Literature DB >> 510501

Inhibition by tryptophan of nucleolar RNA synthesis in salivary gland nuclei of Chironomus thummi.

H N Gopalan, M Robert.   

Abstract

Tryptophan, but not glutamine and lysine, inhibits the incorporation of 3H-uridine into nucleoli of explanted salivary glands by about 60%. In isolated nuclei also, the nucleolar incorporation of 3H-uridine triphosphate is reduced to about 50% by tryptophan. It is concluded that tryptophan acts directly at the nuclear level and the possible mechanisms.

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Year:  1979        PMID： 510501     DOI： 10.1007/bf01962810

Source DB:  PubMed          Journal:  Experientia        ISSN： 0014-4754


  11 in total

1.  [CELL PHYSIOLOGICAL MECHANISMS IN THE REGULATION OF GENIC ACTIVITY IN THE GIANT CHROMOSOMES OF CHIRONOMUS THUMMI].

Authors:  H KROEGER
Journal:  Chromosoma       Date:  1964-04-01       Impact factor: 4.316

2.  Amino acid induced changes of puffing patterns in Chironomus salivary gland chromosomes.

Authors:  H N Gopalan
Journal:  Chromosoma       Date:  1973       Impact factor: 4.316

3.  Stimulation of ribosomal and DNA-like RNA synthesis by tryptophan.

Authors:  M Oravec; A Korner
Journal:  Biochim Biophys Acta       Date:  1971-10

4.  Regulation of the nucleolar DNA-dependent RNA polymerase by amino acids in Ehrlich ascites tumor cells.

Authors:  M T Franze-Fernández; A O Pogo
Journal:  Proc Natl Acad Sci U S A       Date:  1971-12       Impact factor: 11.205

5.  Enhanced DNA-dependent RNA polymerase and RNA synthesis in rat liver nuclei after administration of L-tryptophan.

Authors:  J Veselý
Journal:  Biochim Biophys Acta       Date:  1970-04-15

6.  Regulation of mammalian ribosome synthesis by amino acids.

Authors:  R Shields; A Korner
Journal:  Biochim Biophys Acta       Date:  1970-04-15

7.  Role of aromatic amino-acid residues in the binding of enzymes and proteins to nucleic acids.

Authors:  C Hélène
Journal:  Nat New Biol       Date:  1971-11-24

8.  [Interactions between amino acids and nucleic acids. 3. Study by absorption and nuclear magnetic resonance of the formation of complexes between tryptophan and the constituents of nucleic acids].

Authors:  J L Dimicoli; C Hélène
Journal:  Biochimie       Date:  1971       Impact factor: 4.079

9.  [Effect of ionic strength and pH on the differential decondensation of nucleoproteins in isolated salivary gland nuclei and chromosomes of Chironomus thummi].

Authors:  M Robert
Journal:  Chromosoma       Date:  1971       Impact factor: 4.316

10.  Permeability of a cell membrane junction. Dependence on energy metabolism.

Authors:  A L Politoff; S J Socolar; W R Loewenstein
Journal:  J Gen Physiol       Date:  1969-04       Impact factor: 4.086
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