NCIt definition : Serpin B5 (375 aa, 42 kDa) is encoded by the human SERPINB5 gene. This protein plays
a role in the regulation of cell movement and in tumor suppression.;
NCIt note : Maspin is a member of the Serpin protein family. Unlike other members of the family,
Maspin exhibits no protease inhibitory activity (see J Biol Chem. 2002 Dec 6;277(49):46845-8.
Epub 2002 Oct 15), but it plays a role in cell-matrix adhesion, tumor invasion, and
metastasis. High maspin expression appears to oppose lymph node metastasis. Higher
expression is associated with better survival rates and may be a favorable prognostic
marker. (from SWISS-PROT, OMIM);