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Staron K, Kowalska-Loth B, Czerwiński RM. Effects of fluorodeoxyuridine and nalidixic acid on the activity of topoisomerase I in plasmodia of Physarum polycephalum. THE INTERNATIONAL JOURNAL OF BIOCHEMISTRY 1992; 24:1303-6. [PMID: 1379557 DOI: 10.1016/0020-711x(92)90205-f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
1. A regulatory coupling between the rate of cellular transcription and the activity of topoisomerase I was investigated in plasmodia of Physarum polycephalum treated with fluorodeoxyuridine or nalidixic acid. 2. Fluorodeoxyuridine at concentrations above 40 micrograms/ml lowered both the incorporation of [3H]uridine and the activity of topoisomerase I to 10% of corresponding control values. 3. Nalidixic acid, in the range of concentrations between 20-50 micrograms/ml did not inhibit the incorporation of [3H]uridine but lowered the activity of topoisomerase I by about half. 4. It is suggested that a coupling between the level of transcription and the activity of topoisomerase I in Physarum plasmodia involves only about a half of the topoisomerase I activity and is limited to transcription occurring on ribosomal genes.
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Affiliation(s)
- K Staron
- Institute of Biochemistry, Warsaw University, Poland
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Staron K, Kowalska-Loth B, Czerwinski RM, Bandorowska J, Guberska J. Topoisomerase I in actively growing plasmodia and during differentiation of the slime mold Physarum polycephalum. BIOCHIMICA ET BIOPHYSICA ACTA 1991; 1088:36-40. [PMID: 1846567 DOI: 10.1016/0167-4781(91)90150-k] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A type I topoisomerase has been purified from nuclei of a slime mold Physarum polycephalum and its activity was tested during spherulation. The final preparation contained a single polypeptide of about 100 kDa. Basic properties of Physarum topoisomerase I (substrate specificity, ionic requirement, sensitivity to inhibitors) were similar to those of topoisomerases from higher eukaryotes. Specific features of Physarum enzyme were that it was rapidly inactivated at 45 degrees C and did not react with antibodies against human topoisomerase I. The activity of topoisomerase I in developed dormant spherules decreased approx. 2-fold, as compared with a 4-fold decrease of RNA and a 10-fold decrease of DNA synthesis. Basic properties of the enzyme remained unchanged during spherulation.
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Affiliation(s)
- K Staron
- Department of Biochemistry, Warsaw University, Poland
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Heads RJ, Carpenter BG. Differential synthesis of histone H1 during early spherulation in Physarum polycephalum. BIOCHIMICA ET BIOPHYSICA ACTA 1990; 1053:56-62. [PMID: 2114182 DOI: 10.1016/0167-4889(90)90026-a] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
H1 and P2 (an H1 degree/HMG-like protein) accumulate during exponential growth of Physarum microplasmodia (unpublished results), indicating that these proteins may play a role in differentiation (spherulation). To test this hypothesis, pulse labelling using [14C]lysine was used to determine whether any differential histone synthesis occurs during salts-induced spherulation. A peak in the uptake of [14C]lysine into microplasmodia was detected between 12 and 24 h following salts-induction. During the same interval, incorporation of label into the CaCl2-extracted histones occurred, with H1 being synthesised at approx. 3 times the level of the core histones and P2. Densitometry of SDS-PAGE gels showed that high levels of H1 were maintained up to 40 h in salts medium, beyond the observed peak in synthesis. The synthesis and accumulation of high levels of H1 during early spherulation indicates a role for this histone in the initiation and maintenance of a transcriptionally inactive differentiated state.
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Affiliation(s)
- R J Heads
- Biophysics Section, School of Biological Sciences, Portsmouth Polytechnic, U.K
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4
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Lacorre-Arescaldino I, Wilhelm M, Wilhelm F, Toublan B. Levels of histone H4 mRNA during spherulation and germination of Physarum polycephalum. Mycology 1989. [DOI: 10.1016/0147-5975(89)90014-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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5
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Fronk J, Toczko K. Histone phosphorylation during repression of proliferation in a lower eucaryote Physarum polycephalum. Biochem Biophys Res Commun 1988; 153:518-24. [PMID: 3382385 DOI: 10.1016/s0006-291x(88)81125-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Nutrient depletion causes a rapid drop in transcription and completely inhibits DNA replication in plasmodia of a slime mold Physarum polycephalum. These events are accompanied by progressive dephosphorylation of histone H3 and no change in the state of phosphorylation of the bulk of histone H1. This shows that the compaction of chromatin associated with transcriptional inactivation does not require phosphorylation of H3 and suggests that the level of basal phosphorylation of H1 is not correlated with the intensity of transcription or DNA replication. An increase in the proportion of unmethylated versus methylated H1 is visible, suggesting a role for this H1 modification in the regulation of chromatin functioning.
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Affiliation(s)
- J Fronk
- Institute of Biochemistry, Warsaw University, Poland
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6
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Lacorre-Arescaldino I, Toublan B, Pastisson C. Flow cytometric determination of nuclear DNA content during differentiation (spherulation and germination) of the myxomycete Physarum polycephalum. Dev Genes Evol 1988; 197:124-127. [PMID: 28305604 DOI: 10.1007/bf00375935] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/1987] [Accepted: 11/22/1987] [Indexed: 10/26/2022]
Abstract
Using flow cytometry, spherulating nuclei of Physarum isolated at the beginning of spherule wall formation were found to exhibit a DNA content corresponding to the G2 phase of the cell cycle, although 8% lower. Before the first mitosis after spherule germination, a very slight incorporation of 3H thymidine into DNA was observed that was too weak to correspond to S phase, strongly suggesting that nuclei are stopped in G2 phase inside the spherules. The lower value of nuclear DNA content found using flow cytometry of germinating spherules may not be related to DNA quantity, but may be due to a difference in chromatin organization during growth or spherulation, resulting in interference with the staining.
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Affiliation(s)
- I Lacorre-Arescaldino
- Faculté des Sciences, Laboratoire de Biologie Cellulaire, B.P. 347, 51062, Reims Cédex, France
| | - B Toublan
- Faculté des Sciences, Laboratoire de Biologie Cellulaire, B.P. 347, 51062, Reims Cédex, France
| | - C Pastisson
- Faculté des Sciences, Laboratoire de Biologie Cellulaire, B.P. 347, 51062, Reims Cédex, France
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Allen RG, Newton RK, Sohal RS, Shipley GL, Nations C. Alterations in superoxide dismutase, glutathione, and peroxides in the plasmodial slime mold Physarum polycephalum during differentiation. J Cell Physiol 1985; 125:413-9. [PMID: 4066766 DOI: 10.1002/jcp.1041250308] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Changes in the level of antioxidant defenses and the concentration of free radical by-products were examined in differentiating (M3cVII and LU897 X LU863), non-differentiating (LU887 X LU897), and heterokaryon microplasmodia of the slime mold Physarum polycephalum during spherulation in salts-only medium. As differentiation proceeded, superoxide dismutase activity increased by as much as 46 fold; glutathione concentration and the rate of oxygen consumption decreased; cyanide-resistant respiration, hydrogen peroxide, and organic peroxide concentrations increased. The non-differentiating culture failed to exhibit any of these changes. A heterokaryon obtained by the fusion of differentiating and non-differentiating strains was observed to differentiate at a very retarded rate and to exhibit the changes observed in the spherulating strains at a correspondingly slower rate. These observations suggest that a free radical mechanism may be involved in the differentiation of Physarum microplasmodia into spherules.
