Due to the nature of amphotericity and the conformation of plasma membrane, large or ionic molecules can not permeate through plasma membrane freely. To help with those transportations, protein involved transports are adopted. One of which is active transport, that uses energy to move substrates against electrochemical gradient. Among many active transport cases, sodium potassium transportation has been most widely studied for it is expressed in virtually all cells of higher organisms (Austgen 2003). The Na,…
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…molecules/sodium_pump.html. Delamere, N. A. 2003. Regulation of Na,K-ATPase function in the lens. Journal of Experimental Zoology Part A-Comparative Experimental Biology 300A (1): 25-29. Kaplan, J. H. 2002. Biochemistry of Na, K-ATPase. Annual Review of Biochemistry 71 (1): 511-535. Takahashi, Y. Suzuki, T. Sakai. H Maeda, M. Horikawa, N. Minamimara, T and Tsukada, K. Lower expression of Na+,K+-ATPase α1-isoform in human colorectal cancer. http://www.physoc.org/publications/proceedings/archive/article.asp?ID=555PPC80