Protein Synthesis
Type I proteins (plasma membrane) have a

multiple signal sequence that doubles as the membrane anchoring sequence
cleavaged N- terminal signal sequence that doubles as the membrane anchoring sequence
multiple signal sequence and a hydrophobic stop transfer sequence
cleavage N- terminal signal sequence and a hydrophobic stop transfer sequence

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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 the two ribosomal subunits to each other
binding of mRNA to the two ribosomal subunits

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