EOG8M3CRQ GO:0005743 25/81 mitochondrial inner membrane cellular_component "The inner, i.e. lumen-facing, lipid bilayer of the mitochondrial envelope. It is highly folded to form cristae." [GOC:ai] EOG8M3CRQ GO:0006120 25/81 mitochondrial electron transport, NADH to ubiquinone biological_process "The transfer of electrons from NADH to ubiquinone that occurs during oxidative phosphorylation, mediated by the multisubunit enzyme known as complex I." [ISBN:0716731363] EOG8M3CRQ GO:0008137 25/81 NADH dehydrogenase (ubiquinone) activity molecular_function "Catalysis of the reaction: NADH + H+ + ubiquinone = NAD+ + ubiquinol." [EC:1.6.5.3] EOG8M3CRQ GO:0070469 20/81 respiratory chain cellular_component "The protein complexes that form the electron transport system (the respiratory chain), associated with a cell membrane, usually the plasma membrane (in prokaryotes) or the inner mitochondrial membrane (on eukaryotes). The respiratory chain complexes transfer electrons from an electron donor to an electron acceptor and are associated with a proton pump to create a transmembrane electrochemical gradient." [GOC:ecd, GOC:mah, ISBN:0198547684] EOG8M3CRQ GO:0016021 1/81 integral component of membrane cellular_component "The component of a membrane consisting of the gene products and protein complexes having at least some part of their peptide sequence embedded in the hydrophobic region of the membrane." [GOC:dos, GOC:go_curators] EOG8M3CRQ GO:0004930 1/81 G-protein coupled receptor activity molecular_function "Combining with an extracellular signal and transmitting the signal across the membrane by activating an associated G-protein; promotes the exchange of GDP for GTP on the alpha subunit of a heterotrimeric G-protein complex." [GOC:bf, http://www.iuphar-db.org, Wikipedia:GPCR]