Abstract:
:In the filamentous ascomycete fungus Podospora anserina, senescence is associated with dramatic changes of the juvenile mitochondrial genome. During senescence specific regions of the non-senescent genome are excised, ligated and amplified as a plasmid. In this paper, we report our studies on nuclear-mitochondrial extracts for the presence of RNA-dependent DNA polymerase activity (reverse transcriptase). In so-called middle aged mycelia of race A, we detected a DNA polymerase possessing properties of a reverse transcriptase. It prefers the ribopolymer templates poly(rA)-oligo(dT)12-18 and poly(rCm)-oligo(dG)12-18 over the deoxypolymer template poly(dA)-oligo(dT)12-18. It also uses natural rabbit globin mRNA as a template. The enzymatic activity can clearly be distinguished from a second DNA polymerase activity found in the same extracts of both young and middle aged mycelia.
journal_name
Curr Genetjournal_title
Current geneticsauthors
Steinhilber W,Cummings DJdoi
10.1007/BF00418411subject
Has Abstractpub_date
1986-01-01 00:00:00pages
389-92issue
5eissn
0172-8083issn
1432-0983journal_volume
10pub_type
杂志文章相关文献
CURRENT GENETICS文献大全abstract::We have cloned and sequenced human and bovine cDNAs for the beta subunit of the ATP synthase (ATP-syn beta), a nuclear DNA (nDNA) encoded oxidative phosphorylation (OXPHOS) gene. The two cDNAs were found to share 99% amino acid homology and 94% nucleotide homology. The evolutionary rate of ATPsyn beta was then compare...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00434661
更新日期:1987-01-01 00:00:00
abstract::We have constructed a gene coding for the 12-kDa intermediate form of the 2s methionine-rich protein from Bertholletia excelsa seeds. This protein, expressed intracellularly in yeast, is characterised by a 20-min half-life. By adding 11 amino acids corresponding to the peroxisome-targeting sequence (PTSc) of luciferas...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00309924
更新日期:1994-11-01 00:00:00
abstract::The filamentous/invasive growth pathway is activated by nutrient limitation in the haploid form of the yeast Saccharomyces cerevisiae, whereas exposure to mating-pheromone causes cells to differentiate into gametes. Although these two pathways respond to very different stimuli and generate very different responses, th...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/s00294-009-0274-6
更新日期:2009-12-01 00:00:00
abstract::Group-I introns, containing open reading frames (ORFs) that code for homing endonucleases, are widely distributed amongst eukaryotic organellar genomes. However, endonucleases of the GIY-YIG subclass have a restricted distribution in mitochondria and bacteriophages, and have never been observed in plastids. We have fo...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00311888
更新日期:1995-06-01 00:00:00
abstract::A screening procedure for cell cycle mutants among is mutants of Physarum has been developed for unsynchronized microplasmodia. The synchronization of the microplasmodia and the ratio of pre- to post-mitotic nuclei were evaluated after a transient shift-up to the non-permissive temperature. In contrast with wild type ...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00390945
更新日期:1980-04-01 00:00:00
abstract::Selection of mutants of Saccharomyces cerevisiae sensitive to the DNA cross-linking agent nitrogen mustard (HN2) at two temperatures (23 °C and 36 °C) yielded two isolates with thermoconditionally enhanced (ts) sensitivity to the mutagen. Both were due to single recessive nuclear genes. Mutant allele snm1-2 (ts) showe...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00365693
更新日期:1981-11-01 00:00:00
abstract::The hybrid vector pCP2, consisting of the bacterial plasmid pBR325, the nuclear gene Leu-2 of Saccharomyces cerevisiae and a fragment of mitochondrial DNA from Cephalosporium acremonium, was found to associate with the nucleus in a transformed strain of Saccharomyces cerevisiae. This was inducted by (1) efficient expr...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00365643
更新日期:1983-04-01 00:00:00
abstract::Over the last decade, mutation studies have grown in popularity due to the affordability and accessibility of whole genome sequencing. As the number of species in which spontaneous mutation has been directly estimated approaches 20 across two domains of life, questions arise over the repeatability of results in such e...
