- EMDB-11467: Atomic model of the EM-based structure of the full-length tyrosin... -
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基本情報
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データベース: EMDB / ID: EMD-11467
タイトル
Atomic model of the EM-based structure of the full-length tyrosine hydroxylase in complex with dopamine (residues 40-497) in which the regulatory domain (residues 40-165) has been included only with the backbone atoms
マップデータ
試料
複合体: Tyrosine Hydroxylase in complex with dopamine
タンパク質・ペプチド: Tyrosine 3-monooxygenase
リガンド: FE (III) ION
リガンド: L-DOPAMINE
機能・相同性
機能・相同性情報
tyrosine 3-monooxygenase / tyrosine 3-monooxygenase activity / dopamine biosynthetic process from tyrosine / embryonic camera-type eye morphogenesis / epinephrine biosynthetic process / Catecholamine biosynthesis / norepinephrine biosynthetic process / hyaloid vascular plexus regression / eye photoreceptor cell development / melanosome membrane ...tyrosine 3-monooxygenase / tyrosine 3-monooxygenase activity / dopamine biosynthetic process from tyrosine / embryonic camera-type eye morphogenesis / epinephrine biosynthetic process / Catecholamine biosynthesis / norepinephrine biosynthetic process / hyaloid vascular plexus regression / eye photoreceptor cell development / melanosome membrane / synaptic transmission, dopaminergic / mating behavior / eating behavior / dopamine biosynthetic process / pigmentation / regulation of heart contraction / smooth endoplasmic reticulum / anatomical structure morphogenesis / heart morphogenesis / visual perception / animal organ morphogenesis / learning / locomotory behavior / memory / cytoplasmic side of plasma membrane / synaptic vesicle / heart development / cytoplasmic vesicle / response to ethanol / perikaryon / response to hypoxia / neuron projection / iron ion binding / axon / perinuclear region of cytoplasm / enzyme binding / identical protein binding / nucleus / cytosol / cytoplasm 類似検索 - 分子機能
Spanish Ministry of Science, Innovation, and Universities
PID2019-105872GB-I00
スペイン
引用
ジャーナル: Nat Commun / 年: 2022 タイトル: Structural mechanism for tyrosine hydroxylase inhibition by dopamine and reactivation by Ser40 phosphorylation. 著者: María Teresa Bueno-Carrasco / Jorge Cuéllar / Marte I Flydal / César Santiago / Trond-André Kråkenes / Rune Kleppe / José R López-Blanco / Miguel Marcilla / Knut Teigen / Sara Alvira / ...著者: María Teresa Bueno-Carrasco / Jorge Cuéllar / Marte I Flydal / César Santiago / Trond-André Kråkenes / Rune Kleppe / José R López-Blanco / Miguel Marcilla / Knut Teigen / Sara Alvira / Pablo Chacón / Aurora Martinez / José M Valpuesta / 要旨: Tyrosine hydroxylase (TH) catalyzes the rate-limiting step in the biosynthesis of dopamine (DA) and other catecholamines, and its dysfunction leads to DA deficiency and parkinsonisms. Inhibition by ...Tyrosine hydroxylase (TH) catalyzes the rate-limiting step in the biosynthesis of dopamine (DA) and other catecholamines, and its dysfunction leads to DA deficiency and parkinsonisms. Inhibition by catecholamines and reactivation by S40 phosphorylation are key regulatory mechanisms of TH activity and conformational stability. We used Cryo-EM to determine the structures of full-length human TH without and with DA, and the structure of S40 phosphorylated TH, complemented with biophysical and biochemical characterizations and molecular dynamics simulations. TH presents a tetrameric structure with dimerized regulatory domains that are separated 15 Å from the catalytic domains. Upon DA binding, a 20-residue α-helix in the flexible N-terminal tail of the regulatory domain is fixed in the active site, blocking it, while S40-phosphorylation forces its egress. The structures reveal the molecular basis of the inhibitory and stabilizing effects of DA and its counteraction by S40-phosphorylation, key regulatory mechanisms for homeostasis of DA and TH.