Superfamily: Polynucleotide phosporylase/guanosine pentaphospate synthase (PNPase/GPSI), domain 3

Lineage:

1. Root: scop
2. Class: All alpha proteins
3. Fold: DNA/RNA-binding 3-helical bundle
   core: 3-helices; bundle, closed or partly opened, right-handed twist; up-and down
4. Superfamily: Polynucleotide phosporylase/guanosine pentaphospate synthase (PNPase/GPSI), domain 3

Families:

1. Polynucleotide phosporylase/guanosine pentaphospate synthase (PNPase/GPSI), domain 3 (1)
   1. Polynucleotide phosporylase/guanosine pentaphospate synthase (PNPase/GPSI), domain 3
      links two duplicated two-domain units formed by domains 1-2 and 4-5
      1. Streptomyces antibioticus (2)
         1. 1e3h
            complexed with mse, so4
            1. region a:263-345
         2. 1e3p
            complexed with so4, wo4
            1. region a:263-345