es ▁( family ▁ 1 1 , ▁sub family ▁A , ▁pol ype pt ide ▁ 1 ). ▁The ▁gene ▁name ▁is ▁C Y P 1 1 A 1 . ▁ ▁N omen cl ature ▁▁ ▁The ▁system atic ▁name ▁of ▁this ▁en zym e ▁class ▁is ▁ch ol ester ol , ▁reduced - ad ren al - ferred ox in : ox y gen ▁ox id ored uct ase ▁( side - chain - cle aving ). ▁Other ▁names ▁include : ▁▁ ▁C 2 7 - side - chain ▁cle av age ▁en zym e ▁ ▁ch ol ester ol ▁ 2 0 - 2 2 - des m ol ase ▁ ▁ch ol ester ol ▁C 2 0 - 2 2 ▁des m ol ase ▁ ▁ch ol ester ol ▁des m ol ase ▁ ▁ch ol ester ol ▁side - chain ▁cle av age ▁en zym e ▁ ▁ch ol ester ol ▁side - chain - cle aving ▁en zym e ▁ ▁cy to chrome ▁P - 4 5 0 s cc ▁ ▁des m ol ase , ▁ster oid ▁ 2 0 - 2 2 ▁ ▁en zym es , ▁ch ol ester ol ▁side - chain - cle aving ▁ ▁ster oid ▁ 2 0 - 2 2 ▁des m ol ase ▁ ▁ster oid ▁ 2 0 - 2 2 - ly ase . ▁ ▁T issue ▁and ▁int rac ell ular ▁local ization ▁ ▁The ▁highest ▁level ▁of ▁the ▁ch ol ester ol ▁side - chain