IMPa is an immunomodulator metalloprotease that belongs to the peptidase M60 family Pfam:PF13402. This entry represents the helical domain found at the N-terminal of the Ig domain [1].

1: Recognition of protein-linked glycans as a determinant of peptidase activity. Noach I, Ficko-Blean E, Pluvinage B, Stuart C, Jenkins ML, Brochu D, Buenbrazo N, Wakarchuk W, Burke JE, Gilbert M, Boraston AB; Proc Natl Acad Sci U S A. 2017;114:E679. PMID:28096352