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  • 1
    Electronic Resource
    Electronic Resource
    Use of an antibody to characterize and determine the role of the major Met-tRNA"f deacylase from rabbit reticulocyte ribosomes
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Gene Structure and Expression 867 (1986), S. 220-228 
    Details
    ISSN: 0167-4781
    Keywords: (Rabbit reticulocyte) ; Anti-deacylase antibody ; Methionine-tRNA"f deacylase ; Translational control
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0167-4781(86)90037-0
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  • 2
    Electronic Resource
    Electronic Resource
    Isolation and characterization of two forms of Met-tRNA"f deacylase from rabbit reticulocyte ribosomes
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Gene Structure and Expression 783 (1984), S. 80-88 
    Details
    ISSN: 0167-4781
    Keywords: (Rabbit reticulocyte) ; Met-tRNA deacylase ; Translational control
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0167-4781(84)90081-2
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  • 3
    Electronic Resource
    Electronic Resource
    Equilibration of methionine into the Met-tRNA pool of rabbit reticulocyte lysates - Additional evidence that deacylation of ribosomal subunit-bound Met-tRNA"f does occur in heme-deficiency
    Amsterdam : Elsevier
    FEBS Letters 160 (1983), S. 249-254 
    Details
    ISSN: 0014-5793
    Keywords: Deacylation ; Hemin ; Met-tRNA ; Protein synthesis ; Reticulocyte lysate ; Translational control
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0014-5793(83)80976-4
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  • 4
    Electronic Resource
    Electronic Resource
    Ribose administration during exercise: Effects on substrates and products of energy metabolism in healthy subjects and a patient with myoadenylate deaminase deficiency (1991)
    Springer
    Journal of molecular medicine 69 (1991), S. 151-155 
    Details
    ISSN: 1432-1440
    Keywords: Myoadenylate deaminase ; AMP-deaminase ; Deficiency ; Ribose ; Lactate ; Ammonia ; Hypoxanthine ; Muscle ; Metabolism
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Nine healthy men and a patient with myoadenylate deaminase deficiency were exercised on a bicycle ergometer (30 minutes, 125 Watts) with and without oral ribose administration at a dose of 2 g every 5 minutes of exercise. Plasma or serum levels of glucose, free fatty acids, lactate, ammonia and hypoxanthine and the urinary hypoxanthine excretion were determined. After 30 minutes of exercise without ribose intake the healthy subjects showed significant increases in plasma lactate (p〈0.05), ammonia (p〈0.01) and hypoxanthine (p〈0.05) concentrations and a decrease in serum glucose concentration (p〈0.05). When ribose was administered, the plasma lactate concentration increased significantly higher (p〈 0.05) and the increase in plasma hypoxanthine concentration was no longer significant. The patient showed the same pattern of changes in serum or plasma concentrations with exercise with the exception of hypoxanthine in plasma which increased higher when ribose was administered.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01665856
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  • 5
    Electronic Resource
    Electronic Resource
    Ergometer exercise in myoadenylate deaminase deficient patients (1993)
    Springer
    Journal of molecular medicine 71 (1993), S. 461-465 
    Details
    ISSN: 1432-1440
    Keywords: AMP deaminase ; Myoadenylate deaminase deficiency ; Muscular exercise ; Hypoxanthine ; Ammonia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Three patients with primary myoadenylate deaminase deficiency were subjected to exercise on a bicycle ergometer at 125 W for 30 minutes. Blood samples prior to, during, and at the end of exercise were analyzed for lactate, ammonia, and hypoxanthine. In addition, urinary hypoxanthine excretion was measured. In these patients the serum lactate level increased to concentrations between 7.9 and 9.0 mmol/1 at the end of exercise whereas the mean lactate level in nine control subjects at the end of exercise was 3.3 mmol/l (range 1.1–8.1 mmol/l). There was no difference to control subjects in the exercise-induced increase in plasma levels of ammonia and hypoxanthine or in the increase in urinary hypoxanthine excretion. The findings support the hypothesis of a reduced substrate supply to the citric acid cycle in myoadenylate deaminase deficiency. The normal formation of ammonia and hypoxanthine excludes a marked loss of adenine nucleotides in working muscles in these patients.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00180060
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  • 6
    Electronic Resource
    Electronic Resource
    FAB and tandem mass spectrometry for endorphin- and ACTH peptides of molecular weight to 2000 (1988)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 15 (1988), S. 649-657 
    Details
    ISSN: 0887-6134
