Protein:protein complexes in plant and bacterial electron transfer systems

The following study is composed of two main parts. Both are concerned with soluble electron transfer proteins but from two diverse systems. The first part involves the elucidation of the initial steps of methylamine metabolism in the Gram-negative bacterium Paracoccus denitrificans. Oxidation-reduction properties and protein-protein interactions for the soluble constituents are reported. The second part concerns several ferredoxindependent enzymes from spinach. The interaction between ferredoxin and ferredoxin-NADP+ oxidoreductase (FNR); ferredoxin-hioredoxin oxidoreductase (FTR) and ferredoxin-nitrite oxidoreductase (nitrite reductase) is studied.