Initiation factor distribution in Xenopus laevis eggs

The distribution of activity similar to that of one of the initiation factors (IF2) was determined as a function of developmental stage in Xenopus laeviseggs and embryos. In vivo exposure of mature oocytes to hormone increases the total amount of detectable factor activity and facilitates the binding of IF2-like factor to ribosomes. The quality of factor bound is not correlated with polysome content.