نتایج جستجو برای: rpb2
تعداد نتایج: 348 فیلتر نتایج به سال:
A number of proteins and drugs have been implicated in the process of transcriptional elongation by RNA polymerase (Pol) II, but the factors that govern the elongation rate (nucleotide additions per min) and processivity (nucleotide additions per initiation event) in vivo are poorly understood. Here, we show that a mutation in the Rpb2 subunit of Pol II reduces both the elongation rate and proc...
Multi-subunit RNA polymerases bind nucleotide triphosphate (NTP) substrates in the pretranslocated state and carry the dNMP-NTP base pair into the active site for phosphoryl transfer. NTP-driven translocation requires that NTP substrates enter the main-enzyme channel before loading into the active site. Based on this model, a new view of fidelity and efficiency of RNA synthesis is proposed. The...
We encountered an unfamiliar ascomycete fruiting body, fitting characteristics of the genus Kretzschmaria, which features in a stipitate ascigerous stroma with carbonaceous interior and disintegrating perithecia. In this study, we report and characterize a new species of the decaying fungus. Compared to other species, one of the notable features of this specimen (TPML150908-046) is its stromata...
The anamorph genus Metarhizium is composed of arthropod pathogens, several with broad geographic and host ranges. Members of the genus, including "M. anisopliae var. frigidum" nomen nudum and Metarhizium flavoviride, have been used as biological insecticides. In a recent revision of the genus the variety "M. anisopliae var. frigidum" was suggested to be a synonym of M. flavoviride based largely...
The mushroom of the genus Pleurotus in western China, called Bailinggu, is a precious edible fungus with high economic value. However, its taxonomical position is unclear. Some researchers regard it as a variety of P. eryngii, namely P. eryngii var. tuoliensis, whereas others consider it to be a subspecies of P. eryngii, viz. P. eryngii subsp. tuoliensis. A total of 51 samples representing seve...
Pezizomycotina is the largest subphylum of Ascomycota and includes the vast majority of filamentous, ascoma-producing species. Here we report the results from weighted parsimony, maximum likelihood and Bayesian phylogenetic analyses of five nuclear loci (SSU rDNA, LSU rDNA, RPB1, RPB2 and EF-lalpha) from 191 taxa. Nine of the 10 Pezizomycotina classes currently recognized were represented in th...
We report the isolation of a novel agent of subcutaneous mycosis from a 45-year-old Indian male immigrant in the United States. Phylogenetic analysis of partial small ribosomal subunit and large ribosomal subunit, internal transcribed spacer, partial translation elongation factor (TEF1), and RNA polymerase second largest subunit (rPB2) loci revealed that the strain was identical to another isol...
Five loci, nucSSU, nucLSU rDNA, TEF1, RPB1 and RPB2, are used for analysing 129 pleosporalean taxa representing 59 genera and 15 families in the current classification of Pleosporales. The suborder Pleosporineae is emended to include four families, viz.Didymellaceae, Leptosphaeriaceae, Phaeosphaeriaceae and Pleosporaceae. In addition, two new families are introduced, i.e. Amniculicolaceae and L...
Modern taxonomic studies of Agaricomycetes rely on the integrative analyses morphology, environmental data, geographic distribution, and usually several DNA loci. However, sampling selection loci for are commonly shallow. In this study, we suggest minimal numbers necessary specimens to sample analyze in order prevent inadequate decisions species groups with minor morphological genealogical diff...
Two new species from southern China, Russula albolutea and R. subpunicea, were described illustrated. is recognized by a yellowish white pileus with long striations at the margin, stipe tinge, globose to broadly ellipsoid basidiospores, hymenial cystidia that are mainly clavate apically often obtuse turn mauve in sulfovanillin, suprapellis consisting of chains short inflated cells attenuated te...
نمودار تعداد نتایج جستجو در هر سال
با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید