Lineage for Family a.4.1.20: RpiR-like
- Root: SCOPe 2.02
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.4.1: Homeodomain-like [46689] (20 families) 
consists only of helices
Family a.4.1.20: RpiR-like [158263] (1 protein)
Pfam PF01418; contains two extra helices, one at each termini; overall arrangment of five helices is similar to the helical core of the lambda integrase-like catalytic domain (56350)
Protein:
Putative transcriptional regulator YbbH [158264] (1 species) Species Bacillus subtilis [TaxId:1423] [158265] (1 PDB entry)
Uniprot Q45581 1-83
More info for Family a.4.1.20: RpiR-like
Timeline for Family a.4.1.20: RpiR-like:
- Family a.4.1.20: RpiR-like first appeared in SCOP 1.75
- Family a.4.1.20: RpiR-like appears in SCOPe 2.01
- Family a.4.1.20: RpiR-like appears in SCOPe 2.03
- Family a.4.1.20: RpiR-like appears in the current release, SCOPe 2.08