| Inhibitor studies of dissimilative Fe(III) reduction by Pseudomonas sp. strain 200 ("Pseudomonas ferrireductans") | |
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MedLine Citation:
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PMID: 2428308 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Aerobic respiration and dissimilative iron reduction were studied in pure, batch cultures of Pseudomonas sp. strain 200 ("Pseudomonas ferrireductans"). Specific respiratory inhibitors were used to identify elements of electron transport chains involved in the reduction of molecular oxygen and Fe(III). When cells were grown at a high oxygen concentration, dissimilative iron reduction occurred via an abbreviated electron transport chain. The induction of alternative respiratory pathways resulted from growth at low oxygen tension (less than 0.01 atm [1 atm = 101.29 kPa]). Induced cells were capable of O2 utilization at moderately increased rates; dissimilative iron reduction was accelerated by a factor of 6 to 8. In cells grown at low oxygen tension, dissimilative iron reduction appeared to be uncoupled from oxidative phosphorylation. Models of induced and uninduced electron transport chains, including a mathematical treatment of chemical inhibition within the uninduced, aerobic electron transport system, are presented. In uninduced cells respiring anaerobically, electron transport was limited by ferrireductase activity. This limitation may disappear among induced cells. |
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Authors:
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R G Arnold; T J DiChristina; M R Hoffmann |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
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Title: Applied and environmental microbiology Volume: 52 ISSN: 0099-2240 ISO Abbreviation: Appl. Environ. Microbiol. Publication Date: 1986 Aug |
Date Detail:
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Created Date: 1986-10-23 Completed Date: 1986-10-23 Revised Date: 2009-11-18 |
Medline Journal Info:
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Nlm Unique ID: 7605801 Medline TA: Appl Environ Microbiol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 281-9 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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2,4-Dinitrophenol Aerobiosis Azides / pharmacology Chloramphenicol / pharmacology Dicumarol / pharmacology Dicyclohexylcarbodiimide / pharmacology Dinitrophenols / pharmacology Electron Transport / drug effects Hydroxyquinolines / pharmacology Iron / metabolism* Kinetics Oxidation-Reduction Oxygen Consumption / drug effects* Pseudomonas / drug effects, growth & development, metabolism* Quinacrine / pharmacology Rotenone / pharmacology Sodium Azide Sodium Cyanide / pharmacology |
| Chemical | |
Reg. No./Substance:
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0/Azides; 0/Dinitrophenols; 0/Hydroxyquinolines; 143-33-9/Sodium Cyanide; 26628-22-8/Sodium Azide; 341-88-8/2-(n-heptyl)-4-hydroxyquinoline N-oxide; 51-28-5/2,4-Dinitrophenol; 538-75-0/Dicyclohexylcarbodiimide; 56-75-7/Chloramphenicol; 66-76-2/Dicumarol; 7439-89-6/Iron; 83-79-4/Rotenone; 83-89-6/Quinacrine |
| Comments/Corrections | |
Erratum In:
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Appl Environ Microbiol 1986 Oct;52(4):974 |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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