The sodium/hydrogen exchanger 9B1 (SLC9B1 aka Na+/H+ exchanger like domain containing 1, NHEDC1) is specifically expressed on the plasma membrane of the testis and may be implicated in infertility (Ye et al. 2006). Sodium/hydrogen exchanger 9C2 (SLC9C2), also localized to the plasma membrane, may be involved in pH regulation although this protein has not been fully characterized.
Yu, L, Chen, C, Han, D, Ye, G, Xiong, X, Wan, B, Kong, Y
sodium:proton antiporter activity of SLC9B1/C2 [plasma membrane]
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