This Pfam family represents a protein domain which shows homology to the yeast protein SacI Swiss:P32368. The SacI homology domain is most notably found at the amino terminal of the inositol 5'-phosphatase synaptojanin.

1: Synaptojanin 2, a novel synaptojanin isoform with a distinct targeting domain and expression pattern. Nemoto Y, Arribas M, Haffner C, DeCamilli P; J Biol Chem 1997;272:30817-30821. PMID:9388224