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CO-sensing mechanisms.

Gary P Roberts¹, Hwan Youn, Robert L Kerby

¹Department of Bacteriology, 420 Henry Mall, University of Wisconsin-Madison, Madison, WI 53706, USA. groberts@bact.wisc.edu

Microbiology and Molecular Biology Reviews : MMBR

|September 9, 2004

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Organisms may possess specific carbon monoxide (CO) sensors. This review highlights proteins with CO-sensing abilities, focusing on the molecular details of Rhodospirillum rubrum's CooA sensor.

Area of Science:

Biochemistry
Molecular Biology
Microbiology

Background:

Carbon monoxide (CO) exerts significant physiological effects across diverse organisms.
Emerging evidence suggests the existence of specific biological sensors for CO.

Purpose of the Study:

To review current evidence for proteins with demonstrated or potential carbon monoxide (CO)-sensing capabilities.
To provide a detailed molecular description of the CooA protein from Rhodospirillum rubrum as a model CO sensor.

Main Methods:

Literature review of studies investigating CO-sensing proteins.
Detailed analysis of the molecular structure and function of the CooA protein.

Main Results:

Multiple proteins show potential or demonstrated CO-sensing abilities.

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CooA, a heme-containing protein from Rhodospirillum rubrum, is a well-characterized CO sensor.

The molecular basis for CooA's CO sensing is well understood.

Conclusions:

Specific CO sensors exist in various organisms.
CooA serves as a clear example of a biological CO sensor with elucidated molecular mechanisms.