Na+/H+ exchangerNHXOne important mechanism plants use to cope with salinity is keeping the cytosolic Na+ concentration low by sequestering Na+ in vacuoles, a process facilitated by Na+/H+ exchangers (NHX). There are eight NHX genes (NHX1 through NHX8) identified and characterized in ...
分析Na+/H+逆向转运蛋白氨基酸序列的亲水性图谱包括N末端的跨膜区域和C末端的胞质区域,前者对氨氯吡嗪脒(amiloride)及其衍生物敏感,是负责转运的区域,由9-12个跨膜结构域组成,这段序列在其他植物 NHX以及哺乳动物NHE中均高度保守Na+/H+ 逆向转运蛋白 耐盐性 调控机理在干旱、半干旱地区,土壤表面盐分积累造成土壤...
植物 Na+,K+/H+ 反向 转运体是位于细胞膜结构上的跨膜反向转运蛋白,介导 Na+,K+ 与质子(H+)的跨膜反向转运,影响胞内 pH 的动态平衡.研究表 明,NHX 缺失造成细胞 pH 失衡的同时,将影响囊泡运输,从而对生长发育产生不利影响.主要对植物 NHX 在 pH 调节,囊泡运 输中的功能进展进行了概述,并对其关系...
迄今, 离子区域化酶类基因, 尤其是Na+/H+逆向转运蛋白基因SOS(salt overly sensitive)的克隆和功能分析, 是植物耐盐分子机制研究的热点。Gaxiola等[20]从拟南芥克隆到一个液泡膜Na+/H+逆向转运蛋白基因AtNHX1 (Na+/H+exchanger, NHX), 发现该基因与拟南芥H+-PPase基因AVP1(Arabidopis thaliana vacuolar-type...
Na+/H+ exchanger catalyzes the countertransport of Na+ and H+ across membranes. We isolated a rice cDNA clone the deduced amino acid sequence of which had homology with a putative Na+/H+ exchanger in Saccharomyces cerevisiae, NHX1. The sequence contains 2330 bp with an open reading frame ...
Na[sup +]/H[sup +] exchangers are involved in cell volume regulation, fluid secretion and absorption, and pH homeostasis. NHX-2 is a Caenorhabditis elegans Na[sup +]/H[sup +] exchanger expressed exclusively at the apical membrane of intestinal epithelial cells. The inactivation of various int...
KLH-conjugated synthetic peptide derived from Arabidopsis thaliana NHX protein UniProt: Q68KI4, TAIR: At5g27150; chosen peptide is perfectly confirmed in AtNHX1 UniProt: Q0WVZ5, partially in AtNHX2, UniProt: Q56XP4, and not conserved in AtNHX3, UniProt: Q84WG1 and AtNHX4, UniProt:Q8...
2.4 离子转运载体与SOS1协同调节离子稳态平衡 盐胁迫下,植物通过激活多种信号通路和离子 转运体来调控离子动态平衡[69, 96],离子转运体如 NHX,AKT1 和 HKT 与 SOS1 协同调节离子稳态平衡. 当植物将胞质 Na+ 水平保持在 10-50 mmol/L 时,首 先是通过质膜 H+‑ATPase 产生质子动力驱动 SOS1, 将胞质中 ...
In this study, we generated transgenic tomato plants over-expressing a Na(+)-K(+)/H(+) exchanger gene (TNHXS1), singly or with H(+)-pyrophosphatase (H(+)-PPiase) gene using a bicistronic construct. Transgenic tomato lines co-expressing both genes (LNV) significantly showed higher ...
关键词:Na+/H+逆向转运蛋白AtNHXSOS1 DOI: 分类号: 基金项目:国家自然科学基金(30170667)资助~~ Abstract: Key words: 参考文献(共46条): [1]Aharon G S,Apse M P,Duan S,et al.2003. Characterization of a family of vacuolar Na+/H+ antiporters in Arabidopsis thaliana[J].Plant Soil,253:45-25...