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(-) Description

Title :  CRYSTAL STRUCTURE OF THE RASGAP C-TERMINAL (RGC) DOMAIN OF IQGAP2
 
Authors :  L. Nedyalkova, W. Tempel, Y. Tong, N. Zhong, L. Crombet, C. H. Arrowsmith, A. M. Edwards, C. Bountra, J. Weigelt, A. Bochkarev, H. Park, Structural Genomics Consortium (Sgc)
Date :  23 Jul 09  (Deposition) - 03 Nov 09  (Release) - 03 Nov 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.50
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Keywords :  Gap, Structural Genomics Consortium, Sgc, Alternative Splicing, Calmodulin-Binding, Phosphoprotein, Polymorphism, Signaling Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  L. Nedyalkova, W. Tempel, Y. Tong, N. Zhong, L. Crombet, C. H. Arrowsmith, A. M. Edwards, C. Bountra, J. Weigelt, A. Bochkarev, H. Park
Crystal Structure Of The Rasgap C-Terminal (Rgc) Domain Of Iqgap2
To Be Published
PubMed: search
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - RAS GTPASE-ACTIVATING-LIKE PROTEIN IQGAP2
    ChainsA, B
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPET28-MHL
    Expression System StrainBL21-V2R-PRARE2
    Expression System Taxid562
    FragmentUNP RESIDUES 1476-1571
    GeneIQGAP2
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit AB
Biological Unit 1 (1x)A 
Biological Unit 2 (1x) B

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 8)

Asymmetric Unit (1, 8)
No.NameCountTypeFull Name
1UNX8Ligand/IonUNKNOWN ATOM OR ION
Biological Unit 1 (1, 4)
No.NameCountTypeFull Name
1UNX4Ligand/IonUNKNOWN ATOM OR ION
Biological Unit 2 (1, 4)
No.NameCountTypeFull Name
1UNX4Ligand/IonUNKNOWN ATOM OR ION

(-) Sites  (0, 0)

(no "Site" information available for 3IEZ)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3IEZ)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3IEZ)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (1, 2)

Asymmetric Unit (1, 2)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_069435M1530IIQGA2_HUMANPolymorphism150409607A/BM1530I

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 1 (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_069435M1530IIQGA2_HUMANPolymorphism150409607AM1530I

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 2 (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_069435M1530IIQGA2_HUMANPolymorphism150409607BM1530I

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3IEZ)

(-) Exons   (0, 0)

(no "Exon" information available for 3IEZ)

(-) Sequences/Alignments

Asymmetric Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
(details for a mapped element are shown in a popup box when the mouse pointer rests over it)
Chain A from PDB  Type:PROTEIN  Length:94
 aligned with IQGA2_HUMAN | Q13576 from UniProtKB/Swiss-Prot  Length:1575

    Alignment length:94
                                  1486      1496      1506      1516      1526      1536      1546      1556      1566    
         IQGA2_HUMAN   1477 KPVKYTAAKLHEKGVLLDIDDLQTNQFKNVTFDIIATEDVGIFDVRSKFLGVEMEKVQLNIQDLLQMQYEGVAVMKMFDKVKVNVNLLIYLLNK 1570
               SCOP domains d3ieza_ A: automated matches                                                                   SCOP domains
               CATH domains ---------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..eeeehhhhhhh..eeee...hhhhhh.eeeeeee.....eeeeeeee..eeeeeeeeehhhhhhhhhh...eeeee..eeeehhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) -----------------------------------------------------I---------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------- Transcript
                3iez A 1477 KPVKYTAAKLHEKGVLLDIDDLQTNQFKNVTFDIIATEDVGIFDVRSKFLGVEMEKVQLNIQDLLQMQYEGVAVMKMFDKVKVNVNLLIYLLNK 1570
                                  1486      1496      1506      1516      1526      1536      1546      1556      1566    

Chain B from PDB  Type:PROTEIN  Length:95
 aligned with IQGA2_HUMAN | Q13576 from UniProtKB/Swiss-Prot  Length:1575

    Alignment length:95
                                  1486      1496      1506      1516      1526      1536      1546      1556      1566     
         IQGA2_HUMAN   1477 KPVKYTAAKLHEKGVLLDIDDLQTNQFKNVTFDIIATEDVGIFDVRSKFLGVEMEKVQLNIQDLLQMQYEGVAVMKMFDKVKVNVNLLIYLLNKK 1571
               SCOP domains d3iezb_ B: automated matches                                                                    SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..eeeehhhhhhh..eeee...hhhhhh.eeeeeee.....eeeeeeee..eeeeeeeeehhhhhhhhhh...eeeee..eeeehhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) -----------------------------------------------------I----------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------- Transcript
                3iez B 1477 KPVKYTAAKLHEKGVLLDIDDLQTNQFKNVTFDIIATEDVGIFDVRSKFLGVEMEKVQLNIQDLLQMQYEGVAVMKMFDKVKVNVNLLIYLLNKK 1571
                                  1486      1496      1506      1516      1526      1536      1546      1556      1566     

