Title : rOCT2 is a basolateral potential-driven carrier, not an organic cation/proton exchanger.

Pub. Date : 1999 Dec

PMID : 10600936






4 Functional Relationships(s)
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1 In rOCT2 cRNA-injected oocytes, uptake of [14C]TEA was saturable, with an estimated Michaelis constant (Km) of 393 microM, and was specifically inhibited by organic cations. Tetraethylammonium solute carrier family 22 member 2 Rattus norvegicus
2 Consistent with the potential sensitivity of uptake, electrophysiological analysis of rOCT2-injected oocytes demonstrated movement of positive charge into the oocyte upon TEA addition. Tetraethylammonium solute carrier family 22 member 2 Rattus norvegicus
3 A stably transfected single cell clone (MDCK-rOCT2) showed mediated, potential-sensitive, pH-sensitive TEA uptake (Km = 48 microM). Tetraethylammonium solute carrier family 22 member 2 Rattus norvegicus
4 TEA efflux from preloaded MDCK-rOCT2 cells was stimulated by externally applied (trans) tetramethylammonium but was trans-inhibited by H+ (external pH 5.4). Tetraethylammonium solute carrier family 22 member 2 Rattus norvegicus