A sensor model based on the porphyrin nucleus of the soluble guanylate cyclase enzyme is modeled and tested with nitric oxide and carbon monoxide. Molecular oxygen is tested as a possible interferer. Geometries and electronic structures of the model are assessed by density functional theory. Vibrational circular dichroism (VCD), infrared, and Raman spectra are obtained for the iron complexes uncoordinated and coordinated with the gas moieties. The sensor is capable of detecting the ligands to different extents. Carbon monoxide is less detectable than nitric oxide due to the adopted position of the molecule in the sensor; carbon oxide is aligned with the iron atom, while nitric oxide and molecular oxygens bend with an angle detectable by the VCD. It is suggested that pollutants may be detected and measured with the proposed biosensors
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14 March 2009
Research Article|
March 09 2009
Molecular biosensor based on a coordinated iron complex
Karim Salazar-Salinas;
Karim Salazar-Salinas
1Department of Chemical Engineering,
Texas A&M University
, College Station, Texas 77843-3122, USA
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Luis A. Jauregui;
Luis A. Jauregui
1Department of Chemical Engineering,
Texas A&M University
, College Station, Texas 77843-3122, USA
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Carlos Kubli-Garfias;
Carlos Kubli-Garfias
a)
1Department of Chemical Engineering,
Texas A&M University
, College Station, Texas 77843-3122, USA
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Jorge M. Seminario
Jorge M. Seminario
b)
1Department of Chemical Engineering,
Texas A&M University
, College Station, Texas 77843-3122, USA
2Department of Electrical and Computer Engineering,
Texas A&M University
, College Station, Texas 77843-3122, USA
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a)
Permanent address: Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico.
b)
Electronic mail: [email protected].
J. Chem. Phys. 130, 105101 (2009)
Article history
Received:
October 06 2008
Accepted:
December 22 2008
Citation
Karim Salazar-Salinas, Luis A. Jauregui, Carlos Kubli-Garfias, Jorge M. Seminario; Molecular biosensor based on a coordinated iron complex. J. Chem. Phys. 14 March 2009; 130 (10): 105101. https://doi.org/10.1063/1.3070235
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