translation Flashcards

1
Q

where is the ribosome binding site located?

A

in the 5’ UTR

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2
Q

tRNA structure

A

3 stem loops, single stranded region (AA attaches), anticodon on loop 2

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3
Q

how are tRNAs charged?

A

enzyme amino-acyl tRNA synthetases

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4
Q

where are ribosomal subunits made?

A

nucleus

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5
Q

where are ribosomal subunits assembled?

A

cytoplasm

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6
Q

where is the exit site of the polypeptide

A

50S subunit

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7
Q

what is necessary for initiation?

A

initiation factors and energy supply from GTP

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8
Q

initiation differences in eukaryotes

A

instead of RBS there is guanosine cap that promotes binding of mRNA and subunit, start codon variable distance from RBS, start tRNA is methionine instead of formyl methionine in bacteria

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9
Q

what is the peptidyl transfer reaction?

A

polypeptide in the P site is transferred to AA in A site by peptidyl transferase

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10
Q

what are stop codons recognized by?

A

release factors

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