- EMDB-47944: Reset Type-I Protein Kinase A Holoenzyme -
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基本情報
登録情報
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 / HDL assembly / PKA activation in glucagon signalling / DARPP-32 events / CREB1 phosphorylation through the activation of Adenylate Cyclase / GPER1 signaling / channel activator activity ...PKA-mediated phosphorylation of CREB / PKA-mediated phosphorylation of key metabolic factors / sperm head-tail coupling apparatus / ROBO receptors bind AKAP5 / HDL assembly / PKA activation in glucagon signalling / DARPP-32 events / CREB1 phosphorylation through the activation of Adenylate Cyclase / GPER1 signaling / channel activator activity / 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 / negative regulation of cAMP/PKA signal transduction / cAMP-dependent protein kinase inhibitor activity / cAMP-dependent protein kinase / regulation of protein processing / cAMP-dependent protein kinase activity / sarcomere organization / protein localization to lipid droplet / cAMP-dependent protein kinase complex / regulation of bicellular tight junction assembly / cellular response to parathyroid hormone stimulus / Loss of phosphorylation of MECP2 at T308 / negative regulation of interleukin-2 production / CREB1 phosphorylation through the activation of Adenylate Cyclase / PKA activation / regulation of osteoblast differentiation / cellular response to cold / sperm capacitation / negative regulation of glycolytic process through fructose-6-phosphate / Triglyceride catabolism / ciliary base / High laminar flow shear stress activates signaling by PIEZO1 and PECAM1:CDH5:KDR in endothelial cells / Vasopressin regulates renal water homeostasis via Aquaporins / protein kinase A regulatory subunit binding / negative regulation of activated T cell proliferation / protein kinase A catalytic subunit binding / intracellular potassium ion homeostasis / mesoderm formation / RET signaling / cAMP/PKA signal transduction / Interleukin-3, Interleukin-5 and GM-CSF signaling / immunological synapse / plasma membrane raft / PKA activation in glucagon signalling / Regulation of MECP2 expression and activity / axoneme / DARPP-32 events / regulation of cardiac conduction / regulation of macroautophagy / cardiac muscle cell proliferation / regulation of cardiac muscle contraction / sperm flagellum / postsynaptic modulation of chemical synaptic transmission / regulation of cardiac muscle contraction by regulation of the release of sequestered calcium ion / vascular endothelial cell response to laminar fluid shear stress / renal water homeostasis / cAMP binding / Hedgehog 'off' state / Ion homeostasis / negative regulation of TORC1 signaling / sperm midpiece / regulation of proteasomal protein catabolic process / multivesicular body / cellular response to epinephrine stimulus / calcium channel complex / positive regulation of gluconeogenesis / Mitochondrial protein degradation / protein serine/threonine/tyrosine kinase activity / cellular response to glucagon stimulus / Loss of Nlp from mitotic centrosomes / Loss of proteins required for interphase microtubule organization from the centrosome / Recruitment of mitotic centrosome proteins and complexes / acrosomal vesicle / CD209 (DC-SIGN) signaling / positive regulation of calcium-mediated signaling / Recruitment of NuMA to mitotic centrosomes / FCGR3A-mediated IL10 synthesis / regulation of heart rate / Anchoring of the basal body to the plasma membrane / positive regulation of phagocytosis / protein export from nucleus / AURKA Activation by TPX2 / positive regulation of protein export from nucleus / negative regulation of smoothened signaling pathway / neural tube closure / Regulation of insulin secretion / neuromuscular junction / cellular response to glucose stimulus / Degradation of GLI1 by the proteasome / positive regulation of cholesterol biosynthetic process / Degradation of GLI2 by the proteasome / GLI3 is processed to GLI3R by the proteasome 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. / cAMP-dependent protein kinase catalytic subunit / Cyclic nucleotide-binding domain signature 1. / 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. / cAMP-dependent protein kinase catalytic subunit / Cyclic nucleotide-binding domain signature 1. / 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.