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Hampp, R. ; Ziegler, I.

Sulfate and sulfite translocation via the phosphate translocator of the inner envelope membrane of chloroplasts.

Planta 137, 309-312 (1977)
DOI PMC
Open Access Green möglich sobald Postprint bei der ZB eingereicht worden ist.
The permeability of the inner envelope membranes of spinach (Spinacia oleracea) chloroplasts to sulfite and sulfate was investigated in vitro, using the technique of silicone oil centrifugal filtration. The results show that there is a permeability towards both ions, resulting in rates of uptake of about 1.0 (SO3 2-) and 0.7 (SO4 2-) μmol mg chlorophyll-1 h-1 respectively (external concentration 2 mmol l-1). The rates depend on the external concentration of the anions. Anion exchange experiments with 35S-preloaded chloroplasts indicate that sulfite and sulfate are exchanged for inorganic phosphate, phosphoglyceric acid, and dihydroxyacetone phosphate with rates up to 14 nmol mg chlorophyll-1 min-1. There is no exchange for glucose-6-phosphate and malate. Because of the similarities to the transport of inorganic phosphate and triose phosphates the results give evidence that the phosphate translocator of the inner envelope membrane of chloroplasts is also involved in sulfite and sulfate transport - at least in part.
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Publikationstyp Artikel: Journalartikel
Dokumenttyp Wissenschaftlicher Artikel
Schlagwörter Chloroplast Envelope ; Ion Transport ; Sulfate ; Sulfite
ISSN (print) / ISBN 0032-0935
e-ISSN 1432-2048
Zeitschrift Planta
Quellenangaben Band: 137, Heft: 3, Seiten: 309-312 Artikelnummer: , Supplement: ,
Verlag Springer
Begutachtungsstatus Peer reviewed
Institut(e) Institut für Biochemie