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Regulating the regulators: lysine modifications make their mark 总被引:11,自引:0,他引:11
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Proteins bearing the widely distributed SET domain have been shown to methylate lysine residues in histones and other proteins. In this issue, three-dimensional structures are reported for three very different SET domain-containing proteins. The structures reveal novel folds for several new domains, including SET, and provide early insights into mechanisms of catalysis and molecular recognition in this family of enzymes. 相似文献
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Savitree Limtong Nampueng Koowadjanakul 《World journal of microbiology & biotechnology》2012,28(12):3323-3335
Yeasts were isolated from the phylloplane of various plant species collected from seven provinces in Thailand. A total of 114 yeast strains and 10 strains of a yeast-like fungus were obtained by enrichment isolation from 91 out of 97 leaf samples (93.8?%). On the basis of the D1/D2 domain of the large subunit rRNA gene sequence similarity, 98 strains were identified to be of 36 yeast species in 18 genera belonging to Ascomycota viz. Candida, Clavispora, Cyberlindnera, Debaryomyces, Hanseniaspora, Hyphopichia, Kazachstania, Kluyveromyces, Kodamaea, Lachancea, Metschnikowia, Meyrozyma, Pichia, Starmerella, Torulaspora and Wickerhamomyces, and to Basidiomycota viz. Sporidiobolus and Trichosporon. Three strains were found to represent two novels Candida species which were previously described as C. sirachaensis and C. sakaeoensis. Ten strains of yeast-like fungus were identified as Aureobasidium pullulans of the phylum Ascomycota. Ascomycetous yeast species accounted altogether for 98.0?% of the 98 strains. The prevalent species was Candida tropicalis with a low frequency of isolation (14.3?%). Diversity of yeasts other than ballistoconidium-forming yeast in phylloplane in a tropical country in Asia has been reported for the first time. All strains obtained were accessed for the capability to produce IAA and result revealed that 39 strains in 20 species, one strain each of an undescribed and a novel species, and two unidentified strains showed the capability of producing IAA when cultivated in yeast extract peptone dextrose broth supplemented with 0.1?% l-tryptophan. All five strains of Candida maltosa produced relatively high concentrations of IAA. 相似文献
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Franz Oberwinkler 《Mycological Progress》2017,16(9):831-856
Recent results in taxonomic, phylogenetic and ecological studies of basidiomycetous yeast research are remarkable. Here, Pucciniomycotina with yeast stages are reviewed. The phylogenetic origin of single-cell basidiomycetes still remains unsolved. But the massive occurrence of yeasts in basal basidiomycetous taxa indicates their early evolutionary presence. Yeasts in Cryptomycocolacomycetes, Mixiomycetes, Agaricostilbomycetes, Cystobasidiomycetes, Septobasidiales, Heterogastridiomycetes, and Microbotryomycetes will be discussed. The apparent loss of yeast stages in Tritirachiomycetes, Atractiellomycetes, Helicobasidiales, Platygloeales, Pucciniales, Pachnocybales, and Classiculomycetes will be mentioned briefly for comparative purposes with dimorphic sister taxa. Since most phylogenetic papers suffer considerably from the lack of adequate illustrations, plates for representative species of orders have been arranged. The structural qualities are the prerequisites for specific functions that cannot be expressed by phylogenetic dendrograms. 相似文献
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N. Francesca R. Gaglio C. Stucchi S. De Martino G. Moschetti L. Settanni 《Journal of applied microbiology》2018,124(1):188-196