Category:Complex:KdpD

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Description (originally from EcoCyc[1][2]) KdpD

Comments (originally from EcoCyc[1][2]) KdpD is the sensor member of the |FRAME: KDP-PWY|. It responds to changes in internal potassium ion (K+) concentration, whether directly caused by changes in environmental K+ levels or as a consequence of osmotic shock, then regulates transcription of the kdpABC operon which codes for the |FRAME: ATPASE-1-CPLX|.

Once suggested to be a sensor for changes in turgor pressure, KdpD appears to actually track changes in K+ concentration [3][4][5][6][6][5][7][8][9][10][11][12][6][13][14][15][16][17][18][19][5][20][21][22][23][16][24][25][26][27].


References

  1. ↑ 1.0 1.1 EcoCyc (release 10.6; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  2. ↑ 2.0 2.1 EcoCyc (release 11.1; 2007) Keseler, IM et al. (2005) Nucleic Acids Res. 33(Database issue):D334-7
  3. ↑ Laimins, LA et al. (1981) Osmotic control of kdp operon expression in Escherichia coli. Proc. Natl. Acad. Sci. U.S.A. 78 464-8 PubMed
  4. ↑ Asha, H & Gowrishankar, J (1993) Regulation of kdp operon expression in Escherichia coli: evidence against turgor as signal for transcriptional control. J. Bacteriol. 175 4528-37 PubMed
  5. ↑ 5.0 5.1 5.2 Puppe, W et al. (1996) Characterization of truncated forms of the KdpD protein, the sensor kinase of the K+-translocating Kdp system of Escherichia coli. J. Biol. Chem. 271 25027-34 PubMed
  6. ↑ 6.0 6.1 6.2 Nakashima, K et al. (1993) Functional reconstitution of the putative Escherichia coli osmosensor, KdpD, into liposomes. J. Biochem. 114 615-21 PubMed
  7. ↑ Jung, K et al. (2000) K+ and ionic strength directly influence the autophosphorylation activity of the putative turgor sensor KdpD of Escherichia coli. J. Biol. Chem. 275 40142-7 PubMed
  8. ↑ Jung, K et al. (2001) Cs(+) induces the kdp operon of Escherichia coli by lowering the intracellular K(+) concentration. J. Bacteriol. 183 3800-3 PubMed
  9. ↑ Burmeister, M (1969) Chromosomal Location of a Gene Involved in Potassium Ion Uptake in Escherichia coli B. J. Bacteriol. 100 796-802 PubMed
  10. ↑ Walderhaug, MO et al. (1992) KdpD and KdpE, proteins that control expression of the kdpABC operon, are members of the two-component sensor-effector class of regulators. J. Bacteriol. 174 2152-9 PubMed
  11. ↑ Rhoads, DB et al. (1978) Functional organization of the kdp genes of Escherichia coli K-12. J. Bacteriol. 135 445-52 PubMed
  12. ↑ Nakashima, K et al. (1992) Phosphotransfer signal transduction between two regulatory factors involved in the osmoregulated kdp operon in Escherichia coli. Mol. Microbiol. 6 1777-84 PubMed
  13. ↑ Voelkner, P et al. (1993) Characterization of the KdpD protein, the sensor kinase of the K(+)-translocating Kdp system of Escherichia coli. Eur. J. Biochem. 217 1019-26 PubMed
  14. ↑ Jung, K et al. (1997) Purification, reconstitution, and characterization of KdpD, the turgor sensor of Escherichia coli. J. Biol. Chem. 272 10847-52 PubMed
  15. ↑ Brandon, L et al. (2000) Modulation of KdpD phosphatase implicated in the physiological expression of the kdp ATPase of Escherichia coli. Mol. Microbiol. 38 1086-92 PubMed
  16. ↑ 16.0 16.1 Jung, K & Altendorf, K (1998) Truncation of amino acids 12-128 causes deregulation of the phosphatase activity of the sensor kinase KdpD of Escherichia coli. J. Biol. Chem. 273 17406-10 PubMed
  17. ↑ Stallkamp, I et al. (1999) Negatively charged phospholipids influence the activity of the sensor kinase KdpD of Escherichia coli. Arch. Microbiol. 172 295-302 PubMed
  18. ↑ Heermann, R et al. (1998) The turgor sensor KdpD of Escherichia coli is a homodimer. Biochim. Biophys. Acta 1415 114-24 PubMed
  19. ↑ Zimmann, P et al. (1995) Membrane topology analysis of the sensor kinase KdpD of Escherichia coli. J. Biol. Chem. 270 28282-8 PubMed
  20. ↑ Heermann, R et al. (2003) The transmembrane domains of the sensor kinase KdpD of Escherichia coli are not essential for sensing K+ limitation. Mol. Microbiol. 47 839-48 PubMed
  21. ↑ Rothenbücher, MC et al. (2006) The cytoplasmic C-terminal domain of the Escherichia coli KdpD protein functions as a K+ sensor. J. Bacteriol. 188 1950-8 PubMed
  22. ↑ Jung, K & Altendorf, K (1998) Individual substitutions of clustered arginine residues of the sensor kinase KdpD of Escherichia coli modulate the ratio of kinase to phosphatase activity. J. Biol. Chem. 273 26415-20 PubMed
  23. ↑ Heermann, R et al. (2000) The hydrophilic N-terminal domain complements the membrane-anchored C-terminal domain of the sensor kinase KdpD of Escherichia coli. J. Biol. Chem. 275 17080-5 PubMed
  24. ↑ Stallkamp, I et al. (2002) Amino acid replacements in transmembrane domain 1 influence osmosensing but not K+ sensing by the sensor kinase KdpD of Escherichia coli. Arch. Microbiol. 178 525-30 PubMed
  25. ↑ Jung, K et al. (1998) Effect of cysteine replacements on the properties of the turgor sensor KdpD of Escherichia coli. Biochim. Biophys. Acta 1372 311-22 PubMed
  26. ↑ Facey, SJ & Kuhn, A (2003) The sensor protein KdpD inserts into the Escherichia coli membrane independent of the Sec translocase and YidC. Eur. J. Biochem. 270 1724-34 PubMed
  27. ↑ Polarek, JW et al. (1992) The products of the kdpDE operon are required for expression of the Kdp ATPase of Escherichia coli. J. Bacteriol. 174 2145-51 PubMed

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