Fold: Ubiquitin conjugating enzyme

alpha-beta(4)-alpha(3); core: meander beta-sheet plus one helix 2

Lineage:

1. Root: scop
2. Class: Alpha and beta proteins (a+b)
   Mainly antiparallel beta sheets (segregated alpha and beta regions)
3. Fold: Ubiquitin conjugating enzyme
   alpha-beta(4)-alpha(3); core: meander beta-sheet plus one helix 2

Superfamilies:

1. Ubiquitin conjugating enzyme (1)
   1. Ubiquitin conjugating enzyme (7)
      1. Ubiquitin conjugating enzyme
         1. Arabidopsis thaliana (1)
         2. Baker's yeast (Saccharomyces cerevisiae), ubc2 (RAD6) (1)
         3. Baker's yeast (Saccharomyces cerevisiae), ubc4 (1)
         4. Baker's yeast (Saccharomyces cerevisiae), ubc7 (1)
         5. Human (Homo sapiens), ubch7 (2)
         6. Human (Homo sapiens), ubc9 (3)
            identical sequence in many other species
         7. Clam (Spisula solidissima), E-2C (1)