TINP1 (TGF-beta inducible nuclear protein 1), also known as NSA2 (Nop seven-associated 2), is a highly conserved nucleolar protein essential for large ribosomal subunit biogenesis. NSA2 is broadly expressed in human tissues and cultured cell lines, and located in the nucleolus of the cell. It is thought to be involved in cell proliferation and cell cycle regulation.Synonyms: Hairy cell leukemia protein 1, Ribosome biogenesis protein NSA2 homolog, TGF-beta-inducible nuclear protein 1