See Also: initiation factors(medicine)
peptide initiation factors(medicine)
Herbal medicine (botanical medicine, herbology, phytomedicine)(health)
initiation(dictionary)
initiation(dictionary)
Initiation(medicine)
tumour initiation(medicine)
initiation complex(medicine)
Initiation tRNA(medicine)
initiation factor(medicine)

initiation factors (medicine)


initiation factors


The set of catalytic proteins required, in addition to mRNA and ribosomes, for protein synthesis to begin. In bacteria three distinct proteins have been identified: if 1 (8 kD), IF 2 (75 kD) and IF 3 (30 kD). at least 6-8 proteins have been identified in eukaryotes. IFs 1 and 2 enhance the binding of initiator tRNA to the initiation complex.