Although only a few rRNA molecules are present in each ribosome, these molecules make up about half of the ribosomal mass. The remaining mass consists of a number of proteins — nearly 60 in ...

A central tenet of biology has long held that each amino acid added to a peptide chain is specified by an RNA message as it threads its way through the ribosome. But Howard Hughes Medical Institute ...

Within a cell, DNA carries the genetic code for building proteins. To build proteins, the cell makes a copy of DNA, called mRNA. Then, another molecule called a ribosome reads the mRNA, translating it ...

Transcription initiation sites are locations ... That mRNA is read and translated at a cell's ribosome to create more proteins, important for the chemical and physical function of every organism.

This process of protein synthesis occurs in two stages - transcription and translation ... now ready to leave the nucleus and travel to the ribosome. After translation, the polypeptide is finally ...