Enables steroid 17-alpha-monooxygenase activity. Acts upstream of or within glucocorticoid biosynthetic process. Located in axon and neuronal cell body. Is expressed in several structures, including adrenal gland; gut; nervous system; reproductive system; and retina layer. Human ortholog(s) of this gene implicated in several diseases, including cholelithiasis; congenital adrenal hyperplasia; gallbladder cancer; osteoporosis; and prostate cancer. Orthologous to human CYP17A1 (cytochrome P450 family 17 subfamily A member 1). [provided by Alliance of Genome Resources, Apr 2022]