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AQP3 Q92482

水通道蛋白-3 (AQP-3) (水甘油通道蛋白-3)

蛋白质信息 (UniProt)

水通道蛋白-3 (AQP-3) (水甘油通道蛋白-3)

Q92482

功能描述

水甘油通道蛋白形成同源四聚体跨膜通道,每个单体独立地沿着渗透梯度介导甘油和水跨质膜转运 (PubMed:12239222, PubMed:30420639)。可能对尿素也具有通透性 (By similarity)。还参与细胞对H2O2的通透性以及H2O2介导的信号传导 (PubMed:20724658)。在皮肤中,将甘油转运至表皮和角质层,在那里维持水合作用、弹性,并支持用于屏障修复的脂质生物合成 (By similarity)。在肾脏中,有助于水的重吸收,帮助身体维持适当的体液平衡 (By similarity)。 {ECO:0000250|UniProtKB:P47862, ECO:0000250|UniProtKB:Q8R2N1, ECO:0000269|PubMed:12239222, ECO:0000269|PubMed:20724658, ECO:0000269|PubMed:30420639}。

组织特异性

Widely expressed in epithelial cells of kidney (collecting ducts) and airways, in keratinocytes, immature dendritic cells and erythrocytes. Isoform 2 is not detectable in erythrocytes at the protein level.

亚细胞定位

Cell membrane

关键词

Alternative splicing Blood group antigen Cell membrane Glycoprotein Membrane Proteomics identification Reference proteome Repeat Transmembrane Transmembrane helix