Some of the RNAs that leave the nucleus are called messenger RNAs (mRNAs)*. mRNAs are copies of those sections of the DNA that code for large molecules called proteins*.
Proteins are extremely important. There are thousands of different types, each with a specific function. Many proteins help to control the chemical reactions that keep our cells alive and healthy. For example, proteins are needed to open up the DNA double helix and to join individual bases together into RNA strands during transcription. Other proteins are involved in digesting food, fighting infections, carrying oxygen around the body, and thousands of other diverse functions.
Hey, Pancreas Cell, my boss Gene needs you to make some more insulin!
6
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