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Wyszukujesz frazę "Rytka, Joanna" wg kryterium: Autor

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    Wyświetlanie 1-8 z 8
    Tytuł:
    Saccharomyces cerevisiae - a model organism for the studies on vacuolar transport.
    Autorzy:
    Kucharczyk, Róża
    Rytka, Joanna
    Powiązania:
    https://bibliotekanauki.pl/articles/1044044.pdf
    Data publikacji:
    2001
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    vacuole
    vesicles
    intracellular transport
    phagocytosis
    endocytosis
    yeast
    Opis:
    The role of the yeast vacuole, a functional analogue of the mammalian lysosome, in the turnover of proteins and organelles has been well documented. This review provides an overview of the current knowledge of vesicle mediated vacuolar transport in the yeast Saccharomyces cerevisiae cells. Due to the conservation of the molecular transport machinery S. cerevisiae has become an important model system of vacuolar trafficking because of the facile application of genetics, molecular biology and biochemistry.
    Źródło:
    Acta Biochimica Polonica; 2001, 48, 4; 1025-1042
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The KRR1 gene encodes a protein required for 18S rRNA synthesis and 40S ribosomal subunit assembly in Saccharomyces cerevisiae.
    Autorzy:
    Gromadka, Robert
    Rytka, Joanna
    Powiązania:
    https://bibliotekanauki.pl/articles/1044220.pdf
    Data publikacji:
    2000
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    ribosome
    rRNA processing
    yeast
    Opis:
    The newly discovered Saccharomyces cerevisiae gene KRR1 (YCL059c) encodes a protein essential for cell viability. Krr1p contains a motif of clustered basic amino acids highly conserved in the evolutionarly distant species from yeast to human. We demonstrate that Krr1p is localized in the nucleolus. The KRR1 gene is highly expressed in dividing cells and its expression ceases almost completely when cells enter the stationary phase. In vivo depletion of Krr1p leads to drastic reduction of 40S ribosomal subunits due to defective 18S rRNA synthesis. We propose that Krr1p is required for proper processing of pre-rRNA and the assembly of preribosomal 40S subunits.
    Źródło:
    Acta Biochimica Polonica; 2000, 47, 4; 993-1005
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Regulation of sporulation in the yeast Saccharomyces cerevisiae
    Autorzy:
    Piekarska, Iga
    Rytka, Joanna
    Rempola, Bozenna
    Powiązania:
    https://bibliotekanauki.pl/articles/1040359.pdf
    Data publikacji:
    2010
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    sporulation
    meiosis
    transcriptional regulation
    Saccharomyces cerevisiae
    Opis:
    Sporulation of the budding yeast Saccharomyces cerevisiae - equivalent to gametogenesis in higher organisms, is a complex differentiation program induced by starvation of cells for nitrogen and carbon. Such environmental conditions activate coordinated, sequential changes in gene expression leading to production of haploid, stress-resistant spores. Sporulation comprises two rounds of meiosis coupled with spore morphogenesis and is tightly controlled to ensure viable progeny. This review concerns the regulation of differentiation process by nutritional and transcriptional signals.
    Źródło:
    Acta Biochimica Polonica; 2010, 57, 3; 241-250
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Induction of the synthesis of an additional family of long-chain dolichols in the yeast Saccharomyces cerevisiae. Effect of starvation and ageing.
    Autorzy:
    Szkopinska, Anna
    Swiezewska, Ewa
    Rytka, Joanna
    Powiązania:
    https://bibliotekanauki.pl/articles/1043750.pdf
    Data publikacji:
    2002
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    glucose
    cis-prenyltransferases
    nitrogen starvation
    yeast
    Opis:
    The yeast Saccharomyces cerevisiae strain W303 synthesizes in the early logarithmic phase of growth dolichols of 14-18 isoprene residues. The analysis of the polyisoprenoids present in the stationary phase revealed an additional family which proved to be also dolichols but of 19-24 isoprene residues, constituting 39% of the total dolichols. The transfer of early logarithmic phase cells to a starvation medium lacking glucose or nitrogen resulted in the synthesis of the longer chain dolichols. The additional family of dolichols represented 13.8% and 10.3% of total dolichols in the glucose and nitrogen deficient media, respectively. The level of dolichols in yeast cells increased with the age of the cultures. Since both families of dolichols are present in stationary phase cells we postulate that the longer chain dolichols may be responsible for the physico-chemical changes in cellular membranes allowing yeast cells to adapt to nutrient deficient conditions to maintain long-term viability.
    Źródło:
    Acta Biochimica Polonica; 2002, 49, 3; 781-787
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Functional and physical interactions of Krr1p, a Saccharomyces cerevisiae nucleolar protein.
