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  • 1
    Digitale Medien
    Digitale Medien
    Isolation and characteristics of yeasts able to grow at low concentrations of nutrients (1998)
    New York, NY [u.a.] : Wiley-Blackwell
    Yeast 14 (1998), S. 233-238 
    Details
    ISSN: 0749-503X
    Schlagwort(e): Oligotrophic yeasts ; low-nutrient conditions ; starvation ; Cryptococcaceae ; Life and Medical Sciences ; Genetics
    Quelle: Wiley InterScience Backfile Collection 1832-2000
    Thema: Biologie
    Notizen: Seven oligotrophic yeasts, which can grow in a 104-fold dilution of malt-yeast-glucose-peptone medium (10-4 YM), were mainly isolated from soil. These yeasts belong to the Cryptococcaceae. When inoculated at about 102 cells/ml in 10-4 YM, the isolates grew to 1·4×103-2·4×105 cells/ml after 3 days. Some culture collection yeasts fell into three groups according to their growth characteristics in 10-4 YM, one group showing characteristics of the oligotrophic yeasts. The half-saturation values of uptake by the five isolated oligotrophic yeasts for D-glucose, L-leucine and L-amino acids were 6·0-25·0, 1·7-43·3 and 3·5-21·6 μM, respectively. The oligotrophic yeasts suspended in 10 mM-phosphate buffer (pH 6·0) had high tolerances for starvation, and remained more than 15% viable after 90 days of starvation. © 1998 John Wiley & Sons, Ltd.
    Zusätzliches Material: 3 Ill.
    Materialart: Digitale Medien
    Standort Signatur Erwartet Verfügbarkeit
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    Artikel (Nationallizenzen)
  • 2
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    Unbekannt
    daf-2, an insulin receptor-like gene that regulates longevity and diapause in Caenorhabditis elegans (1997)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1997-08-15
    Beschreibung: A C. elegans neurosecretory signaling system regulates whether animals enter the reproductive life cycle or arrest development at the long-lived dauer diapause stage. daf-2, a key gene in the genetic pathway that mediates this endocrine signaling, encodes an insulin receptor family member. Decreases in DAF-2 signaling induce metabolic and developmental changes, as in mammalian metabolic control by the insulin receptor. Decreased DAF-2 signaling also causes an increase in life-span. Life-span regulation by insulin-like metabolic control is analogous to mammalian longevity enhancement induced by caloric restriction, suggesting a general link between metabolism, diapause, and longevity.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kimura, K D -- Tissenbaum, H A -- Liu, Y -- Ruvkun, G -- R01AG14161/AG/NIA NIH HHS/ -- New York, N.Y. -- Science. 1997 Aug 15;277(5328):942-6.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Molecular Biology, Massachusetts General Hospital, Boston, MA 02114, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9252323" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adipose Tissue/metabolism ; Amino Acid Sequence ; Animals ; Caenorhabditis elegans/chemistry/*genetics/growth & development/metabolism ; Caenorhabditis elegans Proteins ; Chromosome Mapping ; Conserved Sequence ; Energy Intake ; *Genes, Helminth ; Glucose/metabolism ; Humans ; Insulin/metabolism ; Larva/genetics/growth & development/metabolism ; Longevity/*genetics ; Molecular Sequence Data ; Mutation ; Phosphatidylinositol 3-Kinases ; Phosphatidylinositol Phosphates/metabolism ; Phosphorylation ; Phosphotransferases (Alcohol Group Acceptor)/metabolism ; Receptor, IGF Type 1/chemistry/genetics ; Receptor, Insulin/chemistry/*genetics/metabolism ; Signal Transduction
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
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    Unbekannt
    Phosphorylation and activation of 13S condensin by Cdc2 in vitro (1998)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1998-10-17
