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(-) Description

Title :  CRYSTAL STRUCTURE OF T. CRUZI GPX1
 
Authors :  S. H. Patel, S. Hussain, R. Harris, P. Driscoll, S. Djordjevic
Date :  01 Aug 08  (Deposition) - 04 Aug 09  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.30
Chains :  Asym./Biol. Unit :  A
Keywords :  Thioredoxin Fold, Oxidoreductase, Peroxidase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  S. Patel, S. Hussain, R. Harris, S. Sardiwal, J. M. Kelly, S. R. Wilkinson, P. C. Driscoll, S. Djordjevic
Structural Insights Into The Catalytic Mechanism Of Trypanosoma Cruzi Gpxi (Glutathione Peroxidase-Like Enzyme I).
Biochem. J. V. 425 513 2010
PubMed-ID: 19886864  |  Reference-DOI: 10.1042/BJ20091167

(-) Compounds

Molecule 1 - GLUTATHIONE PEROXIDASE
    Chains: A
    EC Number: 1.11.1.9
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Strain: ROSETTA (DE3)PLYSS
    Expression System Taxid: 562
    Fragment: UNP RESIDUES 14 TO 177
    Gene: GPXI
    Organism Scientific: TRYPANOSOMA CRUZI
    Organism Taxid: 5693

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 3)

Asymmetric/Biological Unit (2, 3)
No.NameCountTypeFull Name
1GOL2Ligand/IonGLYCEROL
2NH41Ligand/IonAMMONIUM ION

(-) Sites  (3, 3)

Asymmetric Unit (3, 3)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREVAL A:21 , ASN A:22 , PHE A:75 , MET A:106 , ALA A:107 , ILE A:109 , HOH A:208BINDING SITE FOR RESIDUE NH4 A 1
2AC2SOFTWARELYS A:137 , TRP A:138 , THR A:141 , ARG A:154 , HOH A:185BINDING SITE FOR RESIDUE GOL A 178
3AC3SOFTWAREPHE A:94 , ALA A:95 , CYS A:96 , HOH A:196BINDING SITE FOR RESIDUE GOL A 179

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3E0U)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3E0U)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3E0U)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3E0U)

(-) Exons   (0, 0)

(no "Exon" information available for 3E0U)

(-) 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:153
 aligned with Q8T8E2_TRYCR | Q8T8E2 from UniProtKB/TrEMBL  Length:177

    Alignment length:164
                                    23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173    
         Q8T8E2_TRYCR    14 KSIYEFQVNAADGKPYDLSQHKGHPLLIYNVASRCGYTKGGYETATTLYNKYKGQGFTVLAFPCNQFAGQEPGTALEVKEFACTRFKADFPIMAKIDVNGSKAHPLYEFMKATIPGLFGTKAIKWNFTSFLIDRHGVPVERFSPGASVEDIEKKLLPLLGGARI 177
               SCOP domains d3e0ua_ A: automated matches                                                                                                                                         SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhh..........hhhhhh...eeeeee........hhhhhhhhhhhhhhhhh.eeeeee......-----------.......................hhhhhhhhhhh..............eeee.....eeeee....hhhhhhhhhh........ Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3e0u A  14 KSIYEFQVNAADGKPYDLSQHKGHPLLIYNVASRCGYTKGGYETATTLYNKYKGQGFTVLAFPCNQFAG-----------FACTRFKADFPIMAKIDVNGSKAHPLYEFMKATIPGLFGTKAIKWNFTSFLIDRHGVPVERFSPGASVEDIEKKLLPLLGGARI 177
                                    23        33        43        53        63        73        |-         -|      103       113       123       133       143       153       163       173    
                                                                                               82          94
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  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
(-)
Class: Alpha and beta proteins (a/b) (23833)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3E0U)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3E0U)

(-) Gene Ontology  (6, 6)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (Q8T8E2_TRYCR | Q8T8E2)
molecular function
    GO:0004602    glutathione peroxidase activity    Catalysis of the reaction: 2 glutathione + hydrogen peroxide = oxidized glutathione + 2 H2O.
    GO:0016491    oxidoreductase activity    Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
    GO:0004601    peroxidase activity    Catalysis of the reaction: donor + hydrogen peroxide = oxidized donor + 2 H2O.
biological process
    GO:0098869    cellular oxidant detoxification    Any process carried out at the cellular level that reduces or removes the toxicity superoxide radicals or hydrogen peroxide.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.
    GO:0006979    response to oxidative 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 oxidative stress, a state often resulting from exposure to high levels of reactive oxygen species, e.g. superoxide anions, hydrogen peroxide (H2O2), and hydroxyl radicals.

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