- EMDB-47944: Reset Type-I Protein Kinase A Holoenzyme -
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基本情報
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データベース: EMDB / ID: EMD-47944
タイトル
Reset Type-I Protein Kinase A Holoenzyme
マップデータ
試料
複合体: Reset type-I PKA holoenzyme complex of regulatory and catalytic subunits
タンパク質・ペプチド: cAMP-dependent protein kinase catalytic subunit alpha
タンパク質・ペプチド: cAMP-dependent protein kinase type I-alpha regulatory subunit
リガンド: ADENOSINE-5'-TRIPHOSPHATE
キーワード
Kinase / Regulator / SIGNALING PROTEIN
機能・相同性
機能・相同性情報
PKA-mediated phosphorylation of CREB / PKA-mediated phosphorylation of key metabolic factors / sperm head-tail coupling apparatus / ROBO receptors bind AKAP5 / channel activator activity / HDL assembly / PKA activation in glucagon signalling / DARPP-32 events / CREB1 phosphorylation through the activation of Adenylate Cyclase / GPER1 signaling ...PKA-mediated phosphorylation of CREB / PKA-mediated phosphorylation of key metabolic factors / sperm head-tail coupling apparatus / ROBO receptors bind AKAP5 / channel activator activity / HDL assembly / PKA activation in glucagon signalling / DARPP-32 events / CREB1 phosphorylation through the activation of Adenylate Cyclase / GPER1 signaling / Factors involved in megakaryocyte development and platelet production / Regulation of glycolysis by fructose 2,6-bisphosphate metabolism / mitochondrial protein catabolic process / PKA activation / nucleotide-activated protein kinase complex / Hedgehog 'off' state / cell communication by electrical coupling involved in cardiac conduction / high-density lipoprotein particle assembly / Rap1 signalling / intracellular potassium ion homeostasis / negative regulation of cAMP/PKA signal transduction / cAMP-dependent protein kinase inhibitor activity / cAMP-dependent protein kinase / regulation of protein processing / sarcomere organization / Loss of phosphorylation of MECP2 at T308 / cardiac muscle cell proliferation / cAMP-dependent protein kinase activity / CREB1 phosphorylation through the activation of Adenylate Cyclase / protein localization to lipid droplet / PKA activation / cAMP-dependent protein kinase complex / regulation of bicellular tight junction assembly / cellular response to parathyroid hormone stimulus / negative regulation of interleukin-2 production / cellular response to cold / regulation of osteoblast differentiation / sperm capacitation / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Vasopressin regulates renal water homeostasis via Aquaporins / ciliary base / negative regulation of glycolytic process through fructose-6-phosphate / Triglyceride catabolism / protein kinase A regulatory subunit binding / protein kinase A catalytic subunit binding / negative regulation of activated T cell proliferation / mesoderm formation / cAMP/PKA signal transduction / RET signaling / Regulation of MECP2 expression and activity / sperm flagellum / Interleukin-3, Interleukin-5 and GM-CSF signaling / PKA activation in glucagon signalling / plasma membrane raft / immunological synapse / DARPP-32 events / axoneme / regulation of cardiac conduction / regulation of macroautophagy / regulation of cardiac muscle contraction / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / postsynaptic modulation of chemical synaptic transmission / vascular endothelial cell response to laminar fluid shear stress / renal water homeostasis / Hedgehog 'off' state / cAMP binding / positive regulation of phagocytosis / Ion homeostasis / negative regulation of TORC1 signaling / regulation of proteasomal protein catabolic process / cellular response to epinephrine stimulus / sperm midpiece / multivesicular body / calcium channel complex / Mitochondrial protein degradation / positive regulation of gluconeogenesis / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Recruitment of mitotic centrosome proteins and complexes / CD209 (DC-SIGN) signaling / protein serine/threonine/tyrosine kinase activity / cellular response to glucagon stimulus / Recruitment