    Beschreibung: 13S condensin is a multisubunit protein complex essential for mitotic chromosome condensation in Xenopus egg extracts. Purified 13S condensin introduces positive supercoils into DNA in the presence of topoisomerase I and adenosine triphosphate in vitro. The supercoiling activity of 13Scondensin was regulated by mitosis-specific phosphorylation. Immunodepletion, in vitro phosphorylation, and peptide-mapping experiments indicated that Cdc2 is likely to be the kinase that phosphorylates and activates 13S condensin. Multiple Cdc2 phosphorylation sites are clustered in the carboxyl-terminal domain of the XCAP-D2 (Xenopus chromosome-associated polypeptide D2) subunit. These results suggest that phosphorylation of 13Scondensin by Cdc2 may trigger mitotic chromosome condensation in vitro.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kimura, K -- Hirano, M -- Kobayashi, R -- Hirano, T -- CA45508/CA/NCI NIH HHS/ -- GM53926/GM/NIGMS NIH HHS/ -- New York, N.Y. -- Science. 1998 Oct 16;282(5388):487-90.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Cold Spring Harbor Laboratory, Post Office Box 100, 1 Bungtown Road, Cold Spring Harbor, NY 11724, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/9774278" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): Adenosine Triphosphatases/chemistry/*metabolism ; Amino Acid Sequence ; Animals ; CDC2 Protein Kinase/*metabolism ; Chromosomes/chemistry/*metabolism ; DNA, Circular/chemistry/metabolism ; DNA, Superhelical/*chemistry ; DNA-Binding Proteins/chemistry/*metabolism ; Enzyme Activation ; Interphase ; *Mitosis ; Molecular Sequence Data ; Multiprotein Complexes ; Nucleic Acid Conformation ; Peptide Mapping ; Phosphorylation ; Xenopus
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
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    Unbekannt
    Regulation of myosin phosphatase by Rho and Rho-associated kinase (Rho-kinase) (1996)
    American Association for the Advancement of Science (AAAS)
    Details
    Publikationsdatum: 1996-07-12
    Beschreibung: The small guanosine triphosphatase Rho is implicated in myosin light chain (MLC) phosphorylation, which results in contraction of smooth muscle and interaction of actin and myosin in nonmuscle cells. The guanosine triphosphate (GTP)-bound, active form of RhoA (GTP.RhoA) specifically interacted with the myosin-binding subunit (MBS) of myosin phosphatase, which regulates the extent of phosphorylation of MLC. Rho-associated kinase (Rho-kinase), which is activated by GTP.RhoA, phosphorylated MBS and consequently inactivated myosin phosphatase. Overexpression of RhoA or activated RhoA in NIH 3T3 cells increased phosphorylation of MBS and MLC. Thus, Rho appears to inhibit myosin phosphatase through the action of Rho-kinase.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kimura, K -- Ito, M -- Amano, M -- Chihara, K -- Fukata, Y -- Nakafuku, M -- Yamamori, B -- Feng, J -- Nakano, T -- Okawa, K -- Iwamatsu, A -- Kaibuchi, K -- New York, N.Y. -- Science. 1996 Jul 12;273(5272):245-8.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Division of Signal Transduction, Nara Institute of Science and Technology, Ikoma 630-01, Japan.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/8662509" target="_blank"〉PubMed〈/a〉
    Schlagwort(e): 3T3 Cells ; Actins/metabolism ; Amino Acid Sequence ; Animals ; Cattle ; GTP Phosphohydrolases/*metabolism ; GTP-Binding Proteins/*metabolism ; Intracellular Signaling Peptides and Proteins ; Isopropyl Thiogalactoside/pharmacology ; Mice ; Molecular Sequence Data ; Muscle Contraction ; Muscle, Smooth/physiology ; Myosin Light Chains/metabolism ; Myosin-Light-Chain Phosphatase ; Oxazoles/pharmacology ; Phosphoprotein Phosphatases/*antagonists & inhibitors/metabolism ; Phosphorylation ; Protein-Serine-Threonine Kinases/*metabolism ; rho-Associated Kinases ; rhoA GTP-Binding Protein
    Print ISSN: 0036-8075
    Digitale ISSN: 1095-9203
    Thema: Biologie , Chemie und Pharmazie , Informatik , Medizin , Allgemeine Naturwissenschaft , Physik
    Publiziert von American Association for the Advancement of Science (AAAS)
    Standort Signatur Erwartet Verfügbarkeit
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