Polyamines and protein synthesis. IV. Stimulation of aminoacyl transfer RNA formation by polyamines

1969 ◽  
Vol 37 (6) ◽  
pp. 917-924 ◽  
Author(s):  
Yoshifumi Takeda ◽  
Kazuei Igarashi
Author(s):  
Kazuei Igarashi ◽  
Kazuyoshi Matsuzaki ◽  
Yoshifumi Takeda

Author(s):  
Kazuyoshi Matsuzaki ◽  
Yoshifumi Takeda

1979 ◽  
Vol 64 (2) ◽  
pp. 289-292 ◽  
Author(s):  
Autar K. Mattoo ◽  
James D. Anderson ◽  
Edo Chalutz ◽  
Morris Lieberman

Author(s):  
Kazuei Igarashi ◽  
Kazuyoshi Matsuzaki ◽  
Yoshifumi Takeda

1974 ◽  
Vol 77 (1) ◽  
pp. 64-70 ◽  
Author(s):  
Gustav Wägar

ABSTRACT Whether the short-term regulation of thyroidal protein synthesis by TSH occurs at the transcriptional or the translational level was tested by measuring the effect of actinomycin D (act D) on the TSH-induced stimulation of L-14C-leucine incorporation into the thyroidal proteins of rats. TSH was injected 6 h before the rats were killed. The thyroid glands were then removed and incubated in vitro in the presence of L-14C-leucine for 2 h. The pronounced stimulation of leucine incorporation in the TSH-treated animals was depressed as compared with controls but still significant even when the animals had been pre-treated with 100 μg act D 24 and 7 h before sacrifice. On the other hand, act D strongly decreased incorporation of 3H-uridine into RNA. Short-term regulation of thyroidal protein synthesis by TSH appears to be partly but not wholly dependent on neosynthesis of RNA. Hence regulation may partly occur at the translation level of protein synthesis.


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