Malaisse V J, Anjaneyulu K, Anjaneyulu R, Couturier E
Mol Cell Biochem. 1980 Apr 18;30(2):67-70. doi: 10.1007/BF00227919.
In an artificial system, the ionophore A23187, which transports Ca2+ but not Na+, is able to mediate the uphill translocation of Ca2+ from one aqueous medium to another across an organic immiscible phase, provided that a Na+, Li+ or H+ gradient is imposed on the system. Therefore, in the process known as Na-Ca countertransport, the downhill influx of Na+ may not be necessary for causing Ca2+ extrusion against its electrochemical gradient.
在一个人工系统中，能转运Ca2+而不转运Na+的离子载体A23187，能够介导Ca2+从一种水相介质穿过一个不混溶的有机相向上坡方向转运到另一种水相介质中，前提是该系统存在Na+、Li+或H+梯度。因此，在所谓的钠钙逆向转运过程中，Na+的下坡内流对于促使Ca2+逆其电化学梯度排出可能并非必要条件。
