Section 43
Chapter 42,141

ATP-dependent K+ uptake by a photosynthetic purple sulfur bacterium

Davidson, V.L.; Knaff, D.B.

Archives of Biochemistry and Biophysics 213(2): 358-362


ISSN/ISBN: 0003-9861
PMID: 7073281
DOI: 10.1016/0003-9861(82)90561-6
Accession: 042140281

Download citation:  

Full Text Article emailed within 0-6 h
Payments are secure & encrypted
Powered by Stripe
Powered by PayPal

Chromatium vinosum contains an ATP-dependent K+ uptake system which is light independent and sensitive to DCCD [N,N'-dicyclohexylcarbodiimide]. Kinetic measurements show Km = 0.27 mM for K+ and Km = 1.3 mM for Tl+, an alernate substrate. The internal K+ content of the cell increases with increasing medium osmolality and is unaffected by changes in external K+ concentration.