TCDB is operated by the Saier Lab Bioinformatics Group

MusI (MusI) Superfamily

The MusI superfamily includes 8 families, all listed under TC# 9.B.28. These proteins usually have 5, 6 or 7 TMSs, but their functions are unknown although postulated. MusI homologues may be auxiliary proteins of ABC systems. The MusI superfamily may include TC family 9.A.22, but this has not been proven.

9.A.22 - The Putative Bacillus Transporter or Unknown Function (BTUF) Family
9.B.28 - The Putative Essential Component of the MusEFGKI ABC Transporter, MusI (MusI) Family