NADH4 MLKIIIPTIMLMPLTWLSKKNMIWINTTTYSLLISLISLSLLNQPSNNSLNFSLMFFSDPLSAPLLVLTTWLLPLMLMASQHHLSKEPLIRKKLYITMLTMLQTFLIMTFTATELISFYILFEATLVPTLIIITRWGNQTERLNAGLYFLFYTLMGSLPLLVALISIQNLTGSLNFLLIQYWNQALPDSWSNIFLWLACMMAFMVKMPVYGLHLWLPKAHVEAPIAGSMVLAAILLKLGGYGMLRITTMLNPQTSFMAYPFLMLSLWGMIMTSSICLRQTDLKSLIAYSSVSHMALVIVAVLIQTPWSYMGATALMIAHGLTSSMLFCLANSNYERTHSRTMILARGLQTLLPLMAAWWLLASLTNLALPPSINLIGELFVVMSSFSWSNITIILMGANITITALYSLYMLITTQRGKYTHHINSIKPSFTRENALMALHMTPLLLLSLNPKIILGFTY Core subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I) that is believed to belong to the minimal assembly required for catalysis. Complex I functions in the transfer of electrons from NADH to the respiratory chain. The immediate electron acceptor for the enzyme is believed to be ubiquinone (By similarity). 459 ND4 MTND4 NU4M_HORSE NADH dehydrogenase subunit 4 NADH-ubiquinone oxidoreductase chain 4 MT-ND4