Source:http://linkedlifedata.com/resource/umls/id/C0525021
NCI: An amino acid sequence that directs the post-translational transport of a protein to the nucleus. The sequence contains positively charged amino acids such as arginine and lysine.,MSH: Short, predominantly basic amino acid sequences identified as nuclear import signals for some proteins. These sequences are believed to interact with specific receptors at the NUCLEAR PORE.