Library

feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Articles: DFG German National Licenses  (11)
  • 1995-1999  (6)
  • 1975-1979  (1)
  • 1970-1974  (4)
Source
  • Articles: DFG German National Licenses  (11)
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Analytical chemistry 46 (1974), S. 12-15 
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 2
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 22 (1974), S. 0 
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract— For the GABA shunt to operate in rivo, GABA must be able to enter brain mitochondria. GABA causes reduction of intra-mitochondrial NAD+; glutamate or 2-oxoglutarate stimulate this reduction at concentrations at which they do not themselves cause reduction. This stimulation is not abolished by Triton X-100. The rates of swelling of brain and liver mitochondria are similar in iso-osmotic GABA and in several analogues. The rate of swelling is proportional to the concentration of GABA in the iso-osmotic suspension medium. GABA penetrates 60% of the mitochondrial matrix volume, this value is unaffected by energizing the mitochondria. The activity of GABA-oxoglutarate aminotransferase is not latent. We conclude that GABA diffuses into both brain and liver mitochondria as a species with no net charge at rates which are able to sustain maximum activity of the GABA shunt.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Analytical chemistry 50 (1978), S. 1623-1627 
    ISSN: 1520-6882
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 4
    ISSN: 1574-6968
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Monatsschrift Kinderheilkunde 147 (1999), S. 754-755 
    ISSN: 1433-0474
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 6
    ISSN: 1432-041X
    Keywords: Key words Pigment pattern ; Fin ; Fish skeleton ; Tyrosinase ; Zebrafish
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Mutations causing a visible phenotype in the adult serve as valuable visible genetic markers in multicellular genetic model organisms such as Drosophila melanogaster, Caenorhabditis elegans and Arabidopsis thaliana. In a large scale screen for mutations affecting early development of the zebrafish, we identified a number of mutations that are homozygous viable or semiviable. Here we describe viable mutations which produce visible phenotypes in the adult fish. These predominantly affect the fins and pigmentation, but also the eyes and body length of the adult. A number of dominant mutations caused visible phenotypes in the adult fish. Mutations in three genes, long fin, another long fin and wanda affected fin formation in the adult. Four mutations were found to cause a dominant reduction of the overall body length in the adult. The adult pigment pattern was found to be changed by dominant mutations in wanda, asterix, obelix, leopard, salz and pfeffer. Among the recessive mutations producing visible phenotypes in the homozygous adult, a group of mutations that failed to produce melanin was assayed for tyrosinase activity. Mutations in sandy produced embryos that failed to express tyrosinase activity. These are potentially useful for using tyrosinase as a marker for the generation of transgenic lines of zebrafish.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Radiation and environmental biophysics 7 (1971), S. 146-151 
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Description / Table of Contents: Zusammenfassung Untersuchungen an thermischen Polymeren vonα-Aminosäuren in festem Zustand zeigen, daß in diesen insbesondere Tryptophan, Histidin, Cystin, Lysin und Methionin eine höhere Strahlenempfindlichkeit als in den bisher untersuchten Proteinen aufweisen. Diese Ergebnisse werden verglichen mit ähnlichen Untersuchungen an Filmen von Aminosäuremischungen, die in noch stärkerem Umfang auf einen beträchtlichen Energietransfer oder Chargetransfer in Richtung auf die vier genannten Aminosäuren schließen lassen. Die Ergebnisse werden auch in Hinsicht auf die Strahlenempfindlichkeit von Aminosäuren in Proteinen und auf die Inaktivierung von Enzymen diskutiert.
    Notes: Summary Irradiation of thermal polymers ofα-amino acids with X-rays in the solid state produces a significantly increased destruction of tryptophan, histidine, cystine, lysine and methionine as compared with the response of constituent amino acids in proteins. These results are discussed with respect to related results obtained by irradiation of dry films of amino acid mixtures which indicate an even stronger energy or charge transfer towards the four amino acids mentioned. The results are also discussed with respect to the radiation sensitivity of constituent amino acids in proteins and the inactivation of enzymes.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Radiation and environmental biophysics 7 (1971), S. 140-145 
    ISSN: 1432-2099
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Description / Table of Contents: Zusammenfassung Die Photosensibilität des Cystins und der aromatischenAminosäuren Tryptophan, Tyrosin and Phenylalanin in verschiedenen Proteinen, in wäßriger Lösung und in adsorbiertem Zustand wurde mit der Photoempfindlichkeit dieser Aminosäuren in thermischen Polymeren von Aminosäuren verglichen. In Abwesenheit von chromophoren Gruppen ist die Photosensibilität des Cystins weitgehend unabhängig von Aminosäurezusammensetzung, Primärstruktur oder Konformation des Polymeren. Die Wechselwirkung zwischen „Sensibilisator“ (meist aromatischen Aminosäuren) und Cystin ist nur konformationsabhängig, wenn Energie- oder Charge-Transferprozesse beteiligt sind. Die Wirkung der Photolyseprodukte des Tryptophans (solvatisierter Elektronen) scheint dagegen weitgehend unabhängig von der Konformation zu sein.
    Notes: Summary The photosensitivity of cystine and the aromatic amino acids tryptophan, tyrosine and phenylalanine in different proteins, in aqueous solution and in the adsorbed (solid) state is compared with the photosensitivity of these amino acids in thermal polymers ofα-amino acids. The photosensitivity of cystine in the absence of chromophoric groups is largely independent of the amino acid composition, primary structure, or conformation of the polymer. The interaction between the “sensitizer” (aromatic amino acid residues), and cystine, however, is largely dependent on the conformation of the polymer if energy or charge transfer is involved. The effects of tryptophan photolysis products (solvated electrons) appear to be largely independent of the conformational state.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Journal of inherited metabolic disease 22 (1999), S. 221-223 
    ISSN: 1573-2665
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Journal of inherited metabolic disease 18 (1995), S. 33-39 
    ISSN: 1573-2665
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Tetrahydrobiopterin (BH4) is the cofactor for the aromatic amino acid monoxygenase group of enzymes and for all known isoforms of nitric oxide synthase (NOS). Inborn errors of BH4 metabolism lead to hyperphenylalaninaemia and impaired catecholamine and serotonin turnover. The effects of BH4 deficiency on brain nitric oxide (NO) metabolism are not known. In this study we have used thehph-1 mouse, which displays GTP cyclohydrolase deficiency, to study the effects of BH4 deficiency on brain NOS. In the presence of exogenous BH4, NOS specific activity was virtually identical in the control andhph-1 preparations. However, omission of BH4 from the reaction buffer led to a significant 20% loss of activity in thehph-1 preparations only. TheK m for arginine was virtually identical for the control andhph-1 NOS when BH4 was present in the reaction buffer. In the absence of cofactor, theK m for arginine was 3-fold greater for control and 5-fold greater forhph-1 preparations. It is concluded that (a) BH4 does not regulate the intracellular concentration of brain NOS; (b) less binding of BH4 to NOS occurs in BH4 deficiency states; (c) BH4 has a potent effect on the affinity of NOS for arginine; and (d) the availability of arginine for NOS activity may become severely limiting in BH4 deficiency states. Since, in the presence of suboptimal concentrations of BH4 or arginine, NOS may additionally form oxygen free-radicals, it is postulated that in severe BH4 deficiency states NO formation is impaired and the central nervous system is subjected to increased oxidative stress.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...