タンパク質・ペプチド: Transient Receptor Potential Cation Channel Subfamily C Member 3
キーワード
TRP channel / Ion Channel / Membrane protein / cerebellum / moonwalker / TRANSPORT PROTEIN
機能・相同性
機能・相同性情報
positive regulation of cardiac muscle hypertrophy in response to stress / Role of second messengers in netrin-1 signaling / store-operated calcium channel activity / Elevation of cytosolic Ca2+ levels / Effects of PIP2 hydrolysis / cation channel complex / inositol 1,4,5 trisphosphate binding / calcium-activated cation channel activity / TRP channels / positive regulation of calcium ion transport into cytosol ...positive regulation of cardiac muscle hypertrophy in response to stress / Role of second messengers in netrin-1 signaling / store-operated calcium channel activity / Elevation of cytosolic Ca2+ levels / Effects of PIP2 hydrolysis / cation channel complex / inositol 1,4,5 trisphosphate binding / calcium-activated cation channel activity / TRP channels / positive regulation of calcium ion transport into cytosol / response to ATP / phototransduction / single fertilization / MECP2 regulates neuronal receptors and channels / regulation of cytosolic calcium ion concentration / calcium ion transmembrane transport / calcium channel activity / response to calcium ion / calcium ion transport / metal ion binding / plasma membrane 類似検索 - 分子機能
Transient receptor potential channel, canonical 3 / Transient receptor ion channel II / Transient receptor ion channel domain / Transient receptor ion channel II / Transient receptor potential channel, canonical / Ankyrin repeats (3 copies) / Ankyrin repeat region circular profile. / ankyrin repeats / Ankyrin repeat / Ankyrin repeat-containing domain superfamily ...Transient receptor potential channel, canonical 3 / Transient receptor ion channel II / Transient receptor ion channel domain / Transient receptor ion channel II / Transient receptor potential channel, canonical / Ankyrin repeats (3 copies) / Ankyrin repeat region circular profile. / ankyrin repeats / Ankyrin repeat / Ankyrin repeat-containing domain superfamily / Ion transport domain / Ion transport protein 類似検索 - ドメイン・相同性
Short transient receptor potential channel 3 類似検索 - 構成要素
National Institutes of Health/Eunice Kennedy Shriver National Institute of Child Health & Human Development (NIH/NICHD)
R01HD061543
米国
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)
R01GM125629
米国
引用
ジャーナル: J Biol Chem / 年: 2018 タイトル: Structure-function analyses of the ion channel TRPC3 reveal that its cytoplasmic domain allosterically modulates channel gating. 著者: Francisco Sierra-Valdez / Caleigh M Azumaya / Luis O Romero / Terunaga Nakagawa / Julio F Cordero-Morales / 要旨: The transient receptor potential ion channels support Ca permeation in many organs, including the heart, brain, and kidney. Genetic mutations in transient receptor potential cation channel subfamily ...The transient receptor potential ion channels support Ca permeation in many organs, including the heart, brain, and kidney. Genetic mutations in transient receptor potential cation channel subfamily C member 3 (TRPC3) are associated with neurodegenerative diseases, memory loss, and hypertension. To better understand the conformational changes that regulate TRPC3 function, we solved the cryo-EM structures for the full-length human TRPC3 and its cytoplasmic domain (CPD) in the apo state at 5.8- and 4.0-Å resolution, respectively. These structures revealed that the TRPC3 transmembrane domain resembles those of other TRP channels and that the CPD is a stable module involved in channel assembly and gating. We observed the presence of a C-terminal domain swap at the center of the CPD where horizontal helices (HHs) transition into a coiled-coil bundle. Comparison of TRPC3 structures revealed that the HHs can reside in two distinct positions. Electrophysiological analyses disclosed that shortening the length of the C-terminal loop connecting the HH with the TRP helices increases TRPC3 activity and that elongating the length of the loop has the opposite effect. Our findings indicate that the C-terminal loop affects channel gating by altering the allosteric coupling between the cytoplasmic and transmembrane domains. We propose that molecules that target the HH may represent a promising strategy for controlling TRPC3-associated neurological disorders and hypertension.