Low oxygen affinity mutant hemoglobins

   
   

Non-naturally occurring mutant hemoglobins rHb (.beta.N108Q) and rHb (.beta.L105W) are provided that have a lower oxygen affinity than that of native hemoglobin, but high cooperativity in oxygen binding. rHb (.beta.N108Q) also exhibits enhanced stability against autoxidation. The mutant hemoglobins are preferably produced by recombinant DNA techniques. Such mutant hemoglobins may be used as a component of a blood substitute and hemoglobin therapeutics.

El rHb de los hemoglobins del mutante de Non-naturally que ocurre (beta.N108Q) y el rHb (beta.L105W) son a condición de que tenga una afinidad más baja del oxígeno que el de la hemoglobina nativa, solamente cooperativity alto en oxígeno que el rHb obligatorio (beta.N108Q) también exhibe estabilidad realzada contra la autoxidación. Los hemoglobins del mutante son producidos preferiblemente por técnicas recombinant de la DNA. Tales hemoglobins del mutante se pueden utilizar como un componente de una terapéutica del substituto y de la hemoglobina de la sangre.

 
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