we have compared the ph dependencies of the rate constants for the dissociation and combination of the fourth carbon monoxide molecule , l4 and l ' 4 , respectively , for native hemoglobin a ( hba ) and a control reconstituted hba , and des- ( arg 141 alpha ) hba , the hemoglobin molecule resulting from the enzymatic removal of the c-terminal arginine of the alpha-chain of human hb .
C0019016
hba
C0019046
hb