Family: RNA polymerase sigma subunit

Lineage:

1. Root: scop
2. Class: All alpha proteins [46456]
3. Fold: RNA polymerase sigma subunit [48328]
4. Superfamily: RNA polymerase sigma subunit [48329]
5. Family: RNA polymerase sigma subunit [48330]

Protein Domains:

1. sigma70 subunit fragments [48331]
   1. Escherichia coli [48332] (1)
   2. Thermus thermophilus [74766] (2)
2. Sigma factor SigA fragments [74767]
   1. Thermus aquaticus [74768] (5)
3. SigmaF fragment [74769]
   1. Bacillus stearothermophilus [74770] (1)
4. Sigma factor SigR fragment [81883]
   1. Streptomyces coelicolor a3(2) [81884] (2)