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Effect of adenosine-5′-triphosphate-3′-diphosphate and related nucleoside polyphosphates on the spore germination ofStreptomyces galilaeus

✍ Scribed by Yasutaro Hamagishi; Hiroshi Tone; Toshikazu Oki; Taiji Inui

Publisher: Springer
Year: 1980
Tongue: English
Weight: 582 KB
Volume: 125
Category: Article
ISSN: 0302-8933
DOI: 10.1007/bf00446889

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✦ Synopsis

Exogenous addition of adenosine- and guanosine 5'-(di- and tri) phosphate 3'-diphosphate (pppApp, ppApp, pppGpp and ppGpp) at the concentration of 0.5 mM inhibits spore germination of Streptomyces galilaeus ATCC 31133. This reversible inhibitory effect appeared to be at the transcriptional level, and also depends on the phase of spore germination; pppApp inhibited more strongly RNA synthesis in the period of the germ tube emergence than the early stage of germination. No inhibitory effect was observed with normal purine and pyrimidine nucleosides, nucleotides, pApp, pGpp, cyclic AMP and pyrophosphoric acid at the concentration of 0.1 - 1.0 mM.

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Effect of guanosine 5′-diphosphate 3′-diphosphate and related nucleoside polyphosphates on induction of tryptophanase andβ-galactosidase in permeabilized cells ofEscherichia coli

✍ Akihiro Yoshimoto; Toshikazu Oki; Taiji Inui 📂 Article 📅 1978 🏛 Springer 🌐 English ⚖ 450 KB

Exogenous addition of guanosine and adenosine 5'-(mono, di and tri) phosphate 3'-diphosphates (pppGpp, ppGpp, pGpp, pppApp, ppApp and pApp) stimulated the synthesis of tryptophanase and beta-galactosidase in permeabilized cells of Escherichia coli. From the results obtained with ppGpp and pppApp, th