mRNA translation unit, TEM

mRNA translation unit, TEM

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Credit: DR ELENA KISELEVA/SCIENCE PHOTO LIBRARY

Caption: Translation unit from a salivary gland cell of a midge (Chironomus sp.), coloured transmission electron micrograph (TEM). Translation is the synthesis of proteins from a messenger ribonucleic acid (RNA) strand. mRNA consists of groups of 3 nucleotide bases that code for different amino acids, the building blocks of proteins. Ribosomes (yellow) attach to the mRNA strand and read its code. A transfer RNA (tRNA) molecule carrying an amino acid corresponding to the code attaches to the ribosome. When the tRNA dissociates it leaves the amino acid, and the ribosome moves onto the next bases. As the ribosome moves down the mRNA strand a protein grows from the ribosome.

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Keywords: amino acid, biological, biology, cell, chironomus sp., coloured, cytoplasm, eukaryote, eukaryotic, genetics, messenger ribonucleic acid, midge, molecular, molecule, mrna, protein, proteins, ribosomal, ribosome, ribosomes, rna, strand, strands, synthesis, synthesising, tem, transfer ribonucleic acid, translating, translation, transmission electron micrograph, transmission electron microscope, trna, unit

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