journal_title:Current genetics
pub_type: 杂志文章,评审
doi:10.1007/s00294-016-0573-7
更新日期:2016-08-01 00:00:00
abstract::Work in recent years has produced indirect evidence to support the view that the phenomenon of suppressiveness in yeast is the result of the ability of the petite mtDNA to out-replicate the wild-type genome. We have developed a method, based on fluorography of gels containing restriction fragments of radioactively lab...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00418122
更新日期:1986-01-01 00:00:00
abstract::In order to develop an eukaryotic vector with the Podospora plasmid, further characterization is required of the mitochondrial DNA into which this plasmid is integrated, a physical map (restriction sites) of the Podospora chondriome (size 95 kb) has been completed. As prerequisite for the establishment of a genetic (f...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00365705
更新日期:1982-07-01 00:00:00
abstract::A screening of haploid yeast strains for enhanced resistance to nitrogen mustard (HN2) yielded a recessive mutant allele, hnm1, that conferred hyper-resistance (HYR) to HN2. Diploids, homo- or heterozygous for the HNM1 locus, exhibit normal wild-type like resistance while homozygosity for hnm1 leads to the phenotype H...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00318378
更新日期:1990-10-01 00:00:00
abstract::In order to analyse gene expression during fruit body development of the ectomychorrizal fungus Tuber borchii Vittad., a modified differential display procedure was set up. The procedure used is easier and faster than the traditional one and generates reproducible cDNA banding patterns that can be resolved on a standa...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/s00294-002-0343-6
更新日期:2002-12-01 00:00:00
abstract::When the beta 1-, beta 2- and beta 3-tubulin-specific DNAs from Drosophila melanogaster were used as probes to recognize tubulin-specific sequences in the chromosomes of Drosophila auraria, they were found to hybridize to the same polytene band in region 32C of the 2L polytene chromosome. Three overlapping clones were...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00712973
更新日期:1994-01-01 00:00:00
abstract::A main function of ectomycorrhizas, a symbiosis between certain soil fungi and fine roots of woody plants, is the exchange of plant-derived carbohydrates for fungus-derived nutrients. As it is required in large amounts, nitrogen is of special interest. A gene (AmAMT2) coding for a putative fungal ammonium importer was...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/s00294-006-0106-x
更新日期:2007-02-01 00:00:00
abstract::Emetine resistant mutants have been isolated in the fungus Podospora anserina. Genetic analysis of 75 mutants has shown that resistance is controlled by at least two genes, EmR1 and EmR2. In vitro studies showed that resistance to emetine in EmR1 and EMR2 mutants was due to alterations in the protein synthesis machine...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00397640
更新日期:1982-10-01 00:00:00
abstract::In fungi, sexual reproduction primarily depends on the interaction between peptide pheromones and their receptors. Most ascomycete fungi produce two classes of peptide mating pheromones, a simple peptide and a modified peptide. These peptides are recognized by their corresponding receptors on the surface of cells of t...
journal_title:Current genetics
pub_type: 杂志文章,评审
doi:10.1007/s00294-019-00968-w
更新日期:2019-10-01 00:00:00
abstract::In yeast (S. cerevisiae) the stringent response is known to include rapid, selective, and severe transcriptional curtailment for genes specifying cytoplasmic rRNAs and r-proteins. We have shown that transcription of the mitochondrial 21S rRNA gene is also congruently and selectively curtailed during the yeast stringen...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00336848
更新日期:1992-03-01 00:00:00
abstract::Cohesin is one of three multi-protein structural maintenance of chromosome (SMC) complexes that regulate eukaryotic chromosome dynamics. It forms a ring-shaped structure that embraces sister chromatids through interphase to promote their pairing. In preparation for mitosis, most cohesin is stripped from the chromosome...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/s00294-017-0691-x
更新日期:2017-10-01 00:00:00
abstract::Unlike most polymorphic markers in the Chlamydomonas eugametos and Chlamydomonas moewusii chloroplast DNAs (cpDNAs), the C. moewusii 6- and 21-kb extra sequences and the C. eugametos-specific CeLSU small middle dot 5 intron are transmitted to all of the few viable progeny in reciprocal crosses between the two green al...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/s002940050144
