catalytic activity:3-sulfino-L-alanine = hypotaurine + CO(2).,cofactor:Pyridoxal phosphate.,pathway:Organosulfur biosynthesis; taurine biosynthesis; hypotaurine from L-cysteine: step 2/2.,similarity:Belongs to the group II decarboxylase family.,subunit:Homodimer.,
Expressed in liver and brain. Also expressed in both astrocytes and neurons, but lower levels are expressed in astrocytes.