NO preferentially binds to the minor population of the hemoglobin's vacant hemes in a cooperative manner, nitrosylates hemoglobin thiols, or reacts with liberated superoxide in solution. The distribution of minor forms of hemoglobin can be tested and the results can be used to predict whether a composition of hemoglobin will scavenge, load, eliminate, or donate NO. Hemoglobin thus serves to regulate the chemistry of NO. SNO-hemoglobin transfers NO equivalents to the red blood cell anion transport protein AE1, which serves to export NO from red blood cells. Regulation of AE1 function is the basis for methods of therapy to affect levels of NO or its biological equivalent.
NO 优先以合作的方式与血红蛋白空位赫的次要群体结合,亚硝基化血红蛋白
硫醇,或与溶液中释放的超氧化物反应。可以对血红蛋白次要形式的分布进行检测,并根据检测结果预测血红蛋白成分是否会清除、负载、消除或捐赠 NO。因此,血红蛋白具有调节 NO
化学性质的作用。SNO-血红蛋白将 NO 等价物转移到红细胞阴离子转运蛋白 AE1 上,后者的作用是将 NO 从红细胞中排出。调节 AE1 的功能是影响 NO 或其
生物等价物
水平的治疗方法的基础。