𝔖 Bobbio Scriptorium
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Factor C, a regulatory protein of Streptomyces griseus induces release of potassium from the mycelium

✍ Scribed by Dr. F. Szeszák; S. Vitális; G. Szabó

Book ID
102910557
Publisher
John Wiley and Sons
Year
1989
Tongue
English
Weight
520 KB
Volume
29
Category
Article
ISSN
0233-111X

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✦ Synopsis

Externdl potassium concentration was measured in suspensions of washed living mycclia of Streptornycus strains. An active uptake of K t by the mycelium was observed from the medium at proper aeration and stirring.

The endogenous regulatory protein factor C, in very low concentrations (down to 0.7 ng rnl-'), induced in a specific way the release of K'. Changes in the electrolyte composition of the medium had moderate effect on the factor C' induced K' release. Factor C proved to bc active in nine different Stieptor~rj*ce.s strains. Only S. grisrirs 45H, the producer of factor C. did not respond. Response to factor Cwas not affected by chloramphenicol or actinomycin D. The process followed a "slow kinetics" with 3 -10 min latency of K + release.

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