Group Members

(For e-mail, just click on the name after "e-mail")

Dr. Klaas Martinus Pos
Professor & Group Leader     
phone +49-(0)69-798-29251
e-mail:

Beate Braungart     
Administrative assistant
phone +49-(0)69-798-29238
e-mail:

Senior Scientists

Dr. Oliver Richter     
phone +49-(0)69-798-29240
e-mail: 

Dr. Heng-Keat Tam
phone: +49-(0)69-798-29242
e-mail: 

Postdocs

-

Graduate students

Selena Đorđević
Phone: +49-(0)69 - 798 29241
e-mail: 

Wuen Ee (Wendy) Foong
Phone: +49-(0)69-798-29242
Email: 

Jessica Kobylka
Phone: +49-(0)69-798-29240
Email:

Miriam Kuth
Phone: +49-(0)69-798-29240
Email:

Reinke Müller
phone: +49-(0)69 - 798 29241
e-mail:

Alina Ornik     
phone +49-(0)69-798-29241
e-mail:

Julia Wilhelm    
phone +49-(0)69-798-29241
e-mail: 

Narek Yousefian
phone+49-(0)69-798-29241
e-mail: 

Technicians

Jasmin El-Delik       
phone +49-(0)69-798-29240
e-mail:

Christian Groß
phone: +49-(0)69-798-29236
e-mail:

Andrea Herrmann
phone +49-(0)69-798-29242
e-mail.

Publications 1991-2003

Wild, M.R., Pos, K. M., Dimroth, P. (2003)
Site-directed sulfhydryl labeling of the oxaloacetate decarboxylase Na+ pump of Klebsiella pneumoniae: Helix VIII comprises a portion of the sodium ion channel.
Biochemistry 42: 11615-11624.

Pos, K. M., Diederichs, K. (2002)
Purification, crystallization and preliminary diffraction studies of AcrB, an inner-membrane multi-drug efflux protein.
Acta Cryst. D 58: 1865-1867.

Schmid, M., Vorburger, T., Pos, K. M.,  Dimroth, P. (2002)
Role of conserved residues within helices IV and VIII of the oxaloacetate decarboxylase β subunit in the energy coupling mechanism of the Na+ pump.
Eur. J. Biochem. 269: 2997-3004.

Kästner, C. N., Schneider, K., Dimroth, P., Pos, K. M. (2002)
Characterization of the citrate transporter CitW of Klebsiella pneumoniae.
Arch. Microbiol. 177: 500-50.

Langton, K., O'Reilly, J., Rutherford, N.,  Griffith, J., Pos, K. M., Poolman, B., Gwynne, M., Badman, G., Herbert R., Henderson, P.J. (2002)
Prokaryote multidrug efflux proteins of the major facilitator superfamily: amplified expression, purification and characterisation.
In: Microbial Multidrug Efflux. Eds. Paulsen I. T. and Lewis, K. Chapter 9. Horizon Press. ISBN: 1-898486-33-6.

Ward, A., Hoyle, C., Palmer, S., O’Reilly, J., Griffith, J., Pos, K. M.,  Morrison, S., Poolman, B., Gwynne, M., Henderson, P.J. (2001)
Prokaryote multidrug efflux proteins of the major facilitator superfamily: amplified expression, purification and characterisation.
J. Mol. Micro. Biotechnol. 3: 193-200.

Kästner, C. N., Dimroth, P., Pos, K.M. (2000)
The Na+-dependent citrate carrier of Klebsiella pneumoniae: high-level expression and site-directed mutagenesis of asparagine-185 and glutamate-194.
Arch. Microbiol. 174: 67-73.
 
Schaffitzel, C., Berg, M., Dimroth, P., Pos, K.M. (1998)
Identification of an Na+-dependent malonate transporter of Malonomonas rubra and its dependence on two separate genes.
J. Bacteriol. 180: 2689-2693.
 
Pos, K. M., Dimroth, P., Bott, M. (1998)
The Escherichia coli citrate carrier CitT: a member of a novel eubacterial transporter family related to the 2-oxoglutarate/malate translocator from spinach chloroplasts.
J. Bacteriol. 180: 4160-4165.
 
Pos, K. M., Dimroth, P. (1996)
Functional properties of the purified Na+-dependent citrate carrier of Klebsiella pneumoniae: Evidence for asymmetric orientation of the carrier protein in proteoliposomes.
Biochemistry 35: 1018-1026.
 
Pos, K. M., Bott, M., Dimroth, P. (1994)
Purification of two active fusion proteins of the Na+-dependent citrate carrier of Klebsiella pneumoniae.
FEBS Lett. 347: 37-41.

Tan, P.S.T., Chapot-Chartier, M-. P., Pos, K. M., Rousseau, M., Boquien, C-. Y., Gripon, J-. P., Konings, W. N. (1992).
Localization of peptidases in Lactococci.
Appl. Environ Microbiol. 58: 285-290.

Tan, P.S.T., Pos, K. M., Konings, W. N. (1991).
Purification and characterization of an endopeptidase from Lactococcus lactis subsp. cremoris Wg2.
Appl. Environ. Microbiol. 57: 3593-3599.