The active site architecture of Pisum sativum beta-carbonic anhydrase is a mirror image of that of alpha-carbonic anhydrases.
Kimber, M.S., Pai, E.F.(2000) EMBO J 19: 1407-1418
- PubMed: 10747009 
- DOI: 10.1093/emboj/19.7.1407
- Primary Citation of Related Structures:  
1EKJ - PubMed Abstract: 
We have determined the structure of the beta-carbonic anhydrase from the dicotyledonous plant Pisum sativum at 1.93 A resolution, using a combination of multiple anomalous scattering off the active site zinc ion and non-crystallographic symmetry averagin ...