| pubmed-article:5829 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:5829 | lifeskim:mentions | umls-concept:C2244433 | lld:lifeskim |
| pubmed-article:5829 | lifeskim:mentions | umls-concept:C0056961 | lld:lifeskim |
| pubmed-article:5829 | lifeskim:mentions | umls-concept:C1145662 | lld:lifeskim |
| pubmed-article:5829 | lifeskim:mentions | umls-concept:C0486805 | lld:lifeskim |
| pubmed-article:5829 | pubmed:issue | 1-2 | lld:pubmed |
| pubmed-article:5829 | pubmed:dateCreated | 1976-8-2 | lld:pubmed |
| pubmed-article:5829 | pubmed:abstractText | Photosystem I fragments were prepared by digitonin treatment of spinach chloroplasts. The midpoint potential of cytochrome b6 in the fragments is close to 0V, showing a one electron transition. No cytochrome b559 was detectable, neither in difference absorption spectra nor in light-induced absorbance changes. In the absence of added cofactors only cytochrome b6 photoreduction can be observed. This photoreduction is stimulated by ferredoxin. Ferredoxin-NADP+ reductase appears not to be involved in cytochrome b6 reduction. Photooxidation of cytochrome b6 is dependent on plastocyanin addition and inhibited by DBMIB, a plastoquinone antagonist. Addition of plastocyanin restores cytochrome f photooxidation as well, reacting quite specifically in about equimolar concentrations to bound cytochrome f. The stimulation of cytochrome f oxidation is abolished by an antibody prepared against plastocyanin, indicating a surface location of plastocyanin in digitonin treated membranes. Biphasic kinetics of dark-reduction of cytochrome f by ascorbate indicate that part of this cytochrome f is relatively inaccessible in the membrane. After preillumination a monophasic reduction is observed and the slowly oxidized component is absent. Illumination in the presence of plastocyanin causes a fast and complete reduction of cytochrome f, suggesting equilibration of cytochrome f with added plastocyanin, residing in the membrane surface. It appears that actinic light causes conformation and/or structural changes in the membrane of these digitonin fragments, influencing cytochrome f asseccibility. | lld:pubmed |
| pubmed-article:5829 | pubmed:language | eng | lld:pubmed |
| pubmed-article:5829 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:5829 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:5829 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:5829 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:5829 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:5829 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:5829 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:5829 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:5829 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:5829 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:5829 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:5829 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:5829 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:5829 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:5829 | pubmed:issn | 0341-0382 | lld:pubmed |
| pubmed-article:5829 | pubmed:author | pubmed-author:BöhmeHH | lld:pubmed |
| pubmed-article:5829 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:5829 | pubmed:volume | 31 | lld:pubmed |
| pubmed-article:5829 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:5829 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:5829 | pubmed:pagination | 68-77 | lld:pubmed |
| pubmed-article:5829 | pubmed:dateRevised | 2009-6-8 | lld:pubmed |
| pubmed-article:5829 | pubmed:meshHeading | pubmed-meshheading:5829-Cyt... | lld:pubmed |
| pubmed-article:5829 | pubmed:meshHeading | pubmed-meshheading:5829-Sod... | lld:pubmed |
| pubmed-article:5829 | pubmed:meshHeading | pubmed-meshheading:5829-Pla... | lld:pubmed |
| pubmed-article:5829 | pubmed:meshHeading | pubmed-meshheading:5829-Chl... | lld:pubmed |
| pubmed-article:5829 | pubmed:meshHeading | pubmed-meshheading:5829-Oxi... | lld:pubmed |
| pubmed-article:5829 | pubmed:meshHeading | pubmed-meshheading:5829-Pho... | lld:pubmed |
| pubmed-article:5829 | pubmed:meshHeading | pubmed-meshheading:5829-NAD... | lld:pubmed |
| pubmed-article:5829 | pubmed:meshHeading | pubmed-meshheading:5829-Ele... | lld:pubmed |
| pubmed-article:5829 | pubmed:meshHeading | pubmed-meshheading:5829-Fer... | lld:pubmed |
| pubmed-article:5829 | pubmed:meshHeading | pubmed-meshheading:5829-Dig... | lld:pubmed |
| pubmed-article:5829 | pubmed:meshHeading | pubmed-meshheading:5829-Par... | lld:pubmed |
| pubmed-article:5829 | pubmed:meshHeading | pubmed-meshheading:5829-Pla... | lld:pubmed |
| pubmed-article:5829 | pubmed:meshHeading | pubmed-meshheading:5829-2,6... | lld:pubmed |
| pubmed-article:5829 | pubmed:meshHeading | pubmed-meshheading:5829-Fer... | lld:pubmed |
| pubmed-article:5829 | pubmed:meshHeading | pubmed-meshheading:5829-Dib... | lld:pubmed |
| pubmed-article:5829 | pubmed:meshHeading | pubmed-meshheading:5829-Dip... | lld:pubmed |
| pubmed-article:5829 | pubmed:articleTitle | Photoreactions of cytochrome b6 and cytochrome f in chloroplast photosystem I fragments. | lld:pubmed |
| pubmed-article:5829 | pubmed:publicationType | Journal Article | lld:pubmed |
