Fold: L9 N-domain-like

beta(2)-alpha-beta-alpha; 3 layers: alpha/beta/alpha

Lineage:

1. Root: scop
2. Class: Alpha and beta proteins (a+b)
   Mainly antiparallel beta sheets (segregated alpha and beta regions)
3. Fold: L9 N-domain-like
   beta(2)-alpha-beta-alpha; 3 layers: alpha/beta/alpha

Superfamilies:

1. L9 N-domain-like (2)
   1. Ribosomal protein L9 N-domain (1)
   2. N-terminal domain of RNase HI (1)