Chloroplast membranes of the green alga Acetabularia mediterranea. I. Isolation of the photosystem II.
Biochim Biophys Acta
; 387(3): 568-79, 1975 Jun 17.
Article
en En
| MEDLINE
| ID: mdl-1138890
ABSTRACT
1. In the presence of Triton X-100, chloroplast membranes of the green alga Acetabularia mediterranea were disrupted into two subchloroplast fragments which differed in buoyant density. Each of these fractions had distinct and unique complements of polypeptides, indicating an almost complete separation of the two fragments. 2. One of the two subchloroplast fractions was enriched in chlorophyll b. It exhibited Photosystem II activity, was highly fluorescent and was composed of particles of approx. 50 A diameter. 3. The light-harvesting chlorophyll-protein complex of the Photosystem II-active fraction had a molecular weight of 67 000 and contained two different subunits of 23 000 and 21 500. The molecular ratio of these two subunits was 21.
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Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Fotofosforilación
/
Clorofila
/
Cloroplastos
/
Membranas
Idioma:
En
Revista:
Biochim Biophys Acta
Año:
1975
Tipo del documento:
Article