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Structure of human regulator of G protein signaling 2 (RGS2) in complex with murine Galpha-q(R183C)
Biology and Chemistry Report
4EKC
  •   Structure Details   Hide

    Structure Keywords

    Keywords SIGNALING PROTEIN/INHIBITOR
    Text GTP-binding protein fold, Regulator, G protein signaling, RGS, homology domain, GTPase activation, SIGNALING PROTEIN-INHIBITOR complex

    Polymeric Molecules

    Chain A,C
    Description Guanine nucleotide-binding protein G(q) subunit alpha 
    Fragment UNP residues 18-359 
    Mutation E125D, N126V, Y128D, V129Y, D130A, R183C 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 40634.6 
    Source Method genetically manipulated  
    Entity Name Guanine nucleotide-binding protein alpha-q 
    Chain B,D
    Description Regulator of G-protein signaling 2 
    Fragment RGS domain, UNP residues 72-203 
    Nonstandard Linkage no 
    Nonstandard Monomers no 
    Polymer Type polypeptide(L) 
    Formula Weight 15872.0 
    Source Method genetically manipulated  
    Entity Name RGS2, Cell growth-inhibiting gene 31 protein, G0/G1 switch regulatory protein 8 

    Ligands and Prosthetic Groups

    ID Name Chemical Formula Weight Ligand Structure
    ALF  TETRAFLUOROALUMINATE ION  Al F4   102.98  View 
    GDP  GUANOSINE-5'-DIPHOSPHATE  C10 H15 N5 O11 P2   443.20  View 
    MG  MAGNESIUM ION  Mg   24.31  View 
     
  •   Protein Details   Hide

    UniProtKB Information

    Chain SWS/UNP ID SWS/UNP Accession(s)
    A,C GNAQ_MOUSE P21279     
    B,D RGS2_HUMAN P41220     

