Zobrazeno 1 - 10 of 21 pro vyhledávání: '"Herb B. LéJohn"'
1
Recharacterization of fungal dinucleoside polyphosphate (HS3)
Autor: Peter C. Loewen, David R. McNaughton, Herb B. LéJohn, Glen R. Klassen
Publikováno v: Canadian Journal of Biochemistry. 56:217-226
Three polyphosphorylated dinucleosides given the pseudonyms of HS3, HS2, and HS1 that were erroneously described as diguanosine polyphosphates (LéJohn, H. B., Cameron, L. E., McNaughton, D. R. &Klassen, G. R. (1975) Biochem. Biophys. Res. Commun. 66
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bff26b15ca8f941fac1b2f2ae73f6d85
https://doi.org/10.1139/o78-036
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2
L-Glutamine alteration of gene expression, not of polyphosphate and calcium metabolism, is a key event in arresting fungal sporulation
Autor: Herb B. LéJohn
Publikováno v: Canadian Journal of Biochemistry and Cell Biology. 61:262-273
Vegetatively growing cells of the coenocytic freshwater mould Achlya developed asexual sporangia and sporulated within 6 h of postransfer to a nutrient-free (starvation) medium. Sporangial development was arrested by the addition of L-glutamine to st
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::131c8ac525c14c8776edab087a4e5ebd
https://doi.org/10.1139/o83-037
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3
Possible regulation of macromolecular biosynthesis in mammalian cells by a novel dinucleoside polyphosphate (HS3) produced during step-down growth conditions
Autor: Jim A. Wright, Herb B. LéJohn, Swee Han Goh
Publikováno v: Journal of Cellular Physiology. 93:353-362
Shortly after the withdrawal of L-glutamine from the growth medium of Chinese hamster ovary (CHO) cells, the rate of synthesis of a bizarre dinucleoside polyphosphate, HS3, increased by 5- to 6-fold. This elevated rate of synthesis was maintained for
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::85690bff2b65d5d94ff1c6e9505dc805
https://doi.org/10.1002/jcp.1040930306
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4
Isolation and analysis of fungal phosphorylated proteoglycan
Autor: Linda E. Cameron, Herb B. LéJohn
Publikováno v: Canadian Journal of Biochemistry. 56:237-245
A low molecular-weight phosphorylated proteoglycan (PPG) was isolated from the freshwater fungus Achlya by cold osmotic-shock treatment of newly germinated spores and purified. PPG contained 38.5% carbohydrate (89% glucose), 33% protein, and 28.5% ph
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::88903ad013da8dbb5a19ee74d8f7110f
https://doi.org/10.1139/o78-038
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5
Inhibition of mammalian ribonucleotide reductase by a dinucleotide produced in eucaryotic cells
Autor: Herb B. LéJohn, David R. McNaughton, Swee Han Goh, William H. Lewis, Jim A. Wright
Publikováno v: Journal of Cellular Physiology. 93:345-352
HS3, a highly phosphorylated dinucleoside originally purified from the fungus Achlya, has been isolated from Chinese hamster ovary cells undergoing glutamine starvation. The HS3 compounds obtained from the fungal and mammalian sources exhibited simil
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9acf68a47022e19d8adc5af834c30d02
https://doi.org/10.1002/jcp.1040930305
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6
Diguanosine nucleotides of fungi that regulate RNA polymerases isolated and partially characterised
Autor: Herb B. LéJohn, Glen R. Klassen, Linda E. Cameron, David R. McNaughton
Publikováno v: Biochemical and Biophysical Research Communications. 66:460-467
Three unusual phosphorylated diguanosine compounds called ‘hot spots’ HS-1, HS-2 and HS-3 (ref. LeJohn, H.B. Proc. Can. Fed. Biol. Soc. 18, 159, 1975) have been isolated as acid-soluble materials from several fungi, Achlya, Blastocladiella emerso
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebf1cea26bde4d82893714f1bb73e593
https://doi.org/10.1016/0006-291x(75)90533-1
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7
Changes in gene expression patterns for specific proteins when vegetatively growing cells of the fungus Achlya are induced to differentiate by starvation
Autor: Herb B. LéJohn
Publikováno v: Canadian Journal of Biochemistry and Cell Biology. 61:1172-1184
Within 6 h after Achlya cells growing vegetatively in a defined medium were transferred to a nutrient-free medium (starvation), they synchronously developed asexual sporangia and sporulated. This response, however, depended on the vegetative age of t
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::c73bd75be42439a33ec20f792e6646a8
https://doi.org/10.1139/o83-151
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8
Heat and nutritional shock-induced proteins of the fungus Achlya are different and under independent transcriptional control
Autor: Cleantis E. Braithwaite, Herb B. LéJohn
Publikováno v: Canadian Journal of Biochemistry and Cell Biology. 62:837-846
When the temperature of exponentially growing cells of the coenocytic fungus Achlya klebsiana strain 1969 was suddenly elevated from 24 to 37 °C (thermal stress), synthesis of at least 12 preexisting proteins (heat-shock proteins, HSPs) was vigorous
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4cfcb8b0d97b2b0d2eff23a616864b01
https://doi.org/10.1139/o84-107
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10
Regulation of Mitochondrial Glutamic Dehydrogenase by Divalent Metals, Nucleotides, and α-Ketoglutarate
Autor: R.V. Sawula, Herb B. LéJohn, G.R. Klassen, Susan Jackson
Publikováno v: Journal of Biological Chemistry. 244:5346-5356
The substrates, NAD+, NADH, and to a lesser extent, glutamate, of a freely reversible glutamic dehydrogenase from Blastocladiella emersonii, and diverse allosteric modulators (AMP, ADP, Ca++, Mn++) have been shown to bind to the enzyme and prevent it
Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::22a14285d3df17e973b4b1fddc4c788e
https://doi.org/10.1016/s0021-9258(18)63666-x
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