cak:Caul_1750 K00957 sulfate adenylyltransferase subunit 2 [EC:2.7.7.4] | (GenBank) sulfate adenylyltransferase, small subunit cak:Caul_1749 K00955 bifunctional enzyme CysN/CysC [EC:2.7.7.4 2.7.1.25] | (GenBank) sulfate adenylyltransferase, large subunit