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Articles 91 - 103 of 103
Full-Text Articles in Life Sciences
Structures Of Darunavir-Resistant Hiv-1 Protease Mutant Reveal Atypical Binding Of Darunavir To Wide Open Flaps, Ying Zhang, Yu-Chung E. Chang, John M. Louis, Yuan Fang Wang, Robert W. Harrison, Irene Weber
Structures Of Darunavir-Resistant Hiv-1 Protease Mutant Reveal Atypical Binding Of Darunavir To Wide Open Flaps, Ying Zhang, Yu-Chung E. Chang, John M. Louis, Yuan Fang Wang, Robert W. Harrison, Irene Weber
Biology Faculty Publications
The molecular basis for high resistance to clinical inhibitors of HIV-1 protease (PR) was examined for the variant designated PRP51 that was selected for resistance to darunavir (DRV). High resolution crystal structures of PRP51 with the active site D25N mutation revealed a ligand-free form and an inhibitor-bound form showing a unique binding site and orientation for DRV. This inactivating mutation is known to increase the dimer dissociation constant and decrease DRV affinity of PR. The PRP51-D25N dimers were in the open conformation with widely separated flaps, as reported for other highly resistant variants. PRP51-D25N dimer bound two DRV molecules and ...
Immunomodulatory Activity Of Red Ginseng Against Influenza A Virus Infection, Jong Seok Lee, Hye Suk Hwang, Eun-Ju Ko, Yu-Na Lee, Young-Man Kwon, Min-Chul Kim, Sang-Moo Kang
Immunomodulatory Activity Of Red Ginseng Against Influenza A Virus Infection, Jong Seok Lee, Hye Suk Hwang, Eun-Ju Ko, Yu-Na Lee, Young-Man Kwon, Min-Chul Kim, Sang-Moo Kang
Biology Faculty Publications
Ginseng herbal medicine has been known to have beneficial effects on improving human health. We investigated whether red ginseng extract (RGE) has preventive effects on influenza A virus infection in vivo and in vitro. RGE was found to improve survival of human lung epithelial cells upon influenza virus infection. Also, RGE treatment reduced the expression of pro-inflammatory genes (IL-6, IL-8) probably in part through interference with the formation of reactive oxygen species by influenza A virus infection. Long-term oral administration of mice with RGE showed multiple immunomodulatory effects such as stimulating antiviral cytokine IFN-γ production after influenza A virus infection ...
Eccentric Contractions Disrupt Fkbp12 Content In Mouse Skeletal Muscle, Cory W. Baumann, Russell George Rogers Iii, Nidhi Gahlot, Chris Ingalls
Eccentric Contractions Disrupt Fkbp12 Content In Mouse Skeletal Muscle, Cory W. Baumann, Russell George Rogers Iii, Nidhi Gahlot, Chris Ingalls
Biology Faculty Publications
Strength deficits associated with eccentric contraction-induced muscle injury stem, in part, from impaired voltage-gated sarcoplasmic reticulum (SR) Ca2+ release. FKBP12 is a 12-kD immunophilin known to bind to the SR Ca2+ release channel (ryanodine receptor, RyR1) and plays an important role in excitation-contraction coupling. To assess the effects of eccentric contractions on FKBP12 content, we measured anterior crural muscle (tibialis anterior [TA], extensor digitorum longus [EDL], extensor hallucis longus muscles) strength and FKBP12 content in pellet and supernatant fractions after centrifugation via immunoblotting from mice before and after a single bout of either 150 eccentric or concentric contractions. There were ...
Biotic Mechanisms Of Community Stability Shift Along A Precipitation Gradient, Lauren M. Hallett, Joanna S. Hsu, Elisa E. Cleland, Scott L. Collins, Timothy L. Dickson, Emily C. Farrer, Laureano A. Gherardi, Katherine L. Gross, Richard J. Hobbs, Laura Turnball, Katharine N. Suding
Biotic Mechanisms Of Community Stability Shift Along A Precipitation Gradient, Lauren M. Hallett, Joanna S. Hsu, Elisa E. Cleland, Scott L. Collins, Timothy L. Dickson, Emily C. Farrer, Laureano A. Gherardi, Katherine L. Gross, Richard J. Hobbs, Laura Turnball, Katharine N. Suding
Biology Faculty Publications
Understanding how biotic mechanisms confer stability in variable environments is a fundamental quest in ecology, and one that is becoming increasingly urgent with global change. Several mechanisms, notably a portfolio effect associated with species richness,compensatory dynamics generated by negative species covariance and selection for stable dominant species populations can increase the stability of the overall community. While the importance of these mechanisms is debated, few studies have contrasted their importance in an environmental context. We analyzed nine long-term data sets of grassland species compositiont o investigate how two key environmental factors, precipitation amount and variability, may directly influence community ...
