Sulfotransferase that utilizes 3'-phospho-5'-adenylyl sulfate (PAPS) as sulfonate donor to catalyze the stereospecific sulfate conjugation of 24-epibrassinosteroids. Preferred substrates are 24-epicathasterone and 6-deoxo-24-epicathasterone. Low activity with 22-deoxy-24-epiteasterone. No activity with 24-epimers catasterone and brassinolide. Sulfonates salicylic acid. May be involved in detoxification. Enhances plant response to pathogen infection and contributes to long distance signaling in systemic acquired resistance (SAR). Dimer. Expressed in the aerial parts of seedlings, in roots, leaves and flowers. Not detected in stems and siliques. Up-regulated by pathogens, methyljasmonate, salicylic acid, salt, osmotic stress, cold, auxin, cytokinin and abscisic acid treatments. Not induced by desiccation and ethylene treatment. Hypersensitivity to NaCl and ABA in seed germination, and to salicylic acid (SA) in seedling growth. Belongs to the sulfotransferase 1 family. Extended N-terminus.