Seeking chemotaxis info

[Hr Dr. S. Shapiro]

Dear Colleagues;

     Does anyone know whether the structure of the TarE protein, reputedly a
chemotactic receptor in E. coli which binds phenol (but whose physiological
ligand is said to be aspartate), has been elucidated?  Kindly send any rele-
vant citations to 

                       toukie at zui.unizh.ch

     Also, does anyone have the current e-mail address and postal address of
Prof. Dr. Robert M. Macnab whose address, according to J. Bact. 169(1): 371
('89) was (is):
 
      Department of Moelcular Biophysics and Biochemistry
      Yale University
      New Haven, Connecticut  06511-8112
 
?  If so, kindly send it to me.

     Thanks in advance to all responders.

Sincerely,
 
(Dr.) S. Shapiro
ZH
toukie at zui.unizh.ch