-transparent.png){kind=logo}
Among methionineless mutants of Pseudomonas aeruginosa strain PAO lacking the ability of methylating homocysteine we found two different types: One of them responding to methionine only, the other one to methionine or vitamin B12 alternatively. That means that P. aeruginosa PAO as well as other B12-producing bacteria (with one exception: Aerobacter aerogenes) use only the B12 pathway (metH) for methionine synthesis. The effect of some cys-auxotrophs equally growing on vitamin B12 as described by Calhoun and Feary (1969) was confirmed for P. aeruginosa PAO by our mutants. In a P. aeruginosa strain of other origin, PAE, neither met- nor cys-mutants responding to B12 have been found, although strain PAE as well as strain PAO excessively synthesize B12.
M Wehnert, and
E Günther, and
H Herrmann
September 1969,
Biochemistry,
M Wehnert, and
E Günther, and
H Herrmann
July 1968,
Biochemical and biophysical research communications,
M Wehnert, and
E Günther, and
H Herrmann
October 1972,
FEBS letters,
M Wehnert, and
E Günther, and
H Herrmann
September 1969,
Archives of biochemistry and biophysics,
M Wehnert, and
E Günther, and
H Herrmann
May 1972,
Archives of biochemistry and biophysics,
M Wehnert, and
E Günther, and
H Herrmann
December 1981,
Biochimica et biophysica acta,
M Wehnert, and
E Günther, and
H Herrmann
January 1970,
Zentralblatt fur Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Zweite naturwissenschaftliche Abt.: Allgemeine, landwirtschaftliche und technische Mikrobiologie,
M Wehnert, and
E Günther, and
H Herrmann
August 2002,
Biochemical Society transactions,
M Wehnert, and
E Günther, and
H Herrmann
September 1979,
Canadian journal of microbiology,
M Wehnert, and
E Günther, and
H Herrmann
February 1995,
Microbiology (Reading, England),
