Analysis of carbonic anhydrase repertoire in calcareous sponges, their role in biomineralization, and their evolution.

The CA repertoire of the second subclass of calcareous sponge, the Calcinea, has not been investigated so far, leaving a considerable gap in our knowledge about this gene family in Calcarea. Here, using transcriptomic analysis, phylogenetics and in-situ hybridisation, we study the CA repertoire of additional species of calcareous sponges, including three from the previously unsampled subclass Calcinea.