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Bicarbonate binding activity of the CmpA protein of the Cyanobacterium Synechococcus sp strain PCC 7942 involved in active transport of bicarbonate.

Maeda, S; Price, Graeme (Dean); Badger, Murray; Enomoto, Chinka; Omata, Tatsuo


The cmpABCD operon of the cyanobacterium Synechococcus sp. strain PCC 7942 encodes an ATP-binding cassette transporter involved in HCO3- uptake. The three genes, cmpBCD, encode membrane components of an ATP-binding cassette transporter, whereas cmpA encodes a 42-kDa cytoplasmic membrane protein, which is 46.5% identical to the membrane-anchored substrate-binding protein of the nitrate/nitrite transporter. Equilibrium dialysis analysis using H14CO3- showed that a truncated CmpA protein lacking...[Show more]

CollectionsANU Research Publications
Date published: 2000
Type: Journal article
Source: Journal of Biological Chemistry
DOI: 10.1074/jbc.M003034200


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