EOG8CG2S0 GO:0008137 28/88 NADH dehydrogenase (ubiquinone) activity molecular_function "Catalysis of the reaction: NADH + H+ + ubiquinone = NAD+ + ubiquinol." [EC:1.6.5.3] EOG8CG2S0 GO:0005739 28/88 mitochondrion cellular_component "A semiautonomous, self replicating organelle that occurs in varying numbers, shapes, and sizes in the cytoplasm of virtually all eukaryotic cells. It is notably the site of tissue respiration." [GOC:giardia, ISBN:0198506732] EOG8CG2S0 GO:0004252 1/88 serine-type endopeptidase activity molecular_function "Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine)." [GOC:mah, http://merops.sanger.ac.uk/about/glossary.htm#CATTYPE, ISBN:0716720094]