- EMDB-47946: 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-47946
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 / ROBO receptors bind AKAP5 / PKA activation in glucagon signalling / DARPP-32 events / CREB1 phosphorylation through the activation of Adenylate Cyclase / GPER1 signaling / HDL assembly / Factors involved in megakaryocyte development and platelet production / channel activator activity ...PKA-mediated phosphorylation of CREB / PKA-mediated phosphorylation of key metabolic factors / ROBO receptors bind AKAP5 / PKA activation in glucagon signalling / DARPP-32 events / CREB1 phosphorylation through the activation of Adenylate Cyclase / GPER1 signaling / HDL assembly / Factors involved in megakaryocyte development and platelet production / channel activator activity / PKA activation / mitochondrial protein catabolic process / Regulation of glycolysis by fructose 2,6-bisphosphate metabolism / Hedgehog 'off' state / cell communication by electrical coupling involved in cardiac conduction / high-density lipoprotein particle assembly / nucleotide-activated protein kinase complex / Rap1 signalling / potassium channel inhibitor activity / cAMP-dependent protein kinase inhibitor activity / histone H1-4S35 kinase activity / cAMP-dependent protein kinase / regulation of protein processing / cAMP-dependent protein kinase activity / cellular response to parathyroid hormone stimulus / protein localization to lipid droplet / negative regulation of interleukin-2 production / regulation of bicellular tight junction assembly / cAMP-dependent protein kinase complex / Loss of phosphorylation of MECP2 at T308 / sarcomere organization / CREB1 phosphorylation through the activation of Adenylate Cyclase / dorsal/ventral neural tube patterning / PKA activation / Triglyceride catabolism / regulation of osteoblast differentiation / negative regulation of activated T cell proliferation / sperm capacitation / cellular response to cold / 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 / protein kinase A regulatory subunit binding / negative regulation of glycolytic process through fructose-6-phosphate / protein kinase A catalytic subunit binding / intracellular potassium ion homeostasis / RET signaling / mesoderm formation / Interleukin-3, Interleukin-5 and GM-CSF signaling / immunological synapse / PKA activation in glucagon signalling / Regulation of MECP2 expression and activity / sperm head-tail coupling apparatus / regulation of cardiac conduction / plasma membrane raft / DARPP-32 events / regulation of macroautophagy / cardiac muscle cell proliferation / axoneme / cAMP/PKA signal transduction / regulation of cardiac muscle contraction / sperm flagellum / postsynaptic modulation of chemical synaptic transmission / cAMP binding / vascular endothelial cell response to laminar fluid shear stress / renal water homeostasis / negative regulation of cAMP/PKA signal transduction / Hedgehog 'off' state / Ion homeostasis / multivesicular body / negative regulation of protein localization to chromatin / negative regulation of TORC1 signaling / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / regulation of proteasomal protein catabolic process / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / protein serine/threonine/tyrosine kinase activity / Recruitment of mitotic centrosome proteins and complexes / cellular response to epinephrine stimulus / protein export from nucleus / calcium channel complex / CD209 (DC-SIGN) signaling / cellular response to glucagon stimulus / Recruitment of NuMA to mitotic centrosomes / Mitochondrial protein degradation / Anchoring of the basal body to the plasma membrane / positive regulation of calcium-mediated signaling / FCGR3A-mediated IL10 synthesis / positive regulation of phagocytosis / regulation of heart rate / positive regulation of gluconeogenesis / acrosomal vesicle / AURKA Activation by TPX2 / positive regulation of protein export from nucleus / regulation of microtubule cytoskeleton organization / negative regulation of smoothened signaling pathway / neural tube closure / neuromuscular junction / Regulation of insulin secretion / cellular response to glucose stimulus 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.