Catalyzes the conversion of carbon disulfide into hydrogen sulfide and carbon dioxide, with carbonyl sulfide as an intermediate. Likely plays a key role in sulfur metabolism in S.solfataricus. Does not show carbonic anhydrase activity (hydration of CO(2) to carbonate). carbon disulfide + 2 H2O = CO2 + 2 H(+) + 2 hydrogen sulfide Binds 1 zinc ion per subunit. Sulfur metabolism; hydrogen sulfide biosynthesis. Forms a hexadecameric catenane homooligomer, through interactions of two interlocked octameric rings. Belongs to the beta-class carbonic anhydrase family.