molecular function |
| GO:0043024 | | ribosomal small subunit binding | | Interacting selectively and non-covalently with any part of the small ribosomal subunit. |
| GO:0003743 | | translation initiation factor activity | | Functions in the initiation of ribosome-mediated translation of mRNA into a polypeptide. |
| GO:0031369 | | translation initiation factor binding | | Interacting selectively and non-covalently with a translation initiation factor, any polypeptide factor involved in the initiation of ribosome-mediated translation. |
biological process |
| GO:0001731 | | formation of translation preinitiation complex | | The joining of the small ribosomal subunit, ternary complex, and mRNA. |
| GO:1990145 | | maintenance of translational fidelity | | Suppression of the occurrence of translational errors, such as codon-anticodon mis-paring, during the process of translation of a protein using an mRNA template. |
| GO:0006417 | | regulation of translation | | Any process that modulates the frequency, rate or extent of the chemical reactions and pathways resulting in the formation of proteins by the translation of mRNA or circRNA. |
| GO:0006412 | | translation | | The cellular metabolic process in which a protein is formed, using the sequence of a mature mRNA or circRNA molecule to specify the sequence of amino acids in a polypeptide chain. Translation is mediated by the ribosome, and begins with the formation of a ternary complex between aminoacylated initiator methionine tRNA, GTP, and initiation factor 2, which subsequently associates with the small subunit of the ribosome and an mRNA or circRNA. Translation ends with the release of a polypeptide chain from the ribosome. |
| GO:0006413 | | translational initiation | | The process preceding formation of the peptide bond between the first two amino acids of a protein. This includes the formation of a complex of the ribosome, mRNA or circRNA, and an initiation complex that contains the first aminoacyl-tRNA. |
cellular component |
| GO:0016282 | | eukaryotic 43S preinitiation complex | | A protein complex composed of the 40S ribosomal subunit plus eIF1A, eIF3, and eIF2-GTP-bound methionyl-initiator methionine tRNA. |
| GO:0043614 | | multi-eIF complex | | A multifactor complex composed of multiple translation initiation factors and the initiatior tRNAiMet, which is ready to bind to the small (40S) ribosome to form the 43S preinitiation complex. In S. cerevisiae, this complex is composed of eIF1, eIF2, eIF3, and eIF5. |