TCDB is operated by the Saier Lab Bioinformatics Group

9.B.301.  The Uncharacterized Archaeal and Bacterial 4-6 TMS Protein (UABP) Family 

These protein have about 370 - 410 aas and 4 - 6 TMSs. They may be homologous to ubiquitin ligases, for example as found in TC Family 8.A.112.