Hypermetabolism Due to Uncoupled Mitochondrial Oxidative Phosphorylation 2, also known as humop2, is related to hypermetabolism due to uncoupled mitochondrial oxidative phosphorylation 1. An important gene associated with Hypermetabolism Due to Uncoupled Mitochondrial Oxidative Phosphorylation 2 is ATP5F1B (ATP Synthase F1 Subunit Beta). Affiliated tissues include thyroid, and related phenotypes are failure to thrive and hyperammonemia