Translation activator activity is a direct child of translation regulator, nucleic acid binding,
whereas the repressor activity is a direct child of translation regulator
I wonder if something can be an activator without binding the RNA. For example cbp7/8 / sls1/mtf2/ppr4/mrh5 in the model below
PMID: 34634819
@ValWood
Figure 12. Model of the cooperative interplay between ribosomal isoforms and translational activators to localize and coordinate synthesis and assembly
of OXPHOS subunits. Translational activators of cytb and cox1, Cbp7/8 and Mrh5/Ppr4/Mtf2/Sls1 respectively, could preferentially interact with either
Mug178 or Mrp51 ribosomes, the translated mRNA and the membrane, in order to localize Cytb and Cox1 synthesis into the sub-regions optimal for
subsequent assembly. Similarly, cox3 translation initiation would be favored on Mug178-containing SSU. Mrp51 ribosomes are proposed to synthesize
most of the other proteins, including a low amount of Cox3 protein, maybe through translation of the bi-cistronic cox1-cox3 mRNA. Small (SSU) and
large (LSU) ribosomal subunits have been indicated.
Translation activator activity is a direct child of translation regulator, nucleic acid binding, whereas the repressor activity is a direct child of translation regulator
I wonder if something can be an activator without binding the RNA. For example cbp7/8 / sls1/mtf2/ppr4/mrh5 in the model below PMID: 34634819
@ValWood
Figure 12. Model of the cooperative interplay between ribosomal isoforms and translational activators to localize and coordinate synthesis and assembly of OXPHOS subunits. Translational activators of cytb and cox1, Cbp7/8 and Mrh5/Ppr4/Mtf2/Sls1 respectively, could preferentially interact with either Mug178 or Mrp51 ribosomes, the translated mRNA and the membrane, in order to localize Cytb and Cox1 synthesis into the sub-regions optimal for subsequent assembly. Similarly, cox3 translation initiation would be favored on Mug178-containing SSU. Mrp51 ribosomes are proposed to synthesize most of the other proteins, including a low amount of Cox3 protein, maybe through translation of the bi-cistronic cox1-cox3 mRNA. Small (SSU) and large (LSU) ribosomal subunits have been indicated.