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Allen RG, Newton RK, Farmer KJ, Nations C. Effects of the free radical generator paraquat on differentiation, superoxide dismutase, glutathione and inorganic peroxides in microplasmodia of Physarum polycephalum. CELL AND TISSUE KINETICS 1985; 18:623-30. [PMID: 4064105 DOI: 10.1111/j.1365-2184.1985.tb00705.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The herbicide paraquat was used to investigate the effects of oxidative stress on the spherulation of Physarum polycephalum microplasmodia. The responses of a white non-differentiating strain of Physarum were compared with those of a common yellow strain that readily spherulates in salts-only starvation medium. The addition of paraquat to the salts medium increased the specific activity of superoxide dismutase in both strains; it also induced an increase in the intracellular inorganic peroxide concentration in both strains. Glutathione concentration was higher in the paraquat-treated yellow strain than in the controls. Paraquat had no effect on glutathione concentration in white microplasmodia. Paraquat accelerated spherulation in yellow microplasmodia. The white microplasmodia responded to the herbicide by cleaving into structures similar to immature spherules; however, these structures were not viable. The results of this study support the hypothesis that free radicals are involved in cell state transitions.
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Czupryn M, Fronk J, Toczko K. Chromatin reorganization during early differentiation of Physarum polycephalum. ACTA ACUST UNITED AC 1985. [DOI: 10.1016/0167-4781(85)90113-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Metabolic behaviour of nonhistone chromosomal proteins during differentiation (spherulation) of Physarum polycephalum. ACTA ACUST UNITED AC 1984. [DOI: 10.1016/0020-711x(84)90247-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Adams DS, Noonan D, Jeffery WR. Stored messenger ribonucleoprotein particles in differentiated sclerotia of Physarum polycephalum. Differentiation 1981; 20:177-87. [PMID: 6175547 DOI: 10.1111/j.1432-0436.1981.tb01174.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Starvation induces vegetative microplasmodia of Physarum polycephalum to differentiate into translationally-dormant sclerotia. The existence and the biochemical nature of stored mRNA in sclerotia is examined in this report. The sclerotia contain about 50% of the poly (A)-containing RNA [poly(A)+RNA] complement of microplasmodia as determined by [3H]-poly(U) hybridization. The sclerotial poly(A)+RNA sequences are associated with proteins in a ribonucleoprotein complex [poly(A)+mRNP] which sediments more slowly than the polysomes. Sclerotial poly(A)+RNP sediments more rapidly than poly(A)+RNP derived from the polysomes of microplasmodia despite the occurrence of poly(A)+RNA molecules of a similar size in both particles suggesting the existence of differences in protein composition. Isolation of poly(A)+RNP by oligo (dT)-cellulose chromatography and the analysis of its associated proteins by polyacrylamide gel electrophoresis show that sclerotial poly(A)+RNP contains at least 14 major polypeptides, 11 of which are different in electrophoretic mobility from the polypeptides found in polysomal poly(A)+RNP. Three of the sclerotial poly(A)+RNP polypeptides are associated with the poly(A) sequence (18, 46, and 52 x 10(3) mol. wt. components), while the remaining eight are presumably bound to non-poly(A) portions of the poly(A)+RNA. Although distinct from polysomal poly(A)+RNP, the sclerotial poly(A)+RNP is similar in sedimentation behavior and protein composition (with two exceptions) to the microplasmodial free cytoplasmic poly(A)+RNP. The results suggest that dormant sclerotia store mRNA sequences in association with a distinct set of proteins and that these proteins are similar to those associated with the free cytoplasmic poly(A)+RNP of vegetative plasmodia.
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Brown AJ, Hardman N. Utilization of polyadenylate mRNA during growth and starvation in Physarum polycephalum. EUROPEAN JOURNAL OF BIOCHEMISTRY 1980; 110:413-20. [PMID: 6108214 DOI: 10.1111/j.1432-1033.1980.tb04882.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The effect of growth on the efficiency of utilization of poly(A)-containing mRNA for translation has been investigated in microplasmodia of Physarum polycephalum. Measurement of the relative proportions of poly(A)-rich mRNA in polysomal and post-polysomal fractions isolated by sucrose density gradient centrifugation reveals that newly synthesized poly(A)-rich mRNA is present in increasing proportions in the polysomal region during exponential growth. However, the proportion of long-lived poly(A)-rich mRNA observed in actively-translating polysomes declines as starvation approaches. The ribonuclease content and morphology of the microplasmodia were monitored during growth and starvation in an effort to related this phenomenon to the onset of spherulation.
