Current holdings

This page gives statistics on the current holdings of this database. The last update was done in March 2020.

151837 PDB files

921 Large structures (>62 chain or >99,999 atoms) of them

505337 Protein chains

9003153 Secondary structure elements (SSEs)

10504673 3D contacts between SSEs of the same chain

Graph type Number of graphs Graphs containing beta-barrels Number of SSEs in graphs
Alpha 478477 0 4193575
Beta 478477 14904 3833407
Alpha-Beta 478477 14903 8026982
Alphalig 478477 0 5169746
Betalig 478477 14904 4809578
Alpha-Betalig 478477 14903 9003153

Number of SSEs in graphs





Number of SSEs by type





Number of contacts by type