Class d: Alpha and beta proteins (a+b) [53931] (396 folds) |
Fold d.96: T-fold [55619] (2 superfamilies) beta(2)-alpha(2)-beta(2); 2 layers: alpha/beta; antiparallel sheet 1234 tunnel-shaped: its known members form wide oligomeric barrels different sizes |
d.96.1: Tetrahydrobiopterin biosynthesis enzymes-like [55620] (5 families) bind purine or pterin in topologically similar sites between subunits |
d.96.2: ApbE-like [143631] (2 families) duplication: contains two differently decorated beta(2)-alpha(2)-beta(2) subdomains, similar to other T-fold domains; probably does not form the tunnel-shaped oligomers |
Timeline for Fold d.96: T-fold: