1987
DOI: 10.1128/jb.169.10.4790-4795.1987
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Characterization of Pi-repressible enzymes secreted in culture media by Neurospora crassa wild-type cells and null-type mutants

Abstract: In wild-type mycelial cultures of Neurospora crassa under Pi-limited conditions, alkaline phosphatase, cyclic phosphodiesterases I, II, III, and IV, 5'-nucleotidase, acid and alkaline nucleases, RNase Nl, and a newly detected endonuclease were secreted into the culture media. These enzymes were either not produced or were produced in very reduced levels in mutants nuc-l, -2, -3, 4, -5, -6, and -7 and cpd4. The proteins were examined by polyacrylamide gel electrophoresis in a manner which allowed the identifica… Show more

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Cited by 8 publications
(3 citation statements)
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“…Pi is an essential nutrient for all organisms, being necessary for the structure and growth of cells, metabolic responses, nucleic acid synthesis, membrane phospholipids, and a component of several cell metabolites (Paytan and McLaughlin, 2007). In this way, the phosphate uptake from the environment in both prokaryotic and primitive eukaryotic organisms is one of the most critical processes for nutrient acquisition (Furukama et al, 1987). The fungi N. crassa and S. cerevisiae are used as biological models for experimental studies that aim to comprehend the molecular mechanisms that are initiated by variations of the environmental Pi concentration.…”
Section: Nuc-1 Transcription Factor and Phosphate Homeostasismentioning
confidence: 99%
“…Pi is an essential nutrient for all organisms, being necessary for the structure and growth of cells, metabolic responses, nucleic acid synthesis, membrane phospholipids, and a component of several cell metabolites (Paytan and McLaughlin, 2007). In this way, the phosphate uptake from the environment in both prokaryotic and primitive eukaryotic organisms is one of the most critical processes for nutrient acquisition (Furukama et al, 1987). The fungi N. crassa and S. cerevisiae are used as biological models for experimental studies that aim to comprehend the molecular mechanisms that are initiated by variations of the environmental Pi concentration.…”
Section: Nuc-1 Transcription Factor and Phosphate Homeostasismentioning
confidence: 99%
“…O fosfato inorgânico (Pi) é um nutriente essencial em todos os organismos, necessário tanto para a estrutura e crescimento celular, como para respostas metabólicas, síntese de ácidos nucléicos e fosfolipídeos de membrana, sendo componente de inúmeros metabólitos celulares (Paytan e McLaughlin, 2007). Assim, a assimilação de fosfato do ambiente, em procariotos e em eucariotos primitivos, é um dos processos mais importantes de aquisição de nutrientes (Furukama et al, 1987 permeases e outras, cuja expressão depende dos níveis intracelulares de Pi (Ogawa et al, 2000;Peleg et al, 1996;Persson et al, 2003).…”
Section: O Fator De Transcrição Nuc-1unclassified
“…O fosfato inorgânico (Pi) é um nutriente essencial para todos os organismos, sendo necessário tanto para a estrutura celular como para o transporte de energia, síntese de ácidos nucléicos e crescimento celular (Paytan e McLaughlin, 2007). Assim, a assimilação de fosfato do ambiente, em procariotos e em eucariotos primitivos, é um dos processos mais importante de aquisição de nutrientes (Furukama et al, 1987). Quando N. crassa é cultivado em meio contendo quantidades limitantes de Pi, ou com ácidos nucléicos como única fonte de Pi, diversas enzimas são sintetizadas com a finalidade de disponibilizar mais fosfato para a célula (Lehman et al, 1973;Lowendorf e Slayman, 1975).…”
Section: Fungos Como Modelos Biológicos -Resposta Adaptativa E Aquisiunclassified