_EC 2.2.-.- Transferring aldehyde or ketonic groups. 284 PDB entries  
EC 2.-.-.- Transferases. [47,965 PDB entries]
EC 2.2.-.- Transferring aldehyde or ketonic groups. [284 PDB entries]
EC 2.2.1.- Transketolases and transaldolases. [284 PDB entries]