) region was proposed as universal DNA barcode marker for Fungi, but this marker was criticized for idel-induced alignment problems and its potential lack of phylogenetic resolution. Our main aim was to develop a new phylogenetic gene and a putative functional marker, from single-copy gene, to describe fungal diversity. Thus, we developed a series of primers to amplify a polymorphic region of the Glycoside Hydrolase GH63 gene, encoding exo-acting α-glucosidases, in Basidiomycetes...
April 6, 2017: Molecular Ecology Resources
https://www.readbyqxmd.com/read/28365723/silkpathdb-a-comprehensive-resource-for-the-study-of-silkworm-pathogens
#16
Tian Li, Guo-Qing Pan, Charles R Vossbrinck, Jin-Shan Xu, Chun-Feng Li, Jie Chen, Meng-Xian Long, Ming Yang, Xiao-Fei Xu, Chen Xu, Bettina A Debrunner-Vossbrinck, Ze-Yang Zhou
Silkworm pathogens have been heavily impeding the development of sericultural industry and play important roles in lepidopteran ecology, and some of which are used as biological insecticides. Rapid advances in studies on the omics of silkworm pathogens have produced a large amount of data, which need to be brought together centrally in a coherent and systematic manner. This will facilitate the reuse of these data for further analysis. We have collected genomic data for 86 silkworm pathogens from 4 taxa (fungi, microsporidia, bacteria and viruses) and from 4 lepidopteran hosts, and developed the open-access Silkworm Pathogen Database (SilkPathDB) to make this information readily available...
January 1, 2017: Database: the Journal of Biological Databases and Curation
https://www.readbyqxmd.com/read/28361917/the-low-affinity-glucose-transporter-hxtb-is-also-involved-in-glucose-signalling-and-metabolism-in-aspergillus-nidulans
#17
Thaila Fernanda Dos Reis, Benjamin M Nitsche, Pollyne Borborema Almeida de Lima, Leandro José de Assis, Laura Mellado, Steven D Harris, Vera Meyer, Renato A Corrêa Dos Santos, Diego M Riaño-Pachón, Laure Nicolas Annick Ries, Gustavo H Goldman
One of the drawbacks during second-generation biofuel production from plant lignocellulosic biomass is the accumulation of glucose, the preferred carbon source of microorganisms, which causes the repression of hydrolytic enzyme secretion by industrially relevant filamentous fungi. Glucose sensing, subsequent transport and cellular signalling pathways have been barely elucidated in these organisms. This study therefore characterized the transcriptional response of the filamentous fungus Aspergillus nidulans to the presence of high and low glucose concentrations under continuous chemostat cultivation with the aim to identify novel factors involved in glucose sensing and signalling...
March 31, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28356329/effectors-of-filamentous-plant-pathogens-commonalities-amid-diversity
#18
REVIEW
Marina Franceschetti, Abbas Maqbool, Maximiliano J Jiménez-Dalmaroni, Helen G Pennington, Sophien Kamoun, Mark J Banfield
Fungi and oomycetes are filamentous microorganisms that include a diversity of highly developed pathogens of plants. These are sophisticated modulators of plant processes that secrete an arsenal of effector proteins to target multiple host cell compartments and enable parasitic infection. Genome sequencing revealed complex catalogues of effectors of filamentous pathogens, with some species harboring hundreds of effector genes. Although a large fraction of these effector genes encode secreted proteins with weak or no sequence similarity to known proteins, structural studies have revealed unexpected similarities amid the diversity...
June 2017: Microbiology and Molecular Biology Reviews: MMBR
https://www.readbyqxmd.com/read/28352091/genome-sequencing-and-analysis-of-talaromyces-pinophilus-provide-insights-into-biotechnological-applications
#19
Cheng-Xi Li, Shuai Zhao, Ting Zhang, Liang Xian, Lu-Sheng Liao, Jun-Liang Liu, Jia-Xun Feng
Species from the genus Talaromyces produce useful biomass-degrading enzymes and secondary metabolites. However, these enzymes and secondary metabolites are still poorly understood and have not been explored in depth because of a lack of comprehensive genetic information. Here, we report a 36.51-megabase genome assembly of Talaromyces pinophilus strain 1-95, with coverage of nine scaffolds of eight chromosomes with telomeric repeats at their ends and circular mitochondrial DNA. In total, 13,472 protein-coding genes were predicted...
March 28, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28346345/unconventional-transport-routes-of-soluble-and-membrane-proteins-and-their-role-in-developmental-biology
#20
Andrea Pompa, Francesca De Marchis, Maria Teresa Pallotta, Yoselin Benitez-Alfonso, Alexandra Jones, Kerstin Schipper, Kevin Moreau, Viktor Žárský, Gian Pietro Di Sansebastiano, Michele Bellucci
Many proteins and cargoes in eukaryotic cells are secreted through the conventional secretory pathway that brings proteins and membranes from the endoplasmic reticulum to the plasma membrane, passing through various cell compartments, and then the extracellular space. The recent identification of an increasing number of leaderless secreted proteins bypassing the Golgi apparatus unveiled the existence of alternative protein secretion pathways. Moreover, other unconventional routes for secretion of soluble or transmembrane proteins with initial endoplasmic reticulum localization were identified...
March 25, 2017: International Journal of Molecular Sciences
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