at ph greater than 7 the absorption and magnetic circular dichroic spectra of cobalt carboxypeptidase a are insensitive to anions [ latt , s. a. , & vallee , b. l. ( 1971 ) biochemistry 10 , 4263-4270 ] , but at ph less than 6 chloride and other anions perturb them in a manner specific for each anion .
C0008203
chloride
C0003075
anion