PMID:12218037
| Citation |
van der Laan, M, Gassel, M and Altendorf, K (2002) Characterization of amino acid substitutions in KdpA, the K+-binding and -translocating subunit of the KdpFABC complex of Escherichia coli. J. Bacteriol. 184:5491-4 |
|---|---|
| Abstract |
When grown under K+ limitation, Escherichia coli induces the K+-translocating KdpFABC complex. The stimulation of ATPase activity by NH4+ ions was shown for the first time. Substitutions in KdpA, which is responsible for K+ binding and translocation, revealed that enzyme complexes KdpA:G232A and KdpA:G232S have completely lost their cation selectivity. |
| Links | |
| Keywords |
Adenosine Triphosphatases/chemistry; Adenosine Triphosphatases/genetics; Adenosine Triphosphatases/metabolism; Amino Acid Substitution; Cation Transport Proteins/chemistry; Cation Transport Proteins/genetics; Cation Transport Proteins/metabolism; Cations/metabolism; Escherichia coli/enzymology; Escherichia coli/genetics; Escherichia coli/growth & development; Escherichia coli Proteins/chemistry; Escherichia coli Proteins/genetics; Escherichia coli Proteins/metabolism; Glycine; Mutagenesis, Site-Directed; Plasmids/genetics; Potassium/metabolism |
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