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  • 1
    Call number: SR 99.0044(100)
    In: Deutsche Geodätische Kommission bei der Bayerischen Akademie der Wissenschaften
    Type of Medium: Series available for loan
    Pages: 81 S.
    ISBN: 3769681827
    Series Statement: Deutsche Geodätische Kommission bei der Bayerischen Akademie der Wissenschaften : Reihe A, Theoretische Geodäsie 100
    Language: German
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 2
    ISSN: 1432-0983
    Keywords: Key wordsSaccharomyces cerevisiae ; Mitochondria ; Ribosomal protein
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The Saccharomyces cerevisiae open reading frame YDL202w has been characterised in the course of the EUROFAN yeast genome analysis program. Disruption of YDL202w causes a respiratory deficient phenotype accompanied by a loss of mitochondrial DNA. This phenotype is usually found in mutants defective in mitochondrial replication or gene expression. YDL202w has the potential to encode a soluble protein of 249 amino acids. It shows significant similarities to the ribosomal protein L10 from various bacteria and to a previously determined amino-terminal peptide sequence of the yeast mitochondrial ribosomal protein L11. The predicted amino-acid sequence of YDL202w starts with a stretch which has neither any correspondence in the bacterial sequences nor in the protein isolated from mitochondrial ribosomes. Furthermore, this stretch matches the requirements for a signal sequence for mitochondrial protein import. A mitochondrial location of the YDL202w gene product was proven by use of a carboxy terminally HA-tagged version. These findings clearly indicate that YDL202w encodes this mitochondrial ribosomal protein (YmL11).
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1433-4909
    Keywords: Key wordsNatronomonas pharaonis ; Natronobacteria ; Archaea ; Serine protease ; Chymotrypsinogen ; Evolution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A protease of a molecular mass of approximately 30 kDa was isolated and purified from the haloalkaliphilic archaeon Natronomonas (formerly Natronobacterium) pharaonis. The enzyme hydrolyzed synthetic peptides, preferentially at the carboxyl terminus of phenylalanine or leucine, as well as large proteins. Hydrolysis occurred over the range of pH from 6 to 12, with an optimum at pH 10. The temperature optimum was 61°C. The enzyme was nearly equally active over the range of salt concentration from 0.5 to 4 M (NaCl or KCl). A strong cross-reaction with a polyclonal antiserum against human chymotrypsin was observed. Enzymatic activity was inhibited by typical serine protease inhibitors. There was significant homology between N-terminal and internal sequences from autolytic fragments and the sequence of bovine chymotrypsinogen B; the overall amino acid composition was similar to that of vertebrate chymotrypsinogens. Evidence for a zymogen-like processing of the protease was obtained. Cell extracts from other halobacteria exhibited similar proteolytic activity and immunoreactivity. The data suggested a widespread distribution of a chymotrypsinogen B-like protease among halo- and haloalkaliphilic Archaea.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 114 (1983), S. 267-272 
    ISSN: 1434-4475
    Keywords: Nitrate group ; Crystal chemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die geometrische Analyse sorgfältig verfeinerter Kristallstrukturen anorganischer Nitrate zeigt, daß schwache Aplanaritäten dieser Gruppe — d. h. solche mit einem Abstandd des Stickstoffs von der Ebene der drei Sauerstoffe bisd ∼ 0,02 Å — keineswegs seltene Ausnahmen sind. Viel größere Aplanaritäten wurden zwar beschrieben oder ergeben sich aus den veröffentlichten Strukturdaten; alle Beispiele mitd〉0,05 Å scheinen jedoch einer Bestätigung zu bedürfen.
    Notes: Abstract Geometric analysis of carefully refined inorganic nitrate crystal structures shows that weak aplanarities of the NO3-group, i.e. with a distanced of the nitrogen atom from the plane defined by the three oxygen atoms up tod∼0.02 Å, are by no means rare exceptions. Much larger aplanarities have been reported to occur in some crystal structures or follow from the published structure data, but all examples withd〉0.05 Å seem to need confirmation.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Protoplasma 50 (1959), S. 277-289 
    ISSN: 1615-6102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Zusammenfassung Untersuchungen der Gleitbewegung von verschiedenen niederen Organismen führten zu der Auffassung, daß die Bewegung keine Schleim-Stemmwirkung ist, wie beiClosterium, sondern auf einer Parallelverschiebung des ausgeschiedenen Schleims zur Zelloberfläche beruht. Die Fähigkeit zur Parallelverschiebung wird als Eigenschaft der Protoplasma-Fibrillen augesehen. Auch verschiedene andere Argumente weisen darauf hin, daß die Gleitbewegung als besondere Form der Protoplasmabewegung aufgefaßt werden muß.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Protoplasma 65 (1968), S. 251-254 
    ISSN: 1615-6102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Protoplasma 77 (1973), S. 481-481 
    ISSN: 1615-6102
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Plant systematics and evolution 111 (1964), S. 143-148 
    ISSN: 1615-6110
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Zusammenfassung Die Entstehung einer „Zopf“-Bildung bei einerOscillatoria wird beschrieben und auf Torsionsspannung zurückgeführt. Mit Hilfe von schraubenmechanischen Vorstellungen lassen sich Torsionsspannung und Gleitbewegung verstehen.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Plant systematics and evolution 114 (1967), S. 255-306 
    ISSN: 1615-6110
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Summary The movements of bacteria living in the mud of high-moores have been investigated with maximum magnification and daik-field illumination, partly in indian-ink preparations. Detailed observations of the flagellar movements of rod-shaped bacteria, of the gliding movements ofSaprospira, Cristispira, Spirulina, Cytophaga, Chlamydobacteria, and of various motions of Spirochaeta have been possible. It can been shown with the help of model-experiments that most phenomena of motion are to be explained not by the contraction of fibrils but by simple rotations of helices. The situation and behaviour of the rotating helices are described of the main types of movements and the different problems of the mechanism of the particular movements are discussed.
    Notes: Zusammenfassung Die Bewegungen der im Schlamm der Hochmoore lebenden Bakterien wurden mit stärkster Vergrößerung im Dunkelfeld und zum Teil im Tuschepräparat untersucht. Detailierte Beobachtungen waren möglich über die Geißelbewegungen von Stäbchenbakterien, die Gleitbewegungen vonSaprospira, Cristispira, Spirulina, Cytophaga, Chlamydobakterien und die verschiedenen Bewegungsweisen einiger Spirochäten. Mit Hilfe von Modellversuchen wird gezeigt, da\ die meisten Bewegungsphänomene nicht durch Fibrillenkontraktionen, sondern durch einfache Schraubenrotationen erklärbar sind. Lage und Verhalten der rotierenden Schrauben werden für die Haupttypen der Bewegung angegeben und verschiedene Probleme der Bewegungsmechanik besprochen.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Plant systematics and evolution 111 (1964), S. 173-184 
    ISSN: 1615-6110
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Zusammenfassung Der hier beschriebenen schraubenmechanischen Theorie der Texturbildung liegt folgende Überlegung zugrunde: Wenn die Mikrofibrillen der Zellwand parallel zu einer fädigen Protoplasma-Struktur gebildet werden (Abb. 1a), müssen sie beim schraubigen Verlauf dieser Struktur einen von der Schrauben-Steigung abhängigen Winkel zur Schraubenachse einnehmen (Abb. 1c). Durch Verschiedenheiten in der Orientierung und Proportion der submikroskopischen Schrauben des Protoplasmas, sowie durch periodische Änderungen ihres Windungssinnes, läßt sich das Aussehen der verschiedensten Texturen verständlich machen.
    Type of Medium: Electronic Resource
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