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(-) Description

Title :  CRYSTAL STRUCTURE OF THE PP2A PHOSPHATASE ACTIVATOR YPA2 PTPA2
 
Authors :  N. Leulliot, G. Vicentini, J. Jordens, S. Quevillon-Cheruel, M. Schil D. Barford, H. Van Tilbeurgh, J. Goris
Date :  09 Jul 06  (Deposition) - 31 Jul 06  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.80
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Keywords :  Pp2A Phosphatase Activator Prolyl Isomerase Ptpa, Isomerase (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 ACTIVATOR 2
    Chains: A, B
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Strain: GOLD (DE3)
    Expression System Taxid: 562
    Expression System Vector: PET9
    Fragment: RESIDUES 1-304
    Organism Common: BAKER'S YEAST
    Organism Scientific: SACCHAROMYCES CEREVISIAE
    Organism Taxid: 4932
    Synonym: PEPTIDYL-PROLYL CIS-TRANS ISOMERASE PTPA-2, PPIASE PTPA-2, ROTAMASE PTPA-2, PTPA2, PHOSPHOTYROSYL PHOSPHATASE ACTIVATOR 2

 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  (0, 0)

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

(-) Sites  (0, 0)

(no "Site" information available for 2IXN)

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (1, 1)

Asymmetric Unit
No.Residues
1Thr B:9 -Pro B:10

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2IXN)

(-) PROSITE Motifs  (0, 0)

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

(-) Exons   (1, 2)

Asymmetric Unit (1, 2)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1YPL152W1YPL152W.1XVI:265027-2661031077PTPA2_YEAST1-3583582A:3-299 (gaps)
B:3-299 (gaps)		297
297

(-) 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:292
 aligned with PTPA2_YEAST | Q12461 from UniProtKB/Swiss-Prot  Length:358

    Alignment length:297
                                    12        22        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       
          PTPA2_YEAST     3 PEKRLLTPDDMKLWEESPTRAHFTKFIIDLAESVKGHENSQYKEPISESINSMMNLLSQIKDITQKHPVIKDADSSRFGKVEFRDFYDEVSRNSRKILRSEFPSLTDEQLEQLSIYLDESWGNKRRIDYGSGHELNFMCLLYGLYSYGIFNLSNDSTNLVLKVFIEYLKIMRILETKYWLEPAGSHGVWGLDDYHFLPFLFGAFQLTTHKHLKPISIHNNELVEMFAHRYLYFGCIAFINKVKSSASLRWHSPMLDDISGVKTWSKVAEGMIKMYKAEVLSKLPIMQHFYFSEFLPC 299
               SCOP domains d2ixna1 A:3-299 Serine/threonine-protein phosphatase 2A regulatory subu     nit B', PTPA                                                                                                                                                                                                                  SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..........hhhhhhhhhhhhhhhhhhhhhhh.............hhhhhhhhhhhhhhhhhhh......-----....hhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhh........eehhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhh.ee.............hhhhhhhhhhh......hhhhhhhhhhhhhhh..hhhhhhhhhhhhhh...hhhhhhhhhhhhh...hhhhhhhhhhhhhhhhh..hhhhhh.......... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
               Transcript 1 Exon 1.1  PDB: A:3-299 (gaps) UniProt: 1-358 [INCOMPLETE]                                                                                                                                                                                                                                                 Transcript 1
                 2ixn A   3 PEKRLLTPDDMKLWEESPTRAHFTKFIIDLAESVKGHENSQYKEPISESINSMMNLLSQIKDITQKHPVIK-----RFGKVEFRDFYDEVSRNSRKILRSEFPSLTDEQLEQLSIYLDESWGNKRRIDYGSGHELNFMCLLYGLYSYGIFNLSNDSTNLVLKVFIEYLKIMRILETKYWLEPAGSHGVWGLDDYHFLPFLFGAFQLTTHKHLKPISIHNNELVEMFAHRYLYFGCIAFINKVKSSASLRWHSPMLDDISGVKTWSKVAEGMIKMYKAEVLSKLPIMQHFYFSEFLPC 299
                                    12        22        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       
                                                                                                 73    79                                                                                                                                                                                                                            


Chain B from PDB  Type:PROTEIN  Length:286
 aligned with PTPA2_YEAST | Q12461 from UniProtKB/Swiss-Prot  Length:358

    Alignment length:297
                                    12        22        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       
          PTPA2_YEAST     3 PEKRLLTPDDMKLWEESPTRAHFTKFIIDLAESVKGHENSQYKEPISESINSMMNLLSQIKDITQKHPVIKDADSSRFGKVEFRDFYDEVSRNSRKILRSEFPSLTDEQLEQLSIYLDESWGNKRRIDYGSGHELNFMCLLYGLYSYGIFNLSNDSTNLVLKVFIEYLKIMRILETKYWLEPAGSHGVWGLDDYHFLPFLFGAFQLTTHKHLKPISIHNNELVEMFAHRYLYFGCIAFINKVKSSASLRWHSPMLDDISGVKTWSKVAEGMIKMYKAEVLSKLPIMQHFYFSEFLPC 299
               SCOP domains d2ixnb_ B: automated matches                                                                                                                                                                                                                                                                              SCOP domains
               CATH domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ........hhhhhhhhhhhhhhhhhhhhhhhhhh............hhhhhhhhhhhhhhhhhhh......----.....hhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhh........eehhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhh..ee...----......hhhhhhhhhh.......hhhhhhh.hhhhhhh..hhhhhhhhhhhhhh---hhhhhhhhhhhh....hhhhhhhhhhhhhhhhh..hhhhhh.......... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
               Transcript 1 Exon 1.1  PDB: B:3-299 (gaps) UniProt: 1-358 [INCOMPLETE]                                                                                                                                                                                                                                                 Transcript 1
                 2ixn B   3 PEKRLLTPDDMKLWEESPTRAHFTKFIIDLAESVKGHENSQYKEPISESINSMMNLLSQIKDITQKHPVIK----SRFGKVEFRDFYDEVSRNSRKILRSEFPSLTDEQLEQLSIYLDESWGNKRRIDYGSGHELNFMCLLYGLYSYGIFNLSNDSTNLVLKVFIEYLKIMRILETKYWLEPAGS----GLDDYHFLPFLFGAFQLTTHKHLKPISIHNNELVEMFAHRYLYFGCIAFINKVK---SLRWHSPMLDDISGVKTWSKVAEGMIKMYKAEVLSKLPIMQHFYFSEFLPC 299
                                    12        22        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       
                                                                                                 73   78                                                                                                          187  192                                                  245 249
   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  (2, 2)

Asymmetric Unit
(-)
Class: All alpha proteins (14657)

(-) CATH Domains  (0, 0)

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

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (11, 11)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (PTPA2_YEAST | Q12461)
molecular function
    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: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: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.
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:0043085    positive regulation of catalytic activity    Any process that activates or increases the activity of an enzyme.
    GO:0000413    protein peptidyl-prolyl isomerization    The modification of a protein by cis-trans isomerization of a proline residue.
    GO:0006970    response to osmotic stress    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating an increase or decrease in the concentration of solutes outside the organism or cell.
cellular component
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    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 Specified in the PDB File

2ixo CRYSTAL STRUCTURE OF THE PP2A PHOSPHATASE ACTIVATOR YPA1 PTPA1
2ixp CRYSTAL STRUCTURE OF THE PP2A PHOSPHATASE ACTIVATOR YPA1 PTPA1 IN COMPLEX WITH MODEL SUBSTRATE