ICA Protein, a potent inhibitor of carbonic anhydrase 2 (CA2), intricately regulates enzymatic activity within a finely tuned network. Functionally, ICA, a non-iron-binding monomer, exhibits specificity in inhibiting CA2. Its transferrin-like domain 2 engages in molecular interactions, underscoring ICAs regulatory role. This positions ICA as a key player, adding nuance to the precise mechanisms governing carbonic anhydrase activity. ICA Protein, Mouse (HEK293, His) is the recombinant mouse-derived ICA protein, expressed by HEK293 , with C-His labeled tag.