Cloning and Characterization of a Na+-driven Anion Exchanger (NDAE1)
Cloning and Characterization of a Na+-driven Anion Exchanger (NDAE1)
复制标题
Na 驱动阴离子交换剂 (NDAE1) 的克隆和表征
DOI:
--
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发表时间:
2000
影响因子:
4.8
通讯作者:
Christopher M. Sciortino
中科院分区:
文献类型:
--
作者:
M. Romero;Darin Henry;S. Nelson;P. Harte;Alison K. Dillon;Christopher M. Sciortino
Regulation of intra- and extracellular ion activities (e.g. H+, Cl−, Na+) is key to normal function of the central nervous system, digestive tract, respiratory tract, and urinary system. With our cloning of an electrogenic Na+/HCO3 − cotransporter (NBC), we found that NBC and the anion exchangers form a bicarbonate transporter superfamily. Functionally three other HCO3 −transporters are known: a neutral Na+/ HCO3 − cotransporter, a K+/ HCO3 − cotransporter, and a Na+-dependent Cl−-HCO3 − exchanger. We report the cloning and characterization of a Na+-coupled Cl−-HCO3 − exchanger and a physiologically unique bicarbonate transporter superfamily member. ThisDrosophila cDNA encodes a 1030-amino acid membrane protein with both sequence homology and predicted topology similar to the anion exchangers and NBCs. The mRNA is expressed throughoutDrosophila development and is prominent in the central nervous system. When expressed in Xenopus oocytes, this membrane protein mediates the transport of Cl−, Na+, H+, and HCO3 − but does not require HCO3 −. Transport is blocked by the stilbene 4,4′-diisothiocyanodihydrostilbene- 2,2′-disulfonates and may not be strictly electroneutral. Our functional data suggest thisNa+ driven anionexchanger (NDAE1) is responsible for the Na+-dependent Cl−-HCO3 − exchange activity characterized in neurons, kidney, and fibroblasts. NDAE1 may be generally important for fly development, because disruption of this gene is apparently lethal to the Drosophila larva.
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DOI:
--
发表时间:
1994
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Kaplan,DL;Boron,WF
通讯作者:
Boron,WF
影响因子:
2.6
作者:
Tse, Leonard W.;Lindsay, Thomas F.;Tan, Kong Teng
通讯作者:
Tan, Kong Teng
影响因子:
2.7
作者:
COX, KH;DELEON, DV;ANGERER, RC
通讯作者:
ANGERER, RC
DOI:
10.1152/ajpcell.1994.266.5.c1357
发表时间:
1994
期刊:
The American journal of physiology
影响因子:
--
作者:
Ganz,MB;Nee,JJ;Isales,CM;Barrett,PQ
通讯作者:
Barrett,PQ
DOI:
--
发表时间:
1988
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Cassel,D;Scharf,O;Rotman,M;CragoeJr,EJ;Katz,M
通讯作者:
Katz,M