Lineage for Fold c.6: 7-stranded beta/alpha barrel
- Root: SCOP 1.65
Class c: Alpha and beta proteins (a/b) [51349] (121 folds) 
Fold c.6: 7-stranded beta/alpha barrel [51988] (3 superfamilies)
variant of beta/alpha barrel; parallel beta-sheet barrel, closed, n=7, S=8; strand order 1234567; some members may have fewer strands
Superfamilies:
c.6.1: Cellulases [51989] (1 family) 
c.6.2: Glycoside hydrolase/deacetylase [88713] (3 families)
in the different families beta-barrels are similarly distorted but may vary in the number of strands
c.6.3: PHP domain [89550] (1 family)
contains trinuclear metal-binding site; some similarity to the metallohydrolases of TIM-barrel fold
More info for Fold c.6: 7-stranded beta/alpha barrel
Timeline for Fold c.6: 7-stranded beta/alpha barrel:
- Fold c.6: 7-stranded beta/alpha barrel first appeared (with stable ids) in SCOP 1.55, called Fold c.6: Cellulases
- Fold c.6: 7-stranded beta/alpha barrel was called Fold c.6: Cellulases in SCOP 1.63
- Fold c.6: 7-stranded beta/alpha barrel appears in SCOP 1.67
- Fold c.6: 7-stranded beta/alpha barrel appears in the current release, SCOPe 2.08