    Keywords and Names

    Chain(s) RCSB Name UniProtKB Name UniProtKB Keywords

    EC, Associated Pathways and Catalytic Sites

    Chain(s) IUBMB KEGG BioCyc
    A C  3.6.5.1      
    C: Cellular Location | F: Molecular Function | P: Biological Process
    Chain A,C
    GO ID   Ontology GO Term Definition
    1501   Skeletal System Development  The Process Whose Specific Outcome Is the Progression of the Skeleton Over Time From Its Formation to the Mature Structure. the Skeleton Is the Bony Framework of the Body in Vertebrates (endoskeleton) or the Hard Outer Envelope of Insects (exoskeleton or Dermoskeleton). 
    1508   Action Potential  A Process in Which Membrane Potential Cycles Through a Depolarizing Spike Triggered in Response to Depolarization Above Some Threshold Followed by Repolarization. This Cycle Is Driven by the Flow of Ions Through Various Voltage Gated Channels with Different Thresholds and Ion Specificities. 
    6184   GTP Catabolic Process  The Chemical Reactions and Pathways Resulting in the Breakdown of GTP Guanosine Triphosphate. 
    6469   Negative Regulation of Protein Kinase Activity  Any Process That Stops Prevents or Reduces the Frequency Rate or Extent of Protein Kinase Activity. 
    7165   Signal Transduction  The Cellular Process in Which a Signal Is Conveyed to Trigger a Change in the Activity or State of a Cell. Signal Transduction Begins with Reception of a Signal (e.g. a Ligand Binding to a Receptor or Receptor Activation by a Stimulus Such As Light) or For Signal Transduction in the Absence of Ligand Signal Withdrawal or the Activity of a Constitutively Active Receptor. Signal Transduction Ends with Regulation of a Downstream Cellular Process E.g. Regulation of Transcription or Regulation of a Metabolic Process. Signal Transduction Covers Signaling From Receptors Located On the Surface of the Cell and Signaling Via Molecules Located Within the Cell. For Signaling Between Cells Signal Transduction Is Restricted to Events At and Within the Receiving Cell. 
    7186   G Protein Coupled Receptor Signaling Pathway  A Series of Molecular Signals That Proceeds with an Activated Receptor Promoting the Exchange of GDP For GTP On the Alpha Subunit of an Associated Heterotrimeric G Protein Complex. the GTP Bound Activated Alpha G Protein Then Dissociates From the Beta and Gamma Subunits to Further Transmit the Signal Within the Cell. the Pathway Begins with Receptor Ligand Interaction or For Basal Gpcr Signaling the Pathway Begins with the Receptor Activating Its G Protein in the Absence of an Agonist and Ends with Regulation of a Downstream Cellular Process E.g. Transcription. 
    7189   Adenylate Cyclase Activating G Protein Coupled Receptor Signaling Pathway  The Series of Molecular Signals Generated As a Consequence of a G Protein Coupled Receptor Binding to Its Physiological Ligand Where the Pathway Proceeds Through Activation of Adenylyl Cyclase Activity and a Subsequent Increase in the Concentration of Cyclic AMP (camp). 
    7215   Glutamate Receptor Signaling Pathway  A Series of Molecular Signals Initiated by the Binding of Glutamate to a Glutamate Receptor On the Surface of a Target Cell and Ending with Regulation of a Downstream Cellular Process E.g. Transcription. 
    7507   Heart Development  The Process Whose Specific Outcome Is the Progression of the Heart Over Time From Its Formation to the Mature Structure. the Heart Is a Hollow Muscular Organ Which by Contracting Rhythmically Keeps Up the Circulation of the Blood. 
    9791   Post Embryonic Development  The Process Whose Specific Outcome Is the Progression of the Organism Over Time From the Completion of Embryonic Development to the Mature Structure. See Embryonic Development. 
    16322   Neuron Remodeling  The Developmentally Regulated Remodeling of Neuronal Projections Such As Pruning to Eliminate the Extra Dendrites and Axons Projections Set Up in Early Stages of Nervous System Development. 
    21884   Forebrain Neuron Development  The Process Whose Specific Outcome Is the Progression of a Neuron That Resides in the Forebrain From Its Initial Commitment to Its Fate to the Fully Functional Differentiated Cell. 
    35412   Regulation of Catenin Import Into Nucleus  Any Process That Modulates the Rate Frequency or Extent of the Directed Movement of a Catenin Protein From the Cytoplasm Into the Nucleus. 
    42711   Maternal Behavior  Female Behaviors Associated with the Care and Rearing of Offspring. 
    42733   Embryonic Digit Morphogenesis  The Process Occurring in the Embryo by Which the Anatomical Structures of the Digit Are Generated and Organized. a Digit Is One of the Terminal Divisions of an Appendage Such As a Finger or Toe. 
    43547   Positive Regulation of Gtpase Activity  Any Process That Activates or Increases the Activity of a Gtpase. 
    45634   Regulation of Melanocyte Differentiation  Any Process That Modulates the Frequency Rate or Extent of Melanocyte Differentiation. 
