Fold: SRCR-like

unusual fold; disulphide-rich; core: beta-x-alpha-beta-loop-beta

Lineage:

1. Root: scop
2. Class: Alpha and beta proteins (a+b)
   Mainly antiparallel beta sheets (segregated alpha and beta regions)
3. Fold: SRCR-like
   unusual fold; disulphide-rich; core: beta-x-alpha-beta-loop-beta

Superfamilies:

1. Scavenger receptor cysteine-rich (SRCR) domain (1)
2. A heparin-binding domain (1)