پاسخ : نمونه سوالات زیست شناسی سلولی و مولکولی
اینم یه سوال نسبتا ساده
The vast majority of mitochondrial proteins are imported through the outer
membrane by the multi subunit protein translocators known as TOM complexes.
Since the number of TOM complexes in yeast mitochondria is known
( 1 0 pmole/mg of mitochondrial protein) , it is possible to calculate whether
a co-translational mechanism could account for the bulk of mitochondrial
protein import. If mitochondrial proteins were all imported co-translationally,
then 1 0 pmol of TOM complexes would need to import 1 mg of protein
each generation. Given that mitochondria double every 3 hours and that the
rate of protein synthesis is 3 amino acids per second (which is therefore the
maximum rate of import through a single TOM complex) , how many mg of
mitochondrial protein could 1 0 pmol of TOM complexes import in one generation?
(On average an amino acid has a mass of 1 1 0 daltons.)