   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
    → Modified Residue (blue background, lower-case, 'x' indicates undefined single-letter code, labelled with number + name)
  x → Chemical Group (purple background, 'x', labelled with number + name, e.g. ACE or NH2)
  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (1, 2)

Asymmetric Unit

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3IEZ)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3IEZ)

(-) Gene Ontology  (26, 26)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (IQGA2_HUMAN | Q13576)
molecular function
    GO:0071933    Arp2/3 complex binding    Interacting selectively and non-covalently with an Arp2/3 complex, a protein complex that contains two actin-related proteins, Arp2 and Arp3, and five novel proteins (ARPC1-5).
    GO:0005096    GTPase activator activity    Binds to and increases the activity of a GTPase, an enzyme that catalyzes the hydrolysis of GTP.
    GO:0005095    GTPase inhibitor activity    Stops, prevents or reduces the activity of any enzyme that catalyzes the hydrolysis of GTP to GDP and orthophosphate.
    GO:0048365    Rac GTPase binding    Interacting selectively and non-covalently with Rac protein, any member of the Rac subfamily of the Ras superfamily of monomeric GTPases.
    GO:0017048    Rho GTPase binding    Interacting selectively and non-covalently with Rho protein, any member of the Rho subfamily of the Ras superfamily of monomeric GTPases. Proteins in the Rho subfamily are involved in relaying signals from cell-surface receptors to the actin cytoskeleton.
    GO:0003779    actin binding    Interacting selectively and non-covalently with monomeric or multimeric forms of actin, including actin filaments.
    GO:0051015    actin filament binding    Interacting selectively and non-covalently with an actin filament, also known as F-actin, a helical filamentous polymer of globular G-actin subunits.
    GO:0005516    calmodulin binding    Interacting selectively and non-covalently with calmodulin, a calcium-binding protein with many roles, both in the calcium-bound and calcium-free states.
    GO:0005547    phosphatidylinositol-3,4,5-trisphosphate binding    Interacting selectively and non-covalently with phosphatidylinositol-3,4,5-trisphosphate, a derivative of phosphatidylinositol in which the inositol ring is phosphorylated at the 3', 4' and 5' positions.
biological process
    GO:0034314    Arp2/3 complex-mediated actin nucleation    The actin nucleation process in which actin monomers combine to form a new branch on the side of an existing actin filament; mediated by the Arp2/3 protein complex and its interaction with other proteins.
    GO:0034260    negative regulation of GTPase activity    Any process that stops or reduces the rate of GTP hydrolysis by a GTPase.
    GO:0043547    positive regulation of GTPase activity    Any process that activates or increases the activity of a GTPase.
    GO:0043087    regulation of GTPase activity    Any process that modulates the rate of GTP hydrolysis by a GTPase.
    GO:0007165    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.
    GO:0007264    small GTPase mediated signal transduction    Any series of molecular signals in which a small monomeric GTPase relays one or more of the signals.
    GO:0070493    thrombin-activated receptor signaling pathway    The series of molecular signals generated as a consequence of a thrombin-activated receptor binding to one of its physiological ligands.
cellular component
    GO:0015629    actin cytoskeleton    The part of the cytoskeleton (the internal framework of a cell) composed of actin and associated proteins. Includes actin cytoskeleton-associated complexes.
    GO:0009986    cell surface    The external part of the cell wall and/or plasma membrane.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.
    GO:0070062    extracellular exosome    A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
    GO:0031941    filamentous actin    A two-stranded helical polymer of the protein actin.
    GO:0030175    filopodium    Thin, stiff, actin-based protrusion extended by the leading edge of a motile cell such as a crawling fibroblast or amoeba, or an axonal or dendritic growth cone, or a dendritic shaft.
    GO:0030027    lamellipodium    A thin sheetlike process extended by the leading edge of a migrating cell or extending cell process; contains a dense meshwork of actin filaments.
    GO:0005874    microtubule    Any of the long, generally straight, hollow tubes of internal diameter 12-15 nm and external diameter 24 nm found in a wide variety of eukaryotic cells; each consists (usually) of 13 protofilaments of polymeric tubulin, staggered in such a manner that the tubulin monomers are arranged in a helical pattern on the microtubular surface, and with the alpha/beta axes of the tubulin subunits parallel to the long axis of the tubule; exist in equilibrium with pool of tubulin monomers and can be rapidly assembled or disassembled in response to physiological stimuli; concerned with force generation, e.g. in the spindle.
    GO:0005902    microvillus    Thin cylindrical membrane-covered projections on the surface of an animal cell containing a core bundle of actin filaments. Present in especially large numbers on the absorptive surface of intestinal cells.

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 Related Entries

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        IQGA2_HUMAN | Q135764eza 5cjp

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