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What is the role of messenger RNA for the protein synthesis?

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morningmor3na | Student, College Freshman | eNotes Newbie

Posted September 14, 2011 at 12:00 AM via web

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What is the role of messenger RNA for the protein synthesis?

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pacorz | High School Teacher | (Level 3) Educator

Posted September 15, 2011 at 3:53 AM (Answer #1)

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Messenger RNA is a copy of the relevant section of DNA for the production of a specific protein. Messenger RNA, or mRNA, is made in the nucleus and is transported out through a nuclear pore into the cytoplasm.

Once the mRNA reaches the cytoplasm, ribosomes attach to it and begin the process of translation. In translation, the ribosomes "read" the bases along the mRNA, and each group of three bases is used to identify an amino acid which will become part of the protein. Transfer RNAs brings the called-for amino acids in sequence, and the ribosomes join them together into the polypeptide. When it is completed the polypeptide is released into the cytoplasm, after which other cell processes finish it into a protein. So to summarize, the role of messenger RNA is instructions for the sequencing of amino acids.

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mksb | Student | Salutatorian

Posted September 15, 2011 at 8:18 PM (Answer #2)

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Messenger RNA molecules are fed through the ribosomes during protein synthesis.

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