Prokaryotic Initiation Factor-2

Synonyms

IF2 Protein

Initiation Factor 2

Initiation Factor-2

Initiation Factor-2, Prokaryotic

Peptide Initiation Factor 2

Peptide Initiation Factor IF 2

Peptide Initiation Factor IF-2

Prokaryotic Initiation Factor 2

Translational Initiation Factor 2

infB Gene Product

infB Protein

The largest of the three prokaryotic initiation factors with a molecular size of approximately 80 kD. It functions in the transcription initiation process by promoting the binding of formylmethionine-tRNA to the P-site of the 30S ribosome and by preventing the incorrect binding of elongator tRNA to the translation initiation site.