Class a: All alpha proteins [46456] (284 folds) |
Fold a.4: DNA/RNA-binding 3-helical bundle [46688] (14 superfamilies) core: 3-helices; bundle, closed or partly opened, right-handed twist; up-and down |
Superfamily a.4.6: C-terminal effector domain of the bipartite response regulators [46894] (3 families) binds to DNA and RNA polymerase; the N-terminal, receiver domain belongs to the CheY family |
a.4.6.1: PhoB-like [46895] (5 proteins) contains 4-stranded meander beta-sheet in the N-terminal extension |
a.4.6.2: GerE-like (LuxR/UhpA family of transcriptional regulators) [46900] (5 proteins) contains additional, fourth helix in the C-terminal extension |
a.4.6.3: Spo0A [46903] (1 protein) elaborated with additional helices |
Timeline for Superfamily a.4.6: C-terminal effector domain of the bipartite response regulators: