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(-) Description

Title :  STRUCTURE OF HUMAN PTPA
 
Authors :  N. Leulliot, G. Vicentini, J. Jordens, S. Quevillon-Cheruel, M. Schiltz, D. Barford, H. Van Tilbeurgh, J. Goris
Date :  09 Jul 06  (Deposition) - 11 Jul 06  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.50
Chains :  Asym./Biol. Unit :  A
Keywords :  Protein Phosphatase 2A, 2 Ptpa, Ppiase, Hydrolase Activator (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  N. Leulliot, G. Vicentini, J. Jordens, S. Quevillon-Cheruel, M. Schiltz, D. Barford, H. Van Tilbeurgh, J. Goris
Crystal Structure Of The Pp2A Phosphatase Activator: Implications For Its Pp2A-Specific Ppiase Activity
Mol. Cell V. 23 413 2006
PubMed-ID: 16885030  |  Reference-DOI: 10.1016/J.MOLCEL.2006.07.008

(-) Compounds

Molecule 1 - SERINE/THREONINE-PROTEIN PHOSPHATASE 2A REGULATORY SUBUNIT B'
    ChainsA
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPET-17B
    Expression System StrainB834
    Expression System Taxid562
    FragmentRESIDUES 20-322
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymPROTEIN PHOSPHATASE 2A ACTIVATOR, PP2A, SUBUNIT B', PR53 ISOFORM, PHOSPHOTYROSYL PHOSPHATASE ACTIVATOR, PTPA

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 2IXM)

(-) Sites  (0, 0)

(no "Site" information available for 2IXM)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2IXM)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2IXM)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (3, 3)

Asymmetric/Biological Unit (3, 3)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_028101K28RPTPA_HUMANPolymorphism17481693AK28R
2UniProtVAR_028102R208QPTPA_HUMANPolymorphism4836639AR173Q
3UniProtVAR_028103S357LPTPA_HUMANPolymorphism2480452AS322L

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

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 2IXM)

(-) Exons   (10, 10)

Asymmetric/Biological Unit (10, 10)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.2bENST000003377382bENSE00001420895chr9:131873613-131873910298PTPA_HUMAN1-11110--
1.7aENST000003377387aENSE00001757726chr9:131882792-13188288998PTPA_HUMAN11-43331A:23-4321
1.8ENST000003377388ENSE00001705154chr9:131885331-13188541787PTPA_HUMAN44-72291A:44-7027
1.9ENST000003377389ENSE00001632900chr9:131890243-131890347105PTPA_HUMAN73-107351A:71-722
1.10bENST0000033773810bENSE00001804284chr9:131891264-131891389126PTPA_HUMAN108-149421A:73-11442
1.11ENST0000033773811ENSE00002158657chr9:131893801-131893918118PTPA_HUMAN150-189401A:115-15440
1.12cENST0000033773812cENSE00001597590chr9:131897074-131897173100PTPA_HUMAN189-222341A:154-18734
1.13cENST0000033773813cENSE00001711396chr9:131898750-131898874125PTPA_HUMAN222-264431A:187-22943
1.14aENST0000033773814aENSE00001760922chr9:131899871-131899971101PTPA_HUMAN264-297341A:229-26234
1.19aENST0000033773819aENSE00002152224chr9:131904724-131904831108PTPA_HUMAN298-333361A:263-29836
1.21gENST0000033773821gENSE00001637868chr9:131909666-1319112231558PTPA_HUMAN334-358251A:299-32224

(-) Sequences/Alignments

Asymmetric/Biological 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:300
 aligned with PTPA_HUMAN | Q15257 from UniProtKB/Swiss-Prot  Length:358

    Alignment length:335
                                    32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302       312       322       332       342       352     
           PTPA_HUMAN    23 FIIPKKEIHTVPDMGKWKRSQAYADYIGFILTLNEGVKGKKLTFEYRVSEMWNEVHEEKEQAAKQSVSCDECIPLPRAGHCAPSEAIEKLVALLNTLDRWIDETPPVDQPSRFGNKAYRTWYAKLDEEAENLVATVVPTHLAAAVPEVAVYLKESVGNSTRIDYGTGHEAAFAAFLCCLCKIGVLRVDDQIAIVFKVFNRYLEVMRKLQKTYRMEPAGSQGVWGLDDFQFLPFIWGSSQLIDHPYLEPRHFVDEKAVNENHKDYMFLECILFITEMKTGPFAEHSNQLWNISAVPSWSKVNQGLIRMYKAECLEKFPVIQHFKFGSLLPIHPVTS 357
               SCOP domains d2ixma1 A:23-322 Serine/threonine-protein phosph                                   atase 2A regulatory subunit B', PTPA                                                                                                                                                                                                                         SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....ee....hhhhhhhhhhhhhhhhhhhhhhhhhhh...........-----------------------------------hhhhhhhhhhhhhhhhhhhh............hhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhh........eehhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhh..ee...hhhhh.....hhhhhhhhhhh......hhhhhhhhhhhhhhh..hhhhhhhhhhhhhh..hhhhhhhhhhhhh...hhhhhhhhhhhhhhhhh..hhhhhh..ee........... Sec.struct. author
                 SAPs(SNPs) -----R-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------Q----------------------------------------------------------------------------------------------------------------------------------------------------L SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.7a            Exon 1.8  PDB: A:44-70       Exon 1.9  PDB: A:71-72 [INCOMPLETE]Exon 1.10b  PDB: A:73-114 UniProt: 108-149Exon 1.11  PDB: A:115-154               --------------------------------Exon 1.13c  PDB: A:187-229 UniProt: 222-264---------------------------------Exon 1.19a  PDB: A:263-298          Exon 1.21g [INCOMPLETE]  Transcript 1 (1)
           Transcript 1 (2) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------Exon 1.12c  PDB: A:154-187        -----------------------------------------Exon 1.14a  PDB: A:229-262        ------------------------------------------------------------ Transcript 1 (2)
                 2ixm A  23 FIIPKKEIHTVPDMGKWKRSQAYADYIGFILTLNEGVKGKKLTFEYRV-----------------------------------SEAIEKLLALLNTLDRWIDETPPVDQPSRFGNKAYRTWYAKLDEEAENLVATVVPTHLAAAVPEVAVYLKESVGNSTRIDYGTGHEAAFAAFLCCLCKIGVLRVDDQIAIVFKVFNRYLEVMRKLQKTYRMEPAGSQGVWGLDDFQFLPFIWGSSQLIDHPYLEPRHFVDEKAVNENHKDYMFLECILFITEMKTGPFAEHSNQLWNISAVPSWSKVNQGLIRMYKAECLEKFPVIQHFKFGSLLPIHPVTS 322
                                    32        42        52        62       | -         -         -         -   |    77        87        97       107       117       127       137       147       157       167       177       187       197       207       217       227       237       247       257       267       277       287       297       307       317     
                                                                          70                                  71                                                                                                                                                                                                                                                           

   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, 1)

Asymmetric/Biological Unit

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2IXM)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2IXM)

(-) Gene Ontology  (26, 26)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (PTPA_HUMAN | Q15257)
molecular function
    GO:0005524    ATP binding    Interacting selectively and non-covalently with ATP, adenosine 5'-triphosphate, a universally important coenzyme and enzyme regulator.
    GO:0016887    ATPase activity    Catalysis of the reaction: ATP + H2O = ADP + phosphate + 2 H+. May or may not be coupled to another reaction.
    GO:0016853    isomerase activity    Catalysis of the geometric or structural changes within one molecule. Isomerase is the systematic name for any enzyme of EC class 5.
    GO:0000166    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.
    GO:0003755    peptidyl-prolyl cis-trans isomerase activity    Catalysis of the reaction: peptidyl-proline (omega=180) = peptidyl-proline (omega=0).
    GO:0019211    phosphatase activator activity    Increases the activity of a phosphatase, an enzyme which catalyzes of the removal of a phosphate group from a substrate molecule.
    GO:0005515    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).
    GO:0046982    protein heterodimerization activity    Interacting selectively and non-covalently with a nonidentical protein to form a heterodimer.
    GO:0042803    protein homodimerization activity    Interacting selectively and non-covalently with an identical protein to form a homodimer.
    GO:0051721    protein phosphatase 2A binding    Interacting selectively and non-covalently with the enzyme protein phosphatase 2A.
    GO:0008160    protein tyrosine phosphatase activator activity    Increases the activity of a phosphatase, an enzyme which catalyzes of the removal of a phosphate group from a tyrosyl phenolic group of a protein.
    GO:0005102    receptor binding    Interacting selectively and non-covalently with one or more specific sites on a receptor molecule, a macromolecule that undergoes combination with a hormone, neurotransmitter, drug or intracellular messenger to initiate a change in cell function.
biological process
    GO:0030472    mitotic spindle organization in nucleus    A process resulting in the assembly, arrangement of constituent parts, or disassembly of the microtubule spindle in the nucleus. The process occurs during a mitotic cell cycle and takes place at the cellular level.
    GO:0032515    negative regulation of phosphoprotein phosphatase activity    Any process that stops or reduces the activity of a phosphoprotein phosphatase.
    GO:0035308    negative regulation of protein dephosphorylation    Any process the stops, prevents, or reduces the frequency, rate or extent of removal of phosphate groups from a protein.
    GO:0043065    positive regulation of apoptotic process    Any process that activates or increases the frequency, rate or extent of cell death by apoptotic process.
    GO:0032516    positive regulation of phosphoprotein phosphatase activity    Any process that activates or increases the activity of a phosphoprotein phosphatase.
    GO:0035307    positive regulation of protein dephosphorylation    Any process that activates or increases the frequency, rate or extent of removal of phosphate groups from a protein.
    GO:0000413    protein peptidyl-prolyl isomerization    The modification of a protein by cis-trans isomerization of a proline residue.
    GO:0043666    regulation of phosphoprotein phosphatase activity    Any process that modulates the frequency, rate or extent of phosphoprotein phosphatase activity, the catalysis of the hydrolysis of phosphate from a phosphoprotein.
cellular component
    GO:0034704    calcium channel complex    An ion channel complex through which calcium ions pass.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    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:0005654    nucleoplasm    That part of the nuclear content other than the chromosomes or the nucleolus.
    GO:0005634    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.
    GO:0000159    protein phosphatase type 2A complex    A protein complex that has protein serine/threonine phosphatase activity that is polycation-stimulated (PCS), being directly stimulated by protamine, polylysine, or histone H1; it constitutes a subclass of several enzymes activated by different histones and polylysine, and consists of catalytic, scaffolding, and regulatory subunits. The catalytic and scaffolding subunits form the core enzyme, and the holoenzyme also includes the regulatory subunit.

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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        PTPA_HUMAN | Q152572g62 2hv6 2hv7 4lac 4ny3

(-) Related Entries Specified in the PDB File

2g62 CRYSTAL STRUCTURE OF HUMAN PTPA