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(-) Description

Title :  CRYSTAL STRUCTURE OF STAPHYLOCOCCAL ENTEROTOXIN G
 
Authors :  M. M. Fernandez, S. Bhattacharya, E. L. Malchiodi, R. A. Mariuzza
Date :  05 Nov 04  (Deposition) - 21 Feb 06  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.20
Chains :  Asym./Biol. Unit :  A
Keywords :  Superantigen, T-Cell Receptor Binding, Crystal Structure, Immune System (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  M. M. Fernandez, S. Bhattacharya, E. L. Malchiodi, R. A. Mariuzza
The Crystal Structure Of Staphylococcal Enterotoxin G And Binding Affinity To T-Cell Receptor And Mhc Class Ii Molecule
To Be Published
PubMed: search
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - ENTEROTOXIN
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI BL21(DE3)
    Expression System Plasmid: PET22
    Expression System Strain: BL21(DE3)
    Expression System Taxid: 469008
    Expression System Vector Type: PLASMID
    Organism Scientific: STAPHYLOCOCCUS AUREUS
    Organism Taxid: 1280
    Other Details: CLINICAL ISOLATE
    Strain: FC30

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

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

Asymmetric/Biological Unit (1, 1)
No.NameCountTypeFull Name
1SO41Ligand/IonSULFATE ION

(-) Sites  (1, 1)

Asymmetric Unit (1, 1)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASN A:24 , LYS A:57 , PRO A:203 , PHE A:204 , HOH A:303 , HOH A:344BINDING SITE FOR RESIDUE SO4 A 355

(-) SS Bonds  (1, 1)

Asymmetric/Biological Unit
No.Residues
1A:91 -A:108

(-) Cis Peptide Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1Gln A:1 -Pro A:2
2Val A:202 -Pro A:203

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1XXG)

(-) PROSITE Motifs  (1, 1)

Asymmetric/Biological Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1STAPH_STREP_TOXIN_2PS00278 Staphyloccocal enterotoxin/Streptococcal pyrogenic exotoxin signature 2.ETXG_STAAU171-194  1A:146-169

(-) Exons   (0, 0)

(no "Exon" information available for 1XXG)

(-) 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:227
 aligned with ETXG_STAAU | P0A0L8 from UniProtKB/Swiss-Prot  Length:258

    Alignment length:233
                                    35        45        55        65        75        85        95       105       115       125       135       145       155       165       175       185       195       205       215       225       235       245       255   
           ETXG_STAAU    26 QPDPKLDELNKVSDYKNNKGTMGNVMNLYTSPPVEGRGVINSRQFLSHDLIFPIEYKSYNEVKTELENTELANNYKDKKVDIFGVPYFYTCIIPKSEPDINQNFGGCCMYGGLTFNSSENERDKLITVQVTIDNRQSLGFTITTNKNMVTIQELDYKARHWLTKEKKLYEFDGSAFESGYIKFTEKNNTSFWFDLFPKKELVPFVPYKFLNIYGDNKVVDSKSIKMEVFLNTH 258
               SCOP domains d1xxga1 A:1-115 automated matches                                                                                  d1xxg a2 A:116-233 automated matches                                                                                   SCOP domains
               CATH domains 1xxgA01 A:1-32,A:122-233        1xxgA02 A:33-120  [code=2.40.50.110, no name defined]                                    1xxgA01 A:1-32,A:122-233  [code=3.10.20.120, no name defined]                                                    CATH domains
               Pfam domains -----------------------Stap_Strp_toxin-1xxgA02 A:24-116                                                             ---- --Stap_Strp_tox_C-1xxgA01 A:124-231                                                                           -- Pfam domains
         Sec.struct. author ....hhhhh.hhhhhhhh...hhhhhhhhhh..eeeeee.........eeee.........eeee..hhhhhhhhh...eeeee..............-----....eee..eee.....-..eeeeeeeee...eeeeeeeee...eeehhhhhhhhhhhhhhhhh..........eeeeeee.....eeeee..........hhhhhhhhhh...eee....eeeeeee.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------STAPH_STREP_TOXIN_2     ---------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1xxg A   1 QPDPKLDELNKVSDYKSNKGTMGNVMNLYMSPPVEGRGVINSRQFLSHDLIFPIEYKSYNEVKTELENTELANNYKGKKVDIFGVPYFYTCIIPKSEP-----FGGCCMYGGLTFNSSEN-RDKLITVQVTIDNRQSLGFTITTNKNMVTIQELDYKARHWLTKEKKLYEFDGSAFESGYIKFTEKNNTSFWFDLFPKKELVPFVPYKFLNIYGDNKVVDSKSIKMEVFLNTH 233
                                    10        20        30        40        50        60        70        80        90       | -   |   110       120 |     130       140       150       160       170       180       190       200       210       220       230   
                                                                                                                            98   104             120 |                                                                                                               
                                                                                                                                                   122
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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  (2, 2)

Asymmetric/Biological Unit
(-)
Class: All beta proteins (24004)
(-)
Class: Alpha and beta proteins (a+b) (23004)

(-) CATH Domains  (2, 2)

Asymmetric/Biological Unit
(-)
Class: Alpha Beta (26913)
(-)
Class: Mainly Beta (13760)

(-) Pfam Domains  (2, 2)

Asymmetric/Biological Unit
(-)
Clan: Ant-toxin_C (48)
(-)
Clan: no clan defined [family: Stap_Strp_toxin] (39)

(-) Gene Ontology  (2, 2)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (ETXG_STAAU | P0A0L8)
biological process
    GO:0009405    pathogenesis    The set of specific processes that generate the ability of an organism to induce an abnormal, generally detrimental state in another organism.
cellular component
    GO:0005576    extracellular region    The space external to the outermost structure of a cell. For cells without external protective or external encapsulating structures this refers to space outside of the plasma membrane. This term covers the host cell environment outside an intracellular parasite.

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  1xxg
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