Please explain in details how proteins synthesis occurs in y

Please explain in details how proteins synthesis occurs in yeast with respect to the nucleus.

I would like to learn how transcription starts in yeast nucleus and how it carries away from the nucleus to get translate in cytoplasm or ER.

Please use specific terms for yeast and tell me why yeast doesn\'t have regular ribosome and how protein synthesis occurs with respect to that also.

I would like to have a very long detailed explanation, I will write a very long review if I like your explanation.

Solution

Yeast is an eukaryotic cell ,follows same mechanism of translation as in advanced cell ie (1)Initiation (2)Activation (3)Elongation & (4)termination

In nucleus according to central dogma of molecular biology DNA converts into RNA through transcription ,which then comes out from nucleus through nuclear pore (complex structure having core complex) into cytoplasm and then RNA is converted into protein through translation (In stepwise manner ie initiation,activation,elongation and termination).

In transcription process three RNA polymerase are used to synthesize mRNA, rRNA &tRNA. Once mRNA is formed through transcription ,it then undergoes post transcriptional modification where introns are removed and exons are joined to form mature mRNA. This is then followed by translation.

Yeast generally has 80\'s type of ribosome.Saying it doesn\'t have regular ribosome make statement highly inadvertent since 80\'s ribosome are capable to synthesize polypeptide chain in yeast so the understanding need to be bit clear.