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The cytochrome bcc-aa3-type respiratory chain of Rhodococcus rhodochrous

Paper ID Volume ID Publish Year Pages File Format Full-Text
21239 43213 2010 6 PDF Available
Title
The cytochrome bcc-aa3-type respiratory chain of Rhodococcus rhodochrous
Abstract

Rhodococcus rhodochrous is an active soil bacterium belonging to the Nocardia group of high GC Gram-positive bacteria. It is rich in various enzymes and thus important in the industrial production of chemicals and bioremediation. In this work, the respiratory chain of this aerobic organism was investigated and characterized. Grown under highly aerobic conditions, the membrane fraction of R. rhodochrous cells only contained a-, b- and c-type cytochromes, suggesting that it is the cytochrome bcc-aa3-type pathway that mainly operates under these conditions. In contrast, the d-type cytochrome was also present under microaerobic conditions, indicating that the alternative pathway of the bd-type oxidase works in these circumstances. In addition, the results of H+/O ratio measurements indicate that these two pathways have different energy efficiencies.

Keywords
Rhodococcus rhodochrous; Respiratory chain; Actinobacteria; H+/O ratio; Energy metabolism
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The cytochrome bcc-aa3-type respiratory chain of Rhodococcus rhodochrous
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Bioscience and Bioengineering - Volume 110, Issue 1, July 2010, Pages 42–47
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us