A nuclear protein is a protein found in the cell nucleus.[1] Proteins are transported inside the nucleus with the help of the nuclear pore complex, which acts a barrier between cytoplasm and nuclear membrane. The import and export of proteins through the nuclear pore complex plays a fundamental role in gene regulation and other biological functions.[2][3]
^Jühlen R, Fahrenkrog B (December 2018). "Moonlighting nuclear pore proteins: tissue-specific nucleoporin function in health and disease". Histochemistry and Cell Biology. 150 (6): 593–605. doi:10.1007/s00418-018-1748-8. PMID30361777. S2CID53030528.