Lineage for Family c.6.3.1: PHP domain

1. Root: SCOP 1.69

2. Class c: Alpha and beta proteins (a/b) [51349] (136 folds)

3. Fold c.6: 7-stranded beta/alpha barrel [51988] (3 superfamilies) variant of beta/alpha barrel; parallel beta-sheet barrel, closed, n=7, S=8; strand order 1234567; some members may have fewer strands

4. Superfamily c.6.3: PHP domain-like [89550] (2 families)

5. Family c.6.3.1: PHP domain [89551] (1 protein) putative phosphoesterase domain; contains trinuclear metal-binding site; some similarity to the metallohydrolases of TIM-barrel fold