Table 1.

Hemoglobin properties before and after oxygenation


Property

Deoxygenated

Oxygenated
Fe-NO Hb, μM   3.7 ± 0.2   4.3 ± 0.5  
SNO-Hb, μM   0.66 ± 0.08   0.56 ± 0.10  
HbO2/total Hb, %   0.1 ± 0.2   97.2 ± 1.6  
DeoxyHb/total Hb, %   99.4 ± 0.2   2.8 ± 1.6  
MetHb/total Hb, %   0.6 ± 0.2   0.0 ± 0.0  
β-Nitrosyl Hb*, %   50 ± 3   45 ± 6  
Pentacoordinate α-nitrosyl Hb*, %
 
24 ± 3
 
0.3 ± 0.4
 

Property

Deoxygenated

Oxygenated
Fe-NO Hb, μM   3.7 ± 0.2   4.3 ± 0.5  
SNO-Hb, μM   0.66 ± 0.08   0.56 ± 0.10  
HbO2/total Hb, %   0.1 ± 0.2   97.2 ± 1.6  
DeoxyHb/total Hb, %   99.4 ± 0.2   2.8 ± 1.6  
MetHb/total Hb, %   0.6 ± 0.2   0.0 ± 0.0  
β-Nitrosyl Hb*, %   50 ± 3   45 ± 6  
Pentacoordinate α-nitrosyl Hb*, %
 
24 ± 3
 
0.3 ± 0.4
 

Total Hb = 5.2 ± 0.1 mM. Total NO/Hb = 0.00085 ± 0.00005. Data shown as average of 7 trials from 2 samples deoxygenated on different days ± SD. Percentage of hexacoordinate α-nitrosyl Hb is equal to that of 100% minus the sum of the β-nitrosyl Hb and pentacoordinate α-nitrosyl Hb.

*

Compared to total nitrosyl Hb.

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