Protein: NADH dehydrogenase [ubiquinone] 1 beta subcomplex subunit 4 (Complex I-B15) (CI-B15) (NADH-ubiquinone oxidoreductase B15 subunit) (O95168)
Organism: Homo sapiens (Human)
Function: Accessory subunit of the mitochondrial membrane respiratory chain NADH dehydrogenase (Complex I), that is believed not to be involved in 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.
Subcellular location: Mitochondrion inner membrane {ECO:0000305|PubMed:12611891}; Single-pass membrane protein {ECO:0000255}; Matrix side {ECO:0000305}.
Sequence: MSFPKYKPSSLRTLPETLDPAEYNISPETRRAQAERLAIRAQLKREYLLQYNDPNRRGLIENPALLRWAYARTINVYPNFRPTPKNSLMGALCGFGPLIFIYYIIKTERDRKEKLIQEGKLDRTFHLSY
InterPro domains: - IPR009866: NADH:ubiquinone oxidoreductase, subunit NDUFB4 (family) [1-128]
Interaction partners: - NADH-ubiquinone oxidoreductase chain 4
- NADH dehydrogenase 1 beta subcomplex subunit 5, mitochondrial
- NADH dehydrogenase 1 alpha subcomplex subunit 13
- NADH dehydrogenase 1 subunit C2
- NADH dehydrogenase 1 beta subcomplex subunit 3
- Acyl carrier protein, mitochondrial
- NADH-ubiquinone oxidoreductase 75 kDa subunit, mitochondrial
- NADH dehydrogenase flavoprotein 2, mitochondrial
- NADH dehydrogenase 1 subunit C1, mitochondrial
- NADH-ubiquinone oxidoreductase chain 5
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0005515 (protein binding)
Biological Process (BP): GO:0008150 (biological process), GO:0008152 (metabolic process), GO:0009987 (cellular process), GO:0044237 (cellular metabolic process), GO:0006091 (generation of precursor metabolites and energy), GO:0015980 (energy derivation by oxidation of organic compounds), GO:0022900 (electron transport chain), GO:0045333 (cellular respiration), GO:0022904 (respiratory electron transport chain), GO:0019646 (aerobic electron transport chain), GO:0009060 (aerobic respiration), GO:0042773 (ATP synthesis coupled electron transport), GO:0006120 (mitochondrial electron transport, NADH to ubiquinone), GO:0042775 (mitochondrial ATP synthesis coupled electron transport), GO:0006119 (oxidative phosphorylation)
Cellular Component (CC): GO:0005575 (cellular component), GO:0032991 (protein-containing complex), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0098798 (mitochondrial protein-containing complex), GO:0016020 (membrane), GO:0070469 (respirasome), GO:0098796 (membrane protein complex), GO:1990351 (transporter complex), GO:0031975 (envelope), GO:1902494 (catalytic complex), GO:0005737 (cytoplasm), GO:0031974 (membrane-enclosed lumen), GO:0005654 (nucleoplasm), GO:0031090 (organelle membrane), GO:0031967 (organelle envelope), GO:0005746 (mitochondrial respirasome), GO:0098803 (respiratory chain complex), GO:0043229 (intracellular organelle), GO:0098800 (inner mitochondrial membrane protein complex), GO:0005739 (mitochondrion), GO:0043233 (organelle lumen), GO:1902495 (transmembrane transporter complex), GO:1990204 (oxidoreductase complex), GO:0030964 (NADH dehydrogenase complex), GO:0043227 (membrane-bounded organelle), GO:0005740 (mitochondrial envelope), GO:0045271 (respiratory chain complex I), GO:0043231 (intracellular membrane-bounded organelle), GO:0005747 (mitochondrial respiratory chain complex I), GO:0019866 (organelle inner membrane), GO:0070013 (intracellular organelle lumen), GO:0031966 (mitochondrial membrane), GO:0005743 (mitochondrial inner membrane), GO:0005634 (nucleus), GO:0031981 (nuclear lumen)