Initiation factor: Difference between revisions

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Revision as of 07:05, 4 December 2017

Initiation factors are proteins that enhance the binding affinity of the various translational components.

Types of Initiation factors in E. coli

IF1

IF2

IF3

Role of Initiation factors

IF1 - Stabilizes 30S subunit

IF2 - Binds f-met-tRNA to 30S-mRNA complex ;  binds to GTP and stimulates hydrolysis

IF3 - Binds 30S subunit to mRNA ; dissociates monosomes into subunits following termination


References

1. William S. Klug, Michael R. Cummings, Charlotte Spencer, Michael Palladino (2014). Concepts of Genetics Tenth Edition