更新日期:1996-09-01 00:00:00
abstract::We describe the preparation of an in vitro translation system from heat shock-treated Aspergillus nidulans, capable of supporting efficient and faithful synthesis of proteins from natural and in vitro transcribed eukaryotic messages. In vitro synthesized prepro-alpha-factor was translocated across Aspergillus nidulans...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00434081
更新日期:1988-12-01 00:00:00
abstract::Chemoreceptor-based signaling is a major bacterial signal transduction mechanism. Escherichia coli, the traditional model, has five chemoreceptors. Recent genome analyses have shown that many bacteria have a much higher number of chemoreceptors. Pseudomonas putida KT2440 is an alternative model that has 27 chemorecept...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/s00294-016-0646-7
更新日期:2017-06-01 00:00:00
abstract::The wild diastatic yeast Saccharomyces cerevisiae NCYC 625 has been shown to be homozygous for the glucoamylase-specifying gene STA2. spoII-1-mapping has positioned STA2 on chromosome II. Expression of STA2 is suppressed in some but not all diploids capable of sporulation, and is also inhibited by unlinked nuclear sup...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00314873
更新日期:1990-04-01 00:00:00
abstract::To gain a deeper insight into the evolution of mating-type genes from filamentous ascomycetes, a comprehensive sequence analysis of PCR-amplified sequences corresponding to A- and a-specific mating-type sequences was undertaken. The study included nine homothallic (compatible) and eight heterothallic (incompatible) me...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/s002940050494
更新日期:1999-10-01 00:00:00
abstract::The separation and identification of siderophores produced by microorganisms is a time-consuming and an expensive procedure. We have developed a new and efficient method to identify siderophores using well-established Saccharomyces cerevisiae deletion mutants. The Deltafet3,arn strains fail to sustain growth, even whe...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/s00294-007-0145-y
更新日期:2007-09-01 00:00:00
abstract::Single-strand breaks (SSB) are discontinuities in one strand of the DNA double helix and are the most common type of damages that arise in cells. SSBs arise mainly from direct attack by intracellular metabolites, however, also essential nuclear processes generate SSBs as intermediates. During the catalytic cycle of DN...
journal_title:Current genetics
pub_type: 杂志文章,评审
doi:10.1007/s00294-019-00984-w
更新日期:2019-10-01 00:00:00
abstract::Cells divide with appropriate frequency by coupling division to growth-that is, cells divide only when they have grown sufficiently large. This process is poorly understood, but has been studied using cell size mutants. In principle, mutations affecting cell size could affect the mean size ("set-point" mutants), or th...
journal_title:Current genetics
pub_type: 杂志文章,评审
doi:10.1007/s00294-020-01098-4
更新日期:2020-11-05 00:00:00
abstract::Although cell division is usually portrayed as an equitable process by which a progenitor cell originates two identical daughter cells, there are multiple examples of asymmetric divisions that generate two cells that differ in their content, morphology and/or proliferative potential. The capacity of the cells to gener...
journal_title:Current genetics
pub_type: 杂志文章,评审
doi:10.1007/s00294-020-01074-y
更新日期:2020-08-01 00:00:00
abstract::NRE, the nitrogen regulatory protein of Penicillium chrysogenum, contains a single Cys2/Cys2-type zinc-finger motif followed immediately by a highly basic region. The zinc-finger domain was expressed to Escherichia coli as a fusion protein with beta-galactosidase. In order to test the putative DNA-binding ability of N...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00315785
更新日期:1995-07-01 00:00:00
abstract::Broad bean (Vicia faba) mitochondrial DNA (mtDNA) includes three circular plasmids: mt-plasmid 1 (1,704 ntp), mt-plasmid 2 (1,695 ntp) and mt-plasmid 3 (1,476 ntp). Partially replicated circular forms of these mt-plasmids have been observed in electron microscope preparations. Restriction enzymes that cleave either mt...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00569340
更新日期:1988-08-01 00:00:00
abstract::Genes are overexpressed when present in yeast cells on multicopy plasmids. Taking advantage of the protein amplification which results from this overexpression, a method has been developed for large scale detection of yeast genes on randomly cloned DNA sequences. It is based on the analysis, by two-dimensional gel ele...
journal_title:Current genetics
pub_type: 杂志文章
doi:10.1007/BF00318208
更新日期:1990-11-01 00:00:00