    Autorzy:
    Gromadka, Robert
    Karkusiewicz, Iwona
    Rempoła, Bożenna
    Rytka, Joanna
    Powiązania:
    https://bibliotekanauki.pl/articles/1043338.pdf
    Data publikacji:
    2004
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    S. pombe
    S. cerevisiae
    suppressors
    transcription
    ribosomal proteins
    Opis:
    The Krr1 protein of Saccharomyces cerevisiae is involved in processing of pre-rRNA and assembly of pre-ribosomal 40S subunits. To further investigate the function of Krr1p we constructed a conditional cold sensitive mutant krr1-21, and isolated seven genes from Schizosaccharomyces pombe whose products suppressed the cold sensitive phenotype of krr1-21 cells. Among the multicopy suppressors we found genes coding for translation elongation factor EF-1α, a putative ribose methyltransferase and five genes encoding ribosomal proteins. Using the tandem affinity purification (TAP) method we identified thirteen S. cerevisiae ribosomal proteins interacting with Krr1p. Taken together, these results indicate that Krr1p interacts functionally as well as physically with ribosomal proteins. Northern blot analysis revealed that changes in the level of krr1-21 mRNA were accompanied by similar changes in the level of mRNAs of genes encoding ribosomal proteins. Thus, Krr1p and the genes encoding ribosomal proteins it interacts with seem to be coordinately regulated at the level of transcription.
    Źródło:
    Acta Biochimica Polonica; 2004, 51, 1; 173-187
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Anaerobic growth of Saccharomyces cerevisiae alleviates the lethal effect of phosphotyrosyl phosphatase activators depletion.
    Autorzy:
    Rempola, Bozenna
    Kaniak, Aneta
    di Rago, Jean-Paul
    Rytka, Joanna
    Powiązania:
    https://bibliotekanauki.pl/articles/1044047.pdf
    Data publikacji:
    2001
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    conditional lethality
    phosphotyrosyl phosphatase activator (PTPA)
    anaerobiosis
    Saccharomyces cerevisiae
    Opis:
    Saccharomyces cerevisiae homologues of phosphotyrosyl phosphatase activator(PTPA) are encoded by RRD1 and RRD2, genes whose combined deletion is synthetic lethal. Previously we have shown that the lethality of rrd1,2Δ can be suppressed by increasing the osmolarity of the medium. Here we show that the lethality of rrd1,2Δ is also suppressed under oxygen-limited conditions. The absence of respiration per se is not responsible for the suppression since elimination of the mitochondrial genome or a block in heme biosynthesis fail to rescue the rrd1,2Δ double mutation.
    Źródło:
    Acta Biochimica Polonica; 2001, 48, 4; 1043-1049
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hem12, an enzyme of heme biosynthesis pathway, is monoubiquitinated by Rsp5 ubiquitin ligase in yeast cells
    Autorzy:
    Chelstowska, Anna
    Jastrzebska, Zaneta
    Kaminska, Joanna
    Sadurska, Anna
    Plochocka, Danuta
    Rytka, Joanna
    Zoladek, Teresa
    Powiązania:
    https://bibliotekanauki.pl/articles/1038993.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Biochemiczne
    Tematy:
    yeast
    heme biosynthesis
    Hem12
    ubiquitination
    Rsp5 ligase
    protein degradation
    Opis:
    Heme biosynthesis pathway is conserved in yeast and humans and hem12 yeast mutants mimic porphyria cutanea tarda (PCT), a hereditary human disease caused by mutations in the UROD gene. Even though mutations in other genes also affect UROD activity and predispose to sporadic PCT, the regulation of UROD is unknown. Here, we used yeast as a model to study regulation of Hem12 by ubiquitination and involvement of Rsp5 ubiquitin ligase in this process. We found that Hem12 is monoubiquitinated in vivo by Rsp5. Hem12 contains three conserved lysine residues located on the protein surface that can potentially be ubiquitinated and lysine K8 is close to the 36-LPEY-39 (PY) motif which binds WW domains of the Rsp5 ligase. The hem12-K8A mutation results in a defect in cell growth on a glycerol medium at 38°C but it does not affect the level of Hem12. The hem12-L36A,P37A mutations which destroy the PY motif result in a more profound growth defect on both, glycerol and glucose-containing media. However, after several passages on the glucose medium, the hem12-L36A,P37A cells adapt to the growth medium owing to higher expression of hem12-L36A,P37A gene and higher stability of the mutant Hem12-L36A,P37A protein. The Hem12 protein is downregulated upon heat stress in a Rsp5-independent way. Thus, Rsp5-dependent Hem12 monoubiquitination is important for its functioning, but not required for its degradation. Since Rsp5 has homologs among the Nedd4 family of ubiquitin ligases in humans, a similar regulation by ubiquitination might be also important for functioning of the human UROD.
    Źródło:
    Acta Biochimica Polonica; 2015, 62, 3; 509-515
    0001-527X
    Pojawia się w:
    Acta Biochimica Polonica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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