Production of volatile sulfur compounds by various Fusobacterium species.
In 12 species of Fusobacterium the following characteristics were studied; the desulfhydration of L-cysteine and L-methionine by resting cell suspensions, the formation of alpha-keto-acids from L-cysteine, D-cysteine and L-methionine by cell extracts, and the formation of hydrogen sulfide from L-cysteine, D-cysteine and L-cysteine by cell extracts separated by polyacrylamide gel electrophoresis. Multiple forms of L-cysteine desulfhydrase activity were found in most of the species. In some of them also D-cysteine desulfhydrase activity was demonstrated. Seven of the species had high L-methionine gamma-lyase activity. L-cysteine activity was present in 5 of the species.
Claesson
R
R
Department of Oral Microbiology, University of Umea, Sweden.
Edlund
M B
MB
Persson
S
S
Carlsson
J
J
D013437:Carbon-Sulfur Lyases / Q000378:metabolism*; D003542:Cystathionine gamma-Lyase / Q000378:metabolism*; D003545:Cysteine / Q000378:metabolism; D004591:Electrophoresis, Polyacrylamide Gel; D005673:Fusobacterium / Q000201:enzymology*; D006862:Hydrogen Sulfide / Q000378:metabolism*; D008715:Methionine / Q000378:metabolism; D013438:Sulfhydryl Compounds / Q000378:metabolism*
D013438:Sulfhydryl Compounds; C005231:methylmercaptan; D008715:Methionine; D013437:Carbon-Sulfur Lyases; D003542:Cystathionine gamma-Lyase; C021558:L-methionine gamma-lyase; D003545:Cysteine; D006862:Hydrogen Sulfide