What are the functions of nuclear pores?

Nuclear pores are large complexes of proteins that are found in the nuclear membrane that encloses the nucleoplasm. Their main function is to allow molecules such as RNA and proteins to freely pass into or out of the nucleus from the cytoplasm. Nuclear pores also allow enzymes for DNA and RNA synthesis to pass into the nucleus from the cytoplasm while allowing mRNA, and tRNA to pass out of the nucleus into the cytoplasm.