@article{BergerEllersiekSteinmueller1991, author = {Berger, Susanne and Ellersiek, Ulrike and Steinm{\"u}ller, Klaus}, title = {Cyanobacteria contain a mitochrondrial complex I-homologous NADH-dehydrogenase}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-31223}, year = {1991}, abstract = {Thylakoid and cytoplasmic membranes of the cyanobacterium Syncchocystis sp. PCC 6803 were purified by sucrose gradient centrifugation. Both membranes oxidize NADH in a rotenone-sensitive reaction. Antibodies prepared against psbG/ndhKand ndhJ fusion proteins detect the corresponding polypeptides in both membrane preparations. This demonstrates that a NADH-dehydrogenase, homologous to the mitochondrial NADHubiquinone-oxidoreductase (complex I of the respiratory chain) is present in cyanobacteria, The NADH-dehydrogenase can be solubilized with the detergent /-D-dodecylmaltoside. Sedimentation analysis of the solubilized enzyme on a sucrose gradient indicates that it is a multisubunit protein complex.}, language = {en} } @article{BergerEllersiekKinzeltetal.1993, author = {Berger, Susanne and Ellersiek, Ulrike and Kinzelt, Dagmar and Steinm{\"u}ller, Klaus}, title = {Immunopurification of a subcomplex of the NAD(P)H-plastoquinone-oxidoreductase from the cyanobacterium Synechocystis sp. PCC6803}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:20-opus-31249}, year = {1993}, abstract = {An antibody against the NDH-K subunit of the NAD(P)H-dehydrogenase from the cyanobacterium Synechocystis sp. PCC6803 was used to isolate a subcomplex ofthe enzyme from Triton X-lOO solubilized total membranes by immunoaffinity chromatography. The isolated subcomplex consisted of seven major polypeptides with molecular masses of 43, 27, 24, 21, 18, 14 and 7 kDa. The amino-terminal amino acid sequences of the polypeptides were determined. By comparing the sequences with the amino acid sequences deduced from DNA. three proteins were identified as NDH-H (43 kDa). NDH-K (27 kDa) and NDH-J (24 kDa). A fourth subunit (NDH-J, 21 kDa) was identified by Western blot analysis with an NDH-J antibody.}, language = {en} }