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Physarum polycephalum: A Review of a Model System Using a Structure-Function Approach. ACTA ACUST UNITED AC 1980. [DOI: 10.1016/s0074-7696(08)61756-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
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14
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Jeffery WR. Translational regulation of polysome formation during dormancy of Physarum polycephalum. J Bacteriol 1979; 140:490-7. [PMID: 315405 PMCID: PMC216673 DOI: 10.1128/jb.140.2.490-497.1979] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The translational activity of actively growing microplasmodia and dormant microsclerotia of Physarum polycephalum was investigated by analyzing the distribution of ribosomes in polysomes. Microplasmodial post-mitochondrial fractions contained substantial amounts of polysomes and ribosomal subunits but very few native monosomes. During the starvation period which preceded microsclerotium formation, polysome levels remained constant, whereas the subunit titer began to increase. During encystment ribosomal subunits continued to accumulate as the level of polysomes gradually decreased. Dormant microsclerotia contained a large surplus of stored ribosomal subunits but no detectable polysomes. However, incubation of microsclerotia with concentrations of cycloheximide sufficient to slow polypeptide elongation without affecting initiation caused the gradual reappearance of polysomes at the expense of the subunits. Under these conditions the percentage of subunits driven into polysomes reached values similar to those of actively growing microplasmodia. Microsclerotia returned to nutrient medium contained very low levels of polysomes during the lag period which preceded germination. These were formed with preexisting, stored messenger ribonucleic acid. During the germination period, polysome levels were markedly increased. This elevation was dependent on new ribonucleic acid transcription. It is concluded that dormant microsclerotia contain functional messenger ribonucleic acid and ribosomes which are subject to translational repression at the level of initiation.
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Differential synthesis of an alkaline endonuclease in Physarum polycephalum. Arch Microbiol 1979. [DOI: 10.1007/bf00411360] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Studies on isoenzyme pattern during differentiation (spherulation) of Physarum polycephalum. Arch Microbiol 1979. [DOI: 10.1007/bf00409097] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Polanshek MM, Blomquist JC, Evans TE, Rusch HP. Aminopeptidases of Physarum polycephalum during growth and differentiation. Arch Biochem Biophys 1978; 190:261-9. [PMID: 708073 DOI: 10.1016/0003-9861(78)90275-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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19
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Amino acid pool and protein turnover during differentiation (spherulation) ofPhysarum polycephalum. Arch Microbiol 1978. [DOI: 10.1007/bf00689347] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Hildebrandt A, Sauer HW. Transcription of ribosomal RNA in the life cycle of Physarum may be regulated by a specific nucleolar initiation inhibitor. Biochem Biophys Res Commun 1977; 74:466-72. [PMID: 556937 DOI: 10.1016/0006-291x(77)90327-8] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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Hildebrandt A, Sauer HW. Levels of RNA polymerase activities during growth, encystment and germination ofPhysarum polycephalum. ACTA ACUST UNITED AC 1976; 180:149-156. [DOI: 10.1007/bf00848103] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/1976] [Accepted: 03/17/1976] [Indexed: 10/26/2022]
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Lovett JS. Growth and differentiation of the water mold Blastocladiella emersonii: cytodifferentiation and the role of ribonucleic acid and protein synthesis. BACTERIOLOGICAL REVIEWS 1975; 39:345-404. [PMID: 1108867 PMCID: PMC408340 DOI: 10.1128/br.39.4.345-404.1975] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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Bohnert HJ, Schiller B. Circular DNA and rolling circles in nucleolar rDNA from mitotic nuclei of Physarum polycephalum. EUROPEAN JOURNAL OF BIOCHEMISTRY 1975; 57:361-9. [PMID: 1236803 DOI: 10.1111/j.1432-1033.1975.tb02309.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
1. About 15% of nucleolar DNA (1.712 g/cm3) from Physarum polycephalum displaying maximum hybridization to ribosomal RNA, is composed of circular DNA of 3.9 +/- 0.2 mum contour length or multiples thereof. 2. A portion of these circular molecules (25%) contained linear DNA pieces longer than circumference length. In a small fraction of circular DNA linear pieces, shorter than the unit length, were observed. 3. Most nucleolar DNA, [3H]thymidine-labeled or hybridizable to ribosomal RNA was separable from chromosomal DNA during G2 phase, mitosis and S phase of the cell cycle. 4. Ribosomal DNA content was not amplified during the cell cycle, was unchanged during exponential or stationary growth phase and amounted to about 0.11 -- 0.21% of nuclear DNA in diploid and hexaploid strains of Physarum or 100--200 ribosomal genes per diploid genome.
