it is suggested that although the high oxygen affinity hemoglobins ( hb lr ) ( beta 143 ( h21 ) his leads to gln ) with stabilization of r quaternary conformation is not more susceptible to the oxidizing effect of nitrites in vitro , in an in vivo situation where hemoglobin is partly deoxygenated , it might be more susceptible to methemoglobin formation due to higher oxidation and lower reduction rate .
C0019046
hemoglobin
C0025635
methemoglobin