Nuclear pore

Definition

A nuclear pore is a protein-lined channel in the nuclear envelope that regulates the transportation of molecules between the nucleus and cytoplasm. It allows certain substances like RNA and proteins to move in and out while keeping others out.

Related terms

Nuclear Envelope:

The double-layered membrane that encloses the nucleus of a eukaryotic cell, providing a barrier between the nucleoplasm and the cytoplasm.

RNA (Ribonucleic Acid): A nucleic acid present in all living cells that acts as a messenger carrying instructions from DNA for controlling the synthesis of proteins.

Cytoplasm:

The thick solution that fills each cell and is enclosed by the cell membrane, composed of water, salts, and proteins