De Novo Assembly And Analysis Of The Northern Leopard Frog Rana Pipiens Transcriptome, Matthew K. Christenson, Andrew J. Trease, Lakshmi-Prasad Potluri, Andrew Jezewski, Vincent M. Davis, Lindsey A. Knight, Alan Kolok, Paul H. Davis
De Novo Assembly And Analysis Of The Northern Leopard Frog Rana Pipiens Transcriptome, Matthew K. Christenson, Andrew J. Trease, Lakshmi-Prasad Potluri, Andrew Jezewski, Vincent M. Davis, Lindsey A. Knight, Alan Kolok, Paul H. Davis
Biology Faculty Publications
The northern leopard frog Rana (Lithobates) pipiens is an important animal model, being used extensively in cancer, neurology, physiology, and biomechanical studies. R. pipiens is a native North American frog whose range extends from northern Canada to southwest United States, but over the past few decades its populations have declined significantly and is now considered uncommon in large portions of the United States and Canada. To aid in the study and conservation of R. pipiens, this paper describes the first R. pipiens transcriptome. The R. pipiens transcriptome was annotated using Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG ...
Revision Of Anacaena Thomson, 1859 Xi. Republic Of The Philippines (Coleoptera: Hydrophilidae), Hendrik Freitag
Revision Of Anacaena Thomson, 1859 Xi. Republic Of The Philippines (Coleoptera: Hydrophilidae), Hendrik Freitag
Biology Faculty Publications
The species of Anacaena THOMSON, 1859 (Coleoptera: Hydrophilidae) of the Republic of the Philippines are revised. Fifteen new species are described: Anacaena albay sp.n., A. amplocomata sp.n., A. apo sp.n., A. balabag sp.n., A. cordillera sp.n., A. davao sp.n., A. destructa sp.n., A. emergens sp.n., A. hemisphaerica sp.n., A. levistriata sp.n., A. philippina sp.n., A. princesa sp.n., A. quezona sp.n., A. sulcata sp.n., and A. zamboangana. All species are endemic to the Philippines, twelve are aquatic, the habitat of three species is unknown. All Philippine species ...
A Mega-Diverse Water Beetle Genus (Coleoptera: Hydraenidae: Hydraena Kugelann) Commonly Overlooked In Southeast Asia And Its Potential Use For Environmental Biomonitoring, Hendrik Freitag
Biology Faculty Publications
This study summarizes the current knowledge of the water beetle genus Hydraena Kugelann in Southeast Asia. The surprising species diversity and endemism rates in Hydraenopsis Janssens, the only subgenus present in Southeast Asia, are discussed. Data of five published Hydraena surveys from the Philippines and Singapore are used to evaluate species richness and the occurrence of species assemblages that are subject to the presence and quality of forests. Species richness was found to be generally higher in old grown forests. Some species appeared to be confined to near-natural forests. The denomination of indicator species is impeded by adequate sampling data ...
Prescribed Fire And Oak Sapling Physiology, Demography And Folivore Damage In An Ozark Woodland, D. Alexander Wait, Doug P. Aubrey
Prescribed Fire And Oak Sapling Physiology, Demography And Folivore Damage In An Ozark Woodland, D. Alexander Wait, Doug P. Aubrey
Biology Faculty Publications
Proceedings from the 2014 Central Hardwood Forest Conference in Carbondale, IL. The published proceedings include 27 papers and 47 abstracts pertaining to research conducted on biofuels and bioenergy, forest biometrics, forest ecology and physiology, forest economics, forest health including invasive species, forest soils and hydrology, geographic information systems, harvesting and utilization, silviculture, and wildlife management.
Sarpa Salpa Herbivory On Shallow Reaches Of Posidonia Oceanica Beds, Latina Steele, Kelly M. Darnell, Just Cebrián, Jose Luis Sanchez-Lizaso
Sarpa Salpa Herbivory On Shallow Reaches Of Posidonia Oceanica Beds, Latina Steele, Kelly M. Darnell, Just Cebrián, Jose Luis Sanchez-Lizaso
Biology Faculty Publications
Sarpa salpa herbivory on shallow reaches of Posidonia oceanica beds.— Here, we examined the temporal and small–scale spatial variability of grazing by the herbivorous fish Sarpa salpa on shallow beds of the temperate seagrass Posidonia oceanica. Herbivory intensity expressed as the percent of leaf area taken by fish bites was higher in September 2006 than in February 2007, and at 0.5 m than at 1.5 m during both sampling times. All S. salpa feeding at the shallow locations studied were juveniles, with bite sizes ranging from 0.03 to 0.62 cm2. Juveniles feeding at 1.5 ...
