Beta/Mu-diguetoxin-1 / Spider Toxins mu-diguetoxin-1 a, b and c / Voltage-dependent L-type calcium channel, IQ-associated domain / Voltage-dependent L-type calcium channel, IQ-associated / Voltage gated sodium channel, alpha subunit / Voltage-gated cation channel calcium and sodium / Voltage-dependent channel domain superfamily / Ion transport domain / Ion transport protein 類似検索 - ドメイン・相同性
Sodium channel protein PaFPC1 / Beta-diguetoxin-Dc1a 類似検索 - 構成要素
生物種
Periplaneta americana (ワモンゴキブリ) / Diguetia canities (クモ)
National Health and Medical Research Council (Australia)
APP1072113
オーストラリア
引用
ジャーナル: Science / 年: 2018 タイトル: Structural basis for the modulation of voltage-gated sodium channels by animal toxins. 著者: Huaizong Shen / Zhangqiang Li / Yan Jiang / Xiaojing Pan / Jianping Wu / Ben Cristofori-Armstrong / Jennifer J Smith / Yanni K Y Chin / Jianlin Lei / Qiang Zhou / Glenn F King / Nieng Yan / 要旨: Animal toxins that modulate the activity of voltage-gated sodium (Na) channels are broadly divided into two categories-pore blockers and gating modifiers. The pore blockers tetrodotoxin (TTX) and ...Animal toxins that modulate the activity of voltage-gated sodium (Na) channels are broadly divided into two categories-pore blockers and gating modifiers. The pore blockers tetrodotoxin (TTX) and saxitoxin (STX) are responsible for puffer fish and shellfish poisoning in humans, respectively. Here, we present structures of the insect Na channel NaPaS bound to a gating modifier toxin Dc1a at 2.8 angstrom-resolution and in the presence of TTX or STX at 2.6-Å and 3.2-Å resolution, respectively. Dc1a inserts into the cleft between VSD and the pore of NaPaS, making key contacts with both domains. The structures with bound TTX or STX reveal the molecular details for the specific blockade of Na access to the selectivity filter from the extracellular side by these guanidinium toxins. The structures shed light on structure-based development of Na channel drugs.
全体 : complex of voltage-gated sodium channel NavPaS from American cock...
全体
名称: complex of voltage-gated sodium channel NavPaS from American cockroach Periplaneta americana and Dc1a
要素
複合体: complex of voltage-gated sodium channel NavPaS from American cockroach Periplaneta americana and Dc1a
複合体: voltage-gated sodium channel NavPaS from American cockroach Periplaneta americana
タンパク質・ペプチド: Sodium channel protein PaFPC1
複合体: Dc1a
タンパク質・ペプチド: Mu-diguetoxin-Dc1a
リガンド: 2-acetamido-2-deoxy-beta-D-glucopyranose
リガンド: SODIUM ION
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超分子 #1: complex of voltage-gated sodium channel NavPaS from American cock...
超分子
名称: complex of voltage-gated sodium channel NavPaS from American cockroach Periplaneta americana and Dc1a タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#2
分子量
理論値: 200 KDa
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超分子 #2: voltage-gated sodium channel NavPaS from American cockroach Perip...
超分子
名称: voltage-gated sodium channel NavPaS from American cockroach Periplaneta americana タイプ: complex / ID: 2 / 親要素: 1 / 含まれる分子: #1