AOX1B (alternative oxidase 1B); alternative oxidase. Identical to Alternative oxidase 1b, mitochondrial precursor (AOX1B) [Arabidopsis Thaliana] (GB:O23913;GB:Q4PSN3); similar to AOX1C (alternative oxidase 1C), alternative oxidase [Arabidopsis thaliana] (TAIR:AT3G27620.1); similar to alternative oxidase [Populus tremula x Populus tremuloides] (GB:CAB64356.1); similar to mitochondrial alternative oxidase [Nicotiana attenuata] (GB:AAR37364.1); contains InterPro domain Alternative oxidase; (InterPro:IPR002680)