preferred_name: Intermediate I binds second heme, UQCRB, UQCRQ (Homo sapiens)
preferred_name_lc: intermediate i binds second heme, uqcrb, uqcrq (homo sapiens)
label: Intermediate I binds second heme, UQCRB, UQCRQ (Homo sapiens)
label_lc: intermediate i binds second heme, uqcrb, uqcrq (homo sapiens)