Protein Synthesis Miss Richardson SBI4U.

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Protein Synthesis Miss Richardson SBI4U

Gene expression the transfer of genetic information from DNA to RNA to protein The Central Dogma

RNA There are three types of RNA in protein sythesis: messenger RNA (mRNA) Single-stranded copy of original DNA strand Carries code for more than one gene transfer RNA (tRNA) Single-stranded Acceptor stem attaches to amino acid Anticodon loop contains complement of mRNA codon ribosomal RNA (rRNA) Single-stranded made of 2 subunits that make a functional ribosome ‘Reads’ the mRNA and assembles proteins RNA

RNA

Protein Synthesis Protein Synthesis involves two stages: Transcription – mRNA is synthesized from DNA template Translation – protein is synthesized from mRNA template Protein Synthesis