scholarly journals Cannabinoid Modulation of Eukaryotic Initiation Factors (eIF2α and eIF2B1) and Behavioral Cross-Sensitization to Cocaine in Adolescent Rats

Cell Reports ◽  
2018 ◽  
Vol 22 (11) ◽  
pp. 2909-2923 ◽  
Author(s):  
Philippe A. Melas ◽  
Johanna S. Qvist ◽  
Matteo Deidda ◽  
Chirag Upreti ◽  
Ya Bin Wei ◽  
...  
Keyword(s):  
Initiation Factors ◽  
Eukaryotic Initiation Factors ◽  
Adolescent Rats

scholarly journals RNA-stimulated ATPase activity of eukaryotic initiation factors.

1984 ◽  
Vol 259 (13) ◽  
pp. 8648-8654 ◽  
Author(s):  
J A Grifo ◽  
R D Abramson ◽  
C A Satler ◽  
W C Merrick
Keyword(s):  
Atpase Activity ◽  
Initiation Factors ◽  
Eukaryotic Initiation Factors

scholarly journals ATP-dependent unwinding of messenger RNA structure by eukaryotic initiation factors.

1985 ◽  
Vol 260 (12) ◽  
pp. 7651-7658 ◽  
Author(s):  
B K Ray ◽  
T G Lawson ◽  
J C Kramer ◽  
M H Cladaras ◽  
J A Grifo ◽  
...  
Keyword(s):  
Rna Structure ◽  
Messenger Rna ◽  
Initiation Factors ◽  
Eukaryotic Initiation Factors

scholarly journals Eukaryotic initiation factors and protein synthesis after resistance exercise in rats

2000 ◽  
Vol 88 (3) ◽  
pp. 1036-1042 ◽  
Author(s):  
Peter A. Farrell ◽  
Jazmir M. Hernandez ◽  
Mark J. Fedele ◽  
Thomas C. Vary ◽  
Scot R. Kimball ◽  
...  
Keyword(s):  
Protein Synthesis ◽  
Resistance Exercise ◽  
Translational Control ◽  
Sprague Dawley ◽  
Initiation Factors ◽  
Eukaryotic Initiation Factors ◽  
Sprague Dawley Rats ◽  
Arterial Plasma ◽  
Response To Exercise

Translational control of protein synthesis depends on numerous eukaryotic initiation factors (eIFs) and we have previously shown ( Am. J. Physiol. Endocrinol. Metab. 276: E721–E727, 1999) that increases in one factor, eIF2B, are associated with increases in rates of protein synthesis after resistance exercise in rats. In the present study we investigated whether the eIF4E family of initiation factors is also involved with an anabolic response to exercise. Male Sprague-Dawley rats either remained sedentary ( n = 6) or performed acute resistance exercise ( n = 6), and rates of protein synthesis were assessed in vivo 16 h after the last session of resistance exercise. eIF4E complexed to eIF4G (eIF4E ⋅ eIF4G), eIF4E binding protein 1 (4E-BP1) complexed to eIF4E, and phosphorylation state of eIF4E and 4E-BP1 (γ-form) were assessed in gastrocnemius. Rates of protein synthesis were higher in exercised rats compared with sedentary rats [205 ± 8 (SE) vs. 164 ± 5.5 nmol phenylalanine incorporated ⋅ g muscle−1 ⋅ h−1, respectively; P < 0.05]. Arterial plasma insulin concentrations were not different between the two groups. A trend ( P = 0.09) for an increase in eIF4E ⋅ eIF4G with exercise was noted; however, no statistically significant differences were observed in any of the components of the eIF4E family in response to resistance exercise. These new data, along with our previous report on eIF2B, suggest that the regulation of peptide chain initiation after exercise is more dependent on eIF2B than on the eIF4E system.

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