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There are several enzymes involved in amino acid biosynthesis. These some of thse enzymes are encoded in the human genome. You can check out KEGG for a detailed pathway in different organisms. The green arrows denote reactions (and enzymes) that are present in a given organism (Homo sapiens, in this case). If you click on the arrows you can know the ...


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I think you are almost right. DNA (in the nucleus) is transcribed to mRNA, and protein synthesis occurs on ribosomes where the the sequence of bases in the mRNA is translated into protein. Ribosomes are located in the cytoplasm or attached to the endoplasmic reticulum. (The 'mRNA story' is well told in Who discovered mRNA?) But there is also another type of ...


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