Výsledky vyhledávání - "J. R. Quayle"

Dihydroxyacetone: a Product of Xylulose 5-Phosphate-dependent Fixation of Formaldehyde by Methanol-grown Candida boidinii

Autor: M. J. Waites, J. R. Quayle

Publikováno v: Microbiology. 118:321-327

The reaction between xylulose 5-phosphate and formaldehyde catalysed by cell-free extracts of methanol-grown Candida boidinii has been examined. Dihydroxyacetone was identified as a reaction product by thin-layer chromatography. The dihydroxyacetone

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::42232fc2168b753ca9064306e4e15dfd
https://doi.org/10.1099/00221287-118-2-321

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Pentose Phosphate-dependent Fixation of Formaldehyde by Methanol-grown Hansenula polymorpha and Candida boidinii

Autor: J. R. Quayle, Mary L. O'connor

Publikováno v: Microbiology. 120:219-225

A method has been developed for the continuous spectrophotometric assay of dihydroxy-acetone synthase present in methanol-grown yeasts. This enzyme catalyses the condensation of formaldehyde with a pentose phosphate (most probably xylulose 5-phosphat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1c9a2cb01f517082c5a7989956426d42
https://doi.org/10.1099/00221287-120-1-219

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Purification and properties of malyl-coenzyme A lyase from Pseudomonas AM1

Autor: J. R. Quayle, A. J. Hacking

Publikováno v: Biochemical Journal. 139:399-405

1. Malyl-CoA lyase was purified 20-fold from extracts of methanol-grown Pseudomonas AM1. 2. Preparations of the enzyme were essentially homogeneous by electrophoretic and ultracentrifugal criteria. 3. Malyl-CoA lyase has a molecular weight of 190000

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::612f69786571f804ed35f91e423bd0f1
https://doi.org/10.1042/bj1390399

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Influence of the Carbon: Nitrogen Ratio of the Growth Medium on the Cellular Composition and the Ability of the Methylotrophic Yeast Hansenula polymorpha to Utilize Mixed Carbon Sources

Autor: Th. Egli, J. R. Quayle

Publikováno v: Microbiology. 132:1779-1788

Summary: The methylotrophic yeast Hansenula polymorpha was grown in a chemostat with a medium containing a mixture of glucose (C6) and methanol (C1) (87·8% C6: 12·2% C1, w/w) as sole carbon source and NH4 + as sole nitrogen source. At a constant gr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4972552033789823118a064350d7fe5c
https://doi.org/10.1099/00221287-132-7-1779

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Determination of the Labelling Pattern of Dihydroxyacetone and Hexose Phosphate Following a Brief Incubation of Methanol-grown Hansenula polymorpha with [14C]Methanol

Autor: M. J. Waites, Nic D. Lindley, J. R. Quayle

Publikováno v: Scopus-Elsevier

The labelling patterns of dihydroxyacetone and hexose phosphate produced after a 2 s incubation of methanol-grown Hansenula polymorpha with [14C]methanol have been determined. In dihydroxyacetone over 90% of the radioactivity was located in C-1 and C

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1e627cf562941d48b6a35426a3a8f37f
https://doi.org/10.1099/00221287-122-2-193

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Co-metabolism

Autor: J. R. Quayle, D. I. Stirling, H. Dalton

Publikováno v: Philosophical Transactions of the Royal Society of London. B, Biological Sciences. 297:481-496

There have been numerous instances reported when potentially recalcitrant compounds have been modified by microorganisms or completely mineralized by mixed communities of organisms; an example is pesticide biodegradation. Both situations rely upon th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3eaf8f4dbea1630729f010ad18dd7fef
https://doi.org/10.1098/rstb.1982.0056

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Synthesis and Hydrolysis of Malyl-Coenzyme A by Pseudomonas AM1: an Apparent Malate Synthase Activity

Autor: J. R. Quayle, R. B. Cox

Publikováno v: Journal of General Microbiology. 95:121-133

SUMMARY: The malate synthase activity detectable in crude extracts of Pseudomonas AM1 has been shown to be due to a coupling of a malyl-CoA hydrolase with malyl-CoA lyase and not due to a discrete malate synthase enzyme. The partial purification of t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3c752d62dd1da95fa1fb23645026f034
https://doi.org/10.1099/00221287-95-1-121

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Hydroxypyruvate Reductase Activity in Paracoccus denitrificans

Autor: C. W. Bamforth, J. R. Quayle

Publikováno v: Journal of General Microbiology. 101:259-267

Summary: Extracts of Paracoccus denitrificans contain NADP-linked hydroxypyruvate reductase activity. The enzyme responsible has been separated and partially purified. It showed some activity with glyoxylate, acetoin, diacetyl and oxaloacetate and wa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ccefb181acb3b4cd9358380571a75cef
https://doi.org/10.1099/00221287-101-2-259

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Characterization of the Assimilatory and Dissimilatory Pathways of Carbon Metabolism during Growth of Methylophilus methylotrophus on Methanol

Autor: A. J. Beardsmore, P. N. G. Aperghis, J. R. Quayle

Publikováno v: Microbiology. 128:1423-1439

Summary: The enzyme profile of methanol-grown Methylophilus methylotrophus has been determined. It shows that the organism uses a variant of the ribulose monophosphate cycle of formaldehyde fixation that involves cleavage of hexose phosphate by 2-ket

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::3412592a2a9da4a58b0d53bfa4f65738
https://doi.org/10.1099/00221287-128-7-1423

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