Inhibition of dihydrocozymase-oxidase activity of heart-muscle preparations and of certain cell-free bacterial preparations by 2-heptyl-4-hydroxyquinoline N-oxide.

Selective inhibition by 2-heptyl-4-hydroxyquinoline N-oxide of certain oxidation-reduction reactions.

The NADH dehydrogenase of the respiratory chain of Escherichia coli. I. Properties of the membrane-bound enzyme, its solubilization, and purification to near homogeneity.

The NADH dehydrogenase of the Escherichia coli respiratory chain has been identified by the following properties: (a) its location in membrane vesicles; (b) its inhibition by AMP in a fashion similar to that of the NADH oxidase; (c) its specificity for NADH, but not NADPH, with the same Km for NADH as that of the NADH oxidase; (d) its sensitivity when membrane-bound to inhibition by dicoumarol,...

INFLUENCE OF ENDO THELIUM REMOVAL AND LNAME ON RESPONSES OF RAT COMMON CAROTID ARTERY TO α-ADRENOCEPTOR AGONISTS

In this study we investigated the effects of endothelium removal and L-NAME on responses to α-adrenoceptor agonists. Male Wistar rats were killed by overdose with pentobarbitone sodium, after which the left and right common carotid arteries were removed. Rings of arteries 3-4 mm in length were cut from each vessel and then mounted in 10 mL isolated organ bath, bathed in Krebs maintained at ...

The NADH Dehydrogenase of the Respiratory Chain of Escherichia coli

The NADH dehydrogenase of the Escherichiu coli respiratory chain has been identified by the following properties: (a) its location in membrane vesicles; (b) its inhibition by AMP in a fashion similar to that of the NADH oxidase; (c) its specificity for NADH, but not NADPH, with the same K, for NADH as that of the NADH oxidase; (d) its sensitivity when membrane-bound to inhibition by dicoumarol,...

Nature of the specificity of alcohol coupling to L-alanine transport into isolated membrane vesicles of a marine pseudomonad.

Ethanol stimulated the uptake of l-alanine into isolated membrane vesicles of a marine pseudomonad at a rate and to an extent comparable with that obtained with reduced nicotinamide adenine dinucleotide (NADH) or the artificial electron donor ascorbate-N, N, N', N'-tetramethyl-p-phenylenediamine (ascorbate-TMPD). Methanol and branched-chain alcohols had little or no capacity to energize transpo...