Fold: Glutamate ligase domain

3 layers: a/b/a; mixed beta-sheet of 6 strands, order 126345; strand 1 is antiparallel to the rest

Lineage:

1. Root: scop
2. Class: Alpha and beta proteins (a/b)
   Mainly parallel beta sheets (beta-alpha-beta units)
3. Fold: Glutamate ligase domain
   3 layers: a/b/a; mixed beta-sheet of 6 strands, order 126345; strand 1 is antiparallel to the rest

Superfamilies:

1. Glutamate ligase domain (2)
   1. MurD/MurF C-terminal domain (2)
   2. Folylpolyglutamate synthetase, C-terminal domain (1)