SCOP 1.67: Superfamily a.43.1: Ribbon-helix-helix

Lineage for Superfamily a.43.1: Ribbon-helix-helix

1. Root: SCOP 1.67

2. Class a: All alpha proteins [46456] (202 folds)

3. Fold a.43: Ribbon-helix-helix [47597] (1 superfamily)
   core: 4 helices; array of 2 hairpins, opened

4. Superfamily a.43.1: Ribbon-helix-helix [47598] (4 families)
   formerly Met repressor-like; dimeric proteins; the N-termini form a small beta-sheet ribbon

Families:

1. a.43.1.1: Arc/Mnt-like phage repressors [47599] (2 proteins)

2. a.43.1.3: CopG-like [100970] (3 proteins)
   similar to the phage repressor family

3. a.43.1.4: Omega transcriptional repressor [100971] (1 protein)
   plasmid-encoded, similar to the phage repressor family

4. a.43.1.5: Met repressor, MetJ (MetR) [100972] (1 protein)

More info for Superfamily a.43.1: Ribbon-helix-helix

Timeline for Superfamily a.43.1: Ribbon-helix-helix:

• Superfamily a.43.1: Ribbon-helix-helix first appeared (with stable ids) in SCOP 1.55, called Superfamily a.43.1: Met repressor-like
  
• Superfamily a.43.1: Ribbon-helix-helix was called Superfamily a.43.1: Met repressor-like in SCOP 1.65
  
• Superfamily a.43.1: Ribbon-helix-helix appears in SCOP 1.69
  
• Superfamily a.43.1: Ribbon-helix-helix appears in the current release, SCOPe 2.08