Genotyping-By-Sequencing For Populus Population Genomics: An Assessment Of Genome Sampling Patterns And Filtering Approaches, M. Schilling, Paul G. Wolf, A. M. Duffy, H. S. Rai, C. A. Rowe, B. A. Richardson, K. E. Mock
Genotyping-By-Sequencing For Populus Population Genomics: An Assessment Of Genome Sampling Patterns And Filtering Approaches, M. Schilling, Paul G. Wolf, A. M. Duffy, H. S. Rai, C. A. Rowe, B. A. Richardson, K. E. Mock
Biology Faculty Publications
Continuing advances in nucleotide sequencing technology are inspiring a suite of genomic approaches in studies of natural populations. Researchers are faced with data management and analytical scales that are increasing by orders of magnitude. With such dramatic advances comes a need to understand biases and error rates, which can be propagated and magnified in large-scale data acquisition and processing. Here we assess genomic sampling biases and the effects of various population-level data filtering strategies in a genotyping-by-sequencing (GBS) protocol. We focus on data from two species of Populus, because this genus has a relatively small genome and is emerging as ...
A Samoan Hebeloma With Phylogenetic Ties To The Western Pacific, Bradley R. Kropp
A Samoan Hebeloma With Phylogenetic Ties To The Western Pacific, Bradley R. Kropp
Biology Faculty Publications
Hebeloma ifeleletorum is described as a new species from American Samoa. Based on analyses of ITS and combined nLSU-ITS datasets H. ifeleletorum clusters with but is distinct from described species that have been placed in the genus Anamika by some. The phylogenetic relationship of H. ifeleletorum to the genus Anamika from Asia and to other species from Australia and New Caledonia suggests that H. ifeleletorum has origins in the western Pacific.
Production Of Destruxins From Metarhizium Spp. Fungi In Artificial Medium And In Endophytically Colonized Cowpea Plants, P. S. Golo, D. R. Gardner, Michelle M. Grilley, Jon Y. Takemoto, S. B. Krasnoff, M. S. Pires, E. K. K. Férnandes, V. R. Bittencourt, Donald W. Roberts
Production Of Destruxins From Metarhizium Spp. Fungi In Artificial Medium And In Endophytically Colonized Cowpea Plants, P. S. Golo, D. R. Gardner, Michelle M. Grilley, Jon Y. Takemoto, S. B. Krasnoff, M. S. Pires, E. K. K. Férnandes, V. R. Bittencourt, Donald W. Roberts
Biology Faculty Publications
Destruxins (DTXs) are cyclic depsipeptides produced by many Metarhizium isolates that have long been assumed to contribute to virulence of these entomopathogenic fungi. We evaluated the virulence of 20 Metarhizium isolates against insect larvae and measured the concentration of DTXs A, B, and E produced by these same isolates in submerged (shaken) cultures. Eight of the isolates (ARSEF 324, 724, 760, 1448, 1882, 1883, 3479, and 3918) did not produce DTXs A, B, or E during the five days of submerged culture. DTXs were first detected in culture medium at 2–3 days in submerged culture. Galleria mellonella and Tenebrio ...
Between Two Fern Genomes, E. B. Sessa, J. A. Banks, M. S. Barker, J. P. Der, A. M. Duffy, S. W. Graham, M. Hasebe, J. Langdale, F. W. Li, D. B. Marchant, K. M. Pryer, C. J. Rothfels, S. J. Roux, M. L. Salmi, E. M. Sigel, D. E. Soltis, P. S. Soltis, D. W. Stevenson, Paul G. Wolf
Between Two Fern Genomes, E. B. Sessa, J. A. Banks, M. S. Barker, J. P. Der, A. M. Duffy, S. W. Graham, M. Hasebe, J. Langdale, F. W. Li, D. B. Marchant, K. M. Pryer, C. J. Rothfels, S. J. Roux, M. L. Salmi, E. M. Sigel, D. E. Soltis, P. S. Soltis, D. W. Stevenson, Paul G. Wolf
Biology Faculty Publications
Ferns are the only major lineage of vascular plants not represented by a sequenced nuclear genome. This lack of genome sequence information significantly impedes our ability to understand and reconstruct genome evolution not only in ferns, but across all land plants. Azolla and Ceratopteris are ideal and complementary candidates to be the first ferns to have their nuclear genomes sequenced. They differ dramatically in genome size, life history, and habit, and thus represent the immense diversity of extant ferns. Together, this pair of genomes will facilitate myriad large-scale comparative analyses across ferns and all land plants. Here we review the ...