615128 | 496970 (3D|2D) unique referenced structure-organism pairs. 
 They consist of 
 224545 | 145772 (3D|2D) unique curated structures and 
 43648 unique organisms,
 originating from 
 32 initial open databases. 
 
 Among 2D structures, 
 80823 are present in only 1 organism, 
 47683 are present in between 1 and 10 organisms, 
 4158 are present in between 10 and 100 organisms, 
 417 are present in more than 100 organisms. 
 
 Among organisms, 
 7392 contain only 1 2D structure, 
 22380 contain between 1 and 10 2D structures, 
 11080 contain between 10 and 100 2D structures, 
 380 contain more than 100 2D structures.