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Aminopeptidases of Physarum polycephalum. Activity, isoenzyme pattern, and synthesis during differentiation. J Biol Chem 1975. [DOI: 10.1016/s0021-9258(19)40961-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Fouquet H, Wick R, BOHME R, Sauer HW. Effects of cordycepin on RNA sythesis in Physarum polycephalum. Arch Biochem Biophys 1975; 168:273-80. [PMID: 1079713 DOI: 10.1016/0003-9861(75)90251-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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26
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Bernstam VA, Arndt S. Effects of supraoptimal temperatures on the myxomycetePhysarum polycephalum. Arch Microbiol 1974. [DOI: 10.1007/bf02451777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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27
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Bernstam VA. Effects of supraoptimal temperatures on the myxomycetePhysarum polycephalum. Arch Microbiol 1974. [DOI: 10.1007/bf02451776] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Timberlake WE, McDowell L, Cheney J, Griffin DH. Protein synthesis during the differentiation of sporangia in the water mold Achlya. J Bacteriol 1973; 116:67-73. [PMID: 4745427 PMCID: PMC246392 DOI: 10.1128/jb.116.1.67-73.1973] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
During the synchronous differentiation of sporangia in the absence of added nutrients, the water mold Achlya bisexualis (Coker and Couch) actively synthesized protein. Inhibition of protein synthesis at any time during the sporulation process completely inhibited further differentiation. Large changes in the rate of radioactive amino acid uptake resulted in changes in the specific activity of the cellular amino acid pool. The rate of protein synthesis was calculated from the amino acid pool specific activity and the incorporation of isotope into protein. During the 1st h after induction of the sporulation process, the rate of protein synthesis increased to two times the initial value. The amino acid precursors for this synthesis were supplied by the degradation of preexisting protein. Proteolytic enzyme activity assayed in vitro increased in proportion to the in vivo rates of protein synthesis and degradation. Differentiation was accompanied by a slight decline in dry weight of the mycelium as well as by a decrease in the protein content, whereas the relative size of the amino acid pools remained constant.
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Hüttermann A, Gebauer M. Differential protein synthesis during differentiation (spherulation) of Physarum polycephalum: lack of synthesis of glucose-6-phosphate dehydrogenase. ARCHIV FUR MIKROBIOLOGIE 1972; 85:91-4. [PMID: 4672424 DOI: 10.1007/bf00425146] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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Evidence for the de novo synthesis of glutamate dehydrogenase during the spherulation of Physarum polycephalum. Arch Microbiol 1971. [DOI: 10.1007/bf00407991] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Hüttermann A, Chet I. Activity of some enzymes in Physarum polycephalum. 3. During spherulation (differentiation) induced by mannitol. ARCHIV FUR MIKROBIOLOGIE 1971; 78:189-92. [PMID: 4327869 DOI: 10.1007/bf00424875] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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32
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H�ttermann A, Porter MT, Rusch HP. Activity of some enzymes in Physarum polycephalum. Arch Microbiol 1970. [DOI: 10.1007/bf00412355] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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