SCOPe 2.03: Species: Human (Homo sapiens) [TaxId: 9606]

Root: SCOPe 2.03
Class a: All alpha proteins [46456] (284 folds)
Fold a.38: HLH-like [47458] (2 superfamilies)
4-helices; bundle, closed, left-handed twist; 2 crossover connections
Superfamily a.38.1: HLH, helix-loop-helix DNA-binding domain [47459] (1 family)
dimer of two identical helix-loop-helix subunits
Family a.38.1.1: HLH, helix-loop-helix DNA-binding domain [47460] (8 proteins)
Protein Usf B/HLH domain [47466] (1 species)
Species Human (Homo sapiens) [TaxId:9606] [47467] (1 PDB entry)

Domain(s) for 1an4:
1. Domain d1an4a_: 1an4 A: [17136]
  protein/DNA complex
2. Domain d1an4b_: 1an4 B: [17137]
  protein/DNA complex

Timeline for Species Human (Homo sapiens) [TaxId:9606] from a.38.1.1 Usf B/HLH domain:

Species Human (Homo sapiens) [TaxId:9606] from a.38.1.1 Usf B/HLH domain first appeared (with stable ids) in SCOP 1.55
Species Human (Homo sapiens) [TaxId:9606] from a.38.1.1 Usf B/HLH domain appears in SCOPe 2.02
Species Human (Homo sapiens) [TaxId:9606] from a.38.1.1 Usf B/HLH domain appears in SCOPe 2.04
Species Human (Homo sapiens) [TaxId:9606] from a.38.1.1 Usf B/HLH domain appears in the current release, SCOPe 2.08