To understand how proteins are made, we have to divide thedecoding process into two steps. DNA only stores the geneticinformation, it isn't involved in the process by which theinformation is used. The first step in protein biosynthesistherefore has to involve transcribing the information inthe DNA structure into a useful form. In a separate step, thisinformation can be translated into a sequence of aminoacids.
The information required to build resides on the in the form of sequences of , and has the form of triplets of bases called "codons" following the . Once the genetic information describing how to build a is to , it has to be "translated" into the "language" of the protein. The sequence of on the RNA forms a code for the building blocks of the protein. The word "translation" seems particularly appropriate for this process since the information contained in the DNA is translated from the four-character alphabet of the bases to the twenty-character alphabet of the amino acids.
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