SULT1A1（sulfotransferase family 1A member 1），癌症关联基因，基因ID：6817，硫转移酶催化许多激素、神经递质、药物和外源化合物的硫酸盐结合。这些胞浆酶在组织分布和底物特异性上都不同。家族成员间的基因结构（外显子的数目和长度）相似。该基因编码两种具有耐热酶活性的苯酚硫基转移酶之一。编码两个亚型的多个选择性剪接变体已经被鉴定为该基因。[由RefSeq提供，2008年7月]Sulfotransferase enzymes catalyze the sulfate conjugation of many hormones， neurotransmitters， drugs， and xenobiotic compounds. These cytosolic enzymes are different in their tissue distributions and substrate specificities. The gene structure (number and length of exons) is similar among family members. This gene encodes one of two phenol sulfotransferases with thermostable enzyme activity. Multiple alternatively spliced variants that encode two isoforms have been identified for this gene. [provided by RefSeq， Jul 2008]。