Nachweis einer direkten Isomerisierung von Mannose zu Fructose und ihre Bedeutung für den Mannosestoffwechsel von  Pseudomonas syringae  pv.  phaseolicola | Zendy

Sauerstein J. | Zendy; Ramm M. | Zendy; Schubert K. | Zendy; Reuter G. | Zendy

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Nachweis einer direkten Isomerisierung von Mannose zu Fructose und ihre Bedeutung für den Mannosestoffwechsel von Pseudomonas syringae pv. phaseolicola

Author(s) -

Sauerstein J.,

Ramm M.,

Schubert K.,

Reuter G.

Publication year - 1988

Publication title -

journal of basic microbiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.58

H-Index - 54

eISSN - 1521-4028

pISSN - 0233-111X

DOI - 10.1002/jobm.3620280928

Subject(s) - isomerase , chemistry , enzyme , mannose , pseudomonas syringae , fructose , pseudomonas , pseudomonadales , bacteria , biochemistry , biology , gene , genetics

The phytopathogenic pseudomonad Pseudomonas syringae pv. phaseolicola possesses an isomerase which converts mannose to fructose. The synthesis of this enzyme is constitutive. The K M value for mannose is 0.02 M. Fe 2 + , Mg 2 + and Mn 2 + ions stimulate the enzyme activity, whereas Cu 2 + and Zn 2 + iones are inhibitors. Since the enzymes mannokinase and phosphomannose isomerase could not be detected, the isomerase and an inducible fructokinase must have a function in the metabolism of mannose by this bacterium.

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