SCOP 1.67: Domain d1an4b_: 1an4 B:

Lineage for d1an4b_ (1an4 B:)

1. Root: SCOP 1.67

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

3. Fold a.38: HLH-like [47458] (2 superfamilies)
   4-helices; bundle, closed, left-handed twist; 2 crossover connections

4. Superfamily a.38.1: HLH, helix-loop-helix DNA-binding domain [47459] (1 family)
   dimer of two identical helix-loop-helix subunits

5. Family a.38.1.1: HLH, helix-loop-helix DNA-binding domain [47460] (8 proteins)

6. Protein Usf B/HLH domain [47466] (1 species)

7. Species Human (Homo sapiens) [TaxId:9606] [47467] (1 PDB entry)

8. Domain d1an4b_: 1an4 B: [17137]
   protein/DNA complex; mutant

Details for d1an4b_

PDB Entry: 1an4, 2.9 Å

PDB Description: structure and function of the b/hlh/z domain of usf

SCOP Domain Sequences for d1an4b_:

Sequence; same for both SEQRES and ATOM records:

>d1an4b_ a.38.1.1 (B:) Usf B/HLH domain {Human (Homo sapiens)}
mdekrraqhneverrrrdkinnwivqlskiipdssmestksgqskggilskasdyiqelr
qsnhr

Timeline for d1an4b_:

• d1an4b_ first appeared (with stable ids) in SCOP 1.55
  
• d1an4b_ appears in SCOP 1.65
  
• d1an4b_ appears in SCOP 1.69
  
• d1an4b_ appears in the current release, SCOPe 2.08, called d1an4b1