Family: Fumarate reductase respiratory complex transmembrane subunits

Lineage:

1. Root: scop
2. Class: Membrane and cell surface proteins and peptides
   Does not include proteins in the immune system
3. Fold: Membrane all-alpha
4. Superfamily: Membrane all-alpha
   this is not a true superfamily family; in this provisional classification each transmembrane helix is considered to be a 'domain'
5. Family: Fumarate reductase respiratory complex transmembrane subunits

Protein Domains:

1. Fumarate reductase respiratory complex transmembrane subunits
   1. Escherichia coli (1)
   2. Wolinella succinogenes (2)