of NuMA to mitotic centrosomes / Anchoring of the basal body to the plasma membrane / FCGR3A-mediated IL10 synthesis / positive regulation of calcium-mediated signaling / regulation of heart rate / protein export from nucleus / acrosomal vesicle / AURKA Activation by TPX2 / positive regulation of protein export from nucleus / negative regulation of smoothened signaling pathway / Regulation of insulin secretion / neural tube closure / Degradation of GLI1 by the proteasome / positive regulation of cholesterol biosynthetic process / cellular response to glucose stimulus / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome / adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway 類似検索 - 分子機能
cAMP-dependent protein kinase regulatory subunit / cAMP-dependent protein kinase regulatory subunit, dimerization-anchoring domain / Regulatory subunit of type II PKA R-subunit / RIIalpha, Regulatory subunit portion of type II PKA R-subunit / : / Cyclic nucleotide-binding domain signature 2. / Cyclic nucleotide-binding domain signature 1. / cAMP-dependent protein kinase catalytic subunit / Cyclic nucleotide-binding, conserved site / Cyclic nucleotide-monophosphate binding domain ...cAMP-dependent protein kinase regulatory subunit / cAMP-dependent protein kinase regulatory subunit, dimerization-anchoring domain / Regulatory subunit of type II PKA R-subunit / RIIalpha, Regulatory subunit portion of type II PKA R-subunit / : / Cyclic nucleotide-binding domain signature 2. / Cyclic nucleotide-binding domain signature 1. / cAMP-dependent protein kinase catalytic subunit / Cyclic nucleotide-binding, conserved site / Cyclic nucleotide-monophosphate binding domain / Cyclic nucleotide-binding domain / cAMP/cGMP binding motif profile. / Cyclic nucleotide-binding domain / Cyclic nucleotide-binding domain superfamily / Extension to Ser/Thr-type protein kinases / AGC-kinase, C-terminal / AGC-kinase C-terminal domain profile. / RmlC-like jelly roll fold / Serine/threonine-protein kinase, active site / Serine/Threonine protein kinases active-site signature. / Protein kinase domain / Serine/Threonine protein kinases, catalytic domain / Protein kinase, ATP binding site / Protein kinases ATP-binding region signature. / Protein kinase domain profile. / Protein kinase domain / Protein kinase-like domain superfamily 類似検索 - ドメイン・相同性
cAMP-dependent protein kinase type I-alpha regulatory subunit / cAMP-dependent protein kinase catalytic subunit alpha 類似検索 - 構成要素
ジャーナル: J Am Chem Soc / 年: 2025 タイトル: Multiplicity of Regulatory Subunit Conformations Defines Structural Ensemble of Reset Protein Kinase A Holoenzyme. 著者: Varun Venkatakrishnan / Tatiana N Laremore / Theresa S C Buckley / Jean-Paul Armache / Ganesh S Anand / 要旨: How protein kinase A (PKA) is reset to a basal state following 3'5'-cyclic adenosine monophosphate (cAMP)-mediated activation is unknown. Here we describe the mechanism of cAMP-PKA type I signal ...How protein kinase A (PKA) is reset to a basal state following 3'5'-cyclic adenosine monophosphate (cAMP)-mediated activation is unknown. Here we describe the mechanism of cAMP-PKA type I signal termination leading to a reset of PKA by holoenzyme formation through the obligatory action of phosphodiesterases (PDEs). We report a catalytic subunit (Cα)-assisted mechanism for the reset of type I PKA and describe for the first time multiple structures of the reset PKA holoenzyme (RIα:Cα) that capture an ensemble of multiple conformational end-states through integrative electron microscopy and structural mass spectrometry approaches. Together these complementary methods highlight the large conformational dynamics of the regulatory subunit (RIα) within the tetrameric reset PKA holoenzyme. The cAMP-free reset PKA holoenzyme adopts multiple distinct conformations of RIα with contributions from the N-terminal linker and CNB-B dynamics. Our findings highlight the interplay between RIα, Cα, and PDEs (PDE8) in cAMP-PKA signalosomes to offer a new paradigm for PDE-mediated regulation of cAMP-PKA signaling.