What is the product, chromosome and porphyria related to the enzymes which take effect at the location 'Cytosol'?
SELECT product ,  chromosome ,  porphyria FROM enzyme WHERE LOCATION  =  'Cytosol'
enzymes taking effect at a specific location refers to WHERE LOCATION = 'Cytosol'; product, chromosome, and porphyria related to these enzymes refers to SELECT product, chromosome, porphyria FROM enzyme;