Lineage for Fold a.26: 4-helical cytokines
- Root: SCOP 1.69
Class a: All alpha proteins [46456] (218 folds) 
Fold a.26: 4-helical cytokines [47265] (1 superfamily)
core: 4 helices; bundle, closed; left-handed twist; 2 crossover connections
Superfamily:
a.26.1: 4-helical cytokines [47266] (3 families) 
there are two different topoisomers of this fold with different entanglements of the two crossover connections
More info for Fold a.26: 4-helical cytokines
Timeline for Fold a.26: 4-helical cytokines:
- Fold a.26: 4-helical cytokines first appeared (with stable ids) in SCOP 1.55
- Fold a.26: 4-helical cytokines appears in SCOP 1.67
- Fold a.26: 4-helical cytokines appears in SCOP 1.71
- Fold a.26: 4-helical cytokines appears in the current release, SCOPe 2.08