Fold: Nitrile hydratase alpha chain

4 layers a/b/b/a; inside is a sandwich of two 2-stranded beta-sheets

Lineage:

1. Root: scop
2. Class: Alpha and beta proteins (a+b)
   Mainly antiparallel beta sheets (segregated alpha and beta regions)
3. Fold: Nitrile hydratase alpha chain
   4 layers a/b/b/a; inside is a sandwich of two 2-stranded beta-sheets

Superfamilies:

1. Nitrile hydratase alpha chain (1)
   duplication: contains two structural repeats
   1. Nitrile hydratase alpha chain (1)
      1. Nitrile hydratase alpha chain
         1. Rhodococcus erythropolis (2)
            also Rhodococcus sp. R312
            1. 2ahj
               complexed with cea, csd, dio, fe, no, so4, zn
               1. chain a
               2. chain c
            2. 1ahj
               complexed with fe
               1. chain a
               2. chain c
               3. chain e
               4. chain g