Anaerobic dehydrogenase

an enzyme (usually a pyridinoenzyme) that catalyzes the transfer of hydrogen from some metabolite to some acceptor molecule (e.g., NAD+, cytochrome) other than dioxygen; e.g., lactate dehydrogenases, isocitrate dehydrogenases, and others in EC class 1, excluding those listed under aerobic dehydrogenase.