    48066   Developmental Pigmentation  The Developmental Process That Results in the Deposition of Coloring Matter in an Organism Tissue or Cell. 
    50821   Protein Stabilization  Any Process Involved in Maintaining the Structure and Integrity of a Protein and Preventing It From Degradation or Aggregation. 
    60158   Phospholipase C Activating Dopamine Receptor Signaling Pathway  The Series of Molecular Signals Generated As a Consequence of a Dopamine Receptor Binding to Its Physiological Ligand Where the Pathway Proceeds with Activation of Phospholipase C (plc) and a Subsequent Release of Inositol Trisphosphate (ip3) and Diacylglycerol (dag). 
    5634   Nucleus  A Membrane Bounded Organelle of Eukaryotic Cells in Which Chromosomes Are Housed and Replicated. in Most Cells the Nucleus Contains All of the Cell's Chromosomes Except the Organellar Chromosomes and Is the Site of RNA Synthesis and Processing. in Some Species or in Specialized Cell Types RNA Metabolism or DNA Replication May Be Absent. 
    5765   Lysosomal Membrane  The Lipid Bilayer Surrounding the Lysosome and Separating Its Contents From the Cell Cytoplasm. 
    5834   Heterotrimeric G Protein Complex  Any of a Family of Heterotrimeric GTP Binding and Hydrolyzing Proteins; They Belong to a Superfamily of Gtpases That Includes Monomeric Proteins Such As Ef Tu and Ras. Heterotrimeric G Proteins Consist of Three Subunits; the Alpha Subunit Contains the Guanine Nucleotide Binding Site and Possesses Gtpase Activity; the Beta and Gamma Subunits Are Tightly Associated and Function As a Beta Gamma Heterodimer; Extrinsic Plasma Membrane Proteins (cytoplasmic Face) That Function As a Complex to Transduce Signals From G Protein Coupled Receptors to an Effector Protein. 
    5886   Plasma Membrane  The Membrane Surrounding a Cell That Separates the Cell From Its External Environment. It Consists of a Phospholipid Bilayer and Associated Proteins. 
    16020   Membrane  Double Layer of Lipid Molecules That Encloses All Cells and in Eukaryotes Many Organelles; May Be a Single or Double Lipid Bilayer; Also Includes Associated Proteins. 
    31965   Nuclear Membrane  Either of the Lipid Bilayers That Surround the Nucleus and Form the Nuclear Envelope; Excludes the Intermembrane Space. 
    70062   Extracellular Vesicular Exosome  A Membrane Bounded Vesicle That Is Released Into the Extracellular Region by Fusion of the Limiting Endosomal Membrane of a Multivesicular Body with the Plasma Membrane. 
    166   Nucleotide Binding  Interacting Selectively and Non Covalently with a Nucleotide Any Compound Consisting of a Nucleoside That Is Esterified with (ortho)phosphate or an Oligophosphate At Any Hydroxyl Group On the Ribose or Deoxyribose. 
    1664   G Protein Coupled Receptor Binding  Interacting Selectively and Non Covalently with a G Protein Coupled Receptor. 
    3924   Gtpase Activity  Catalysis of the Reaction: GTP + H2o = GDP + Phosphate. 
    4871   Signal Transducer Activity  Conveys a Signal Across a Cell to Trigger a Change in Cell Function or State. a Signal Is a Physical Entity or Change in State That Is Used to Transfer Information in Order to Trigger a Response. 
    5096   Gtpase Activator Activity  Increases the Activity of a Gtpase an Enzyme That Catalyzes the Hydrolysis of Gtp. 
    5515   Protein Binding  Interacting Selectively and Non Covalently with Any Protein or Protein Complex (a Complex of Two or More Proteins That May Include Other Nonprotein Molecules). 
    5525   GTP Binding  Interacting Selectively and Non Covalently with GTP Guanosine Triphosphate. 
    19001   Guanyl Nucleotide Binding  Interacting Selectively and Non Covalently with Guanyl Nucleotides Any Compound Consisting of Guanosine Esterified with (ortho)phosphate. 
    31683   G Protein Beta/gamma Subunit Complex Binding  Interacting Selectively and Non Covalently with a Complex of G Protein Beta/gamma Subunits. 
    31826   Type 2a Serotonin Receptor Binding  Interacting Selectively and Non Covalently with a Type 2a Serotonin Receptor. 
    46872   Metal Ion Binding  Interacting Selectively and Non Covalently with Any Metal Ion. 
    Chain B,D
    GO ID   Ontology GO Term Definition
    38032   Termination of G Protein Coupled Receptor Signaling Pathway  The Signaling Process in Which G Protein Coupled Receptor Signaling Is Brought to an End. For Example Through the Action of Gtpase Activating Proteins (gaps) That Act to Accelerate Hydrolysis of GTP to GDP On G Alpha Proteins Thereby Terminating the Transduced Signal. 


     
  •   Gene Details   Hide

    Genetic Source

    Chain B,D
    Common Name Human
    Scientific Name Homo sapiens  
    Gene rgs2, g0s8, gig31
    Host Scientific Name Escherichia coli  


    Chain A,C
    Common Name Mouse
    Scientific Name Mus musculus  
    Gene gnaq
    Host Scientific Name Trichoplusia ni  


    Genome Information

    Chromosome Locus Gene ID Gene Name Symbol
    1 1q31 5997     regulator of G-protein signaling 2 RGS2    
    19 19 A|19 11.01 cM 14682     guanine nucleotide binding protein, alpha q polypeptide GNAQ