Review Article
Role of RONS and eIFs in Cancer Progression
Table 1
Functions of different eIFs.
| Protein | Function | Refs. |
| eIF1 | mRNA screening and delivery of tRNA. | [23, 101] |
| eIF2 | Initiation codon recognition. | [27] | eIF2b | Allows for the next initiation to occur (returns the released GDP to GTP). |
| eIF3 | Recruiting translation factors and 40S ribosome subunits to the mRNA. | [23, 24, 102] |
| eIF4F | Multisubunit complex: | [24, 103] | (i) eIF4E | CAP binding activity, a rate-limiting factor. | (ii) eIF4G | Scaffolding protein and interaction partner for other factors. | (iii) eIF4A | RNA helicase. | (iv) eIF4B and eIF4H | mRNA secondary structure unwinding. |
| eLF5 | Translation elongation and bond formation. | [23] |
| eIF6 | Prevents 60S subunit association with 40S subunit in the absence of mRNA (antiassociation factor). | [25] |
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eIF: eukaryotic initiation factor; mRNA: messenger RNA; tRNA: tranfer RNA; GDP: glutamine dipeptide; GTP: glutamine tripeptide; CAP: catabolite activator protein.
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