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Four β-endorphins (β-endorphin 6-17, 2-17, 1-16, and 1-17) and two adrenocorticotropic hormone (ACTH) peptides (ACTH 1-10 and (1-16)-NH2) were studied by using fast atom bombardment coupled with tandem mass spectrometry. The capability to reproduce metastable ion and collisionally activated decomposition spectra on two different commercial sector mass spectrometers in two different laboratories was found to be acceptable (deviations in relative abundance are less than ± 50%). The endorphin peptides fragment metastably or upon collisional activation to give abundant B-series ions as well as Y-series ions, whereas Y-series ions are the principal ionic species produced upon the desorption by fast atom bombardment. The ACTH peptides also fragment to give Y-series ions, but of relatively low abundance compared to those from the endorphins. For both sets of peptides, high-energy collisionally activated decomposition and metastable ion decomposition daughter ion spectra are precise, structurally informative - even for peptides up to m/z 2000 - and complementary to spectra of daughter ions produced by desorption ionization alone.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200151203
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  • 7
    Electronic Resource
    Electronic Resource
    Fast atom bombardment and tandem mass spectrometry for structure determination: Remote site fragmentation of steroid conjugates and bile salts (1988)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 15 (1988), S. 89-98 
    Details
    ISSN: 0887-6134
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A series of 35 steroid conjugates (sulfates and glucuronides) and bile salts were investigated by using fast atom bombardment and tandem mass spectrometry. Collisional activation of the [M - H]- anions of sulfate conjugates and bile salts predominantly yields fragment ions arising by reactions occurring remote from the charge site. These reactions are sometimes sensitive to differences in stereochemistry at positions remote from the charge site and are useful for positional isomer differentiation. On the other hand, collisional activation of the [M - H]- anions of the glucouronide conjugates leads primarily to charge-driven fragementations.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/bms.1200150206
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  • 8
    Electronic Resource
    Electronic Resource
    Synthese von Hydroxyguanidinen aus Chlorformamidinen und OximenTeil der Dissertation M. Gross, Martin-Luther-Universität, Halle 1971. (1974)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 316 (1974), S. 434-442 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: N2-Aryl-N1,N1-dialkylchlorformamidine 1 reagieren mit Oximen über hydrolyseempfindliche Zwischenprodukte zu 2-Hydroxy-1-aryl-3,3-dialkylguanidinen 3.Diese Hydroxyguanidine bilden mit Benzoylchlorid O- und O,N-acylierte Verbindungen, mit Chlorameisensäureestern entstehen 3-Dialkylamino-4-aryl-5-oxo-Δ2-1,2,4-oxadiazoline 7. Die Reaktion mit Alkylhalogeniden führt zu 2-Alkoxy-1-aryl-3,3-dialkylguanidinen 8, und die katalytische Hydrierung liefert 1-Aryl-3,3-dialkylguanidine. Bei der Abspaltung der Oximinogruppe im saure Medium in Gegenwart von Oxydationsmitteln entstehen entsprechend substituierte Harnstoffe.
    Additional Material: 3 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19743160311
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  • 9
    Electronic Resource
    Electronic Resource
    Reactions of propene and cyclopropane radical cations with neutral ethylene (1993)
    Chichester : Wiley-Blackwell
    Biological Mass Spectrometry 28 (1993), S. 185-192 
    Details
    ISSN: 0030-493X
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The gas-phase reactions of propene and cyclopropane radical cations with neutral ethylene were investigated by using Fourier transform, chemical ionization and tandem mass spectrometries. Both reactions form covalent C5H10 adduct ions. The adduct ions are hypothesized to form initially as distonic radical cations that isomerize via a substituted cyclopropane intermediate and are detected as the most stable C5H10 isomer, the 2-methylbut-2-ene radical cation. The rate constant for each reaction is approximately 20% of the theoretical collision rate, indicating that product ions are formed in one out of every five collisions of the C3H6 radical cations with neutral C2H4.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/oms.1210280309
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  • 10
    Electronic Resource
    Electronic Resource
    Anodic oxidation of mercury in the presence of monocyclic ligands in propylene carbonate (1989)
    Weinheim : Wiley-Blackwell
    Electroanalysis 1 (1989), S. 493-499 
    Details
    ISSN: 1040-0397
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A series of 12 macrocycles containing 4, 6, or 8 N, S, and O heteroatoms (with increasing size from 14 to 24 atoms in the cycle) was studied to ascertain size and heteroatoms effects on the formation and 14 redox characteristics of their mercuric complexes. The concentration dependence of anodic currents at mercury electrodes in solutions of these ligands led to the determination of the formation constants of the complexes generated according to the folling of \documentclass{article}\pagestyle{empty}\begin{document}$$ {\rm Hg} \mathbin{\lower.3ex\hbox{$\buildrel\textstyle\rightarrow\over {\smash{\leftarrow}\vphantom{_{\vbox to.5ex{\vss}}}}$}} {\rm Hg}^{{\rm 2 + }} {\rm + 2e}^{\rm - } {\rm,}\,{\rm Hg}^{{\rm 2 + }} {\rm + jL} \mathbin{\lower.3ex\hbox{$\buildrel\textstyle\rightarrow\over {\smash{\leftarrow}\vphantom{_{\vbox to.5ex{\vss}}}}$}} {\rm (HgL}_{\rm j} {\rm)}^{{\rm 2 + }} $$\end{document} In propylene carbonate, the resulting mercuric complexes were stable (log Ks up to 40) mono- and dinuclear species. Their stability depends both on the nature of the heteroatoms and on the size of the macrocycle. For identical ligand sizes, the stability sequence N 〉 S 〉 O was established for mercuric complexes.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elan.1140010604
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