Protein Synthesis
Signal peptide protein removal that is translocated across a membrane is accomplished by

chymotrypsin
signal peptidase
trypsin
fMet aminopeptidase

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Protein Synthesis
The first step in translation is

binding of tRNA to the small ribosomal subunit
binding of mRNA to the small ribosomal subunit
binding of mRNA to the two ribosomal subunits
binding of the two ribosomal subunits to each other

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