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(-) Description

Title :  IDENTIFICATION OF A SECONDARY ZINC-BINDING SITE IN STAPHYLOCOCCAL ENTEROTOXIN C2: IMPLICATIONS FOR SUPERANTIGEN RECOGNITION
 
Authors :  A. C. Papageorgiou, M. D. Baker, J. D. Mcleod, S. Goda, D. M. Sansom, H. S. Tranter, K. R. Acharya
Date :  15 Sep 03  (Deposition) - 13 Nov 03  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.00
Chains :  Asym./Biol. Unit :  A
Keywords :  Superantigen, Toxin, Enterotoxin, Zinc-Binding Site (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  A. C. Papageorgiou, M. D. Baker, J. D. Mcleod, S. Goda, C. N. Manzotti, D. M. Sanson, H. S. Tranter, K. R. Acharya
Identification Of A Secondary Zinc-Binding Site In Staphylococcal Enterotoxin C2: Implications For Superantigen Recognition
J. Biol. Chem. V. 279 1297 2004
PubMed-ID: 14559915  |  Reference-DOI: 10.1074/JBC.M307333200
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - ENTEROTOXIN TYPE C-2
    Chains: A
    Organism Scientific: STAPHYLOCOCCUS AUREUS
    Organism Taxid: 1280
    Synonym: STAPHYLOCOCCAL ENTEROTOXIN C2, SEC2

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 2)

Asymmetric/Biological Unit (1, 2)
No.NameCountTypeFull Name
1ZN2Ligand/IonZINC ION

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASP A:9 , ASP A:83 , HIS A:118 , HIS A:122BINDING SITE FOR RESIDUE ZN A1237
2AC2SOFTWAREHIS A:47 , GLU A:71 , GLU A:80 , GLU A:119BINDING SITE FOR RESIDUE ZN A1238

(-) SS Bonds  (1, 1)

Asymmetric/Biological Unit
No.Residues
1A:93 -A:110

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1UNS)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (2, 2)

Asymmetric/Biological Unit (2, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1STAPH_STREP_TOXIN_1PS00277 Staphylococcal enterotoxin/Streptococcal pyrogenic exotoxin signature 1.ENTC2_STAAU139-148  1A:112-121
2STAPH_STREP_TOXIN_2PS00278 Staphyloccocal enterotoxin/Streptococcal pyrogenic exotoxin signature 2.ENTC2_STAAU178-201  1A:151-174

(-) Exons   (0, 0)

(no "Exon" information available for 1UNS)

(-) 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:236
 aligned with ENTC2_STAAU | P34071 from UniProtKB/Swiss-Prot  Length:266

    Alignment length:236
                                    37        47        57        67        77        87        97       107       117       127       137       147       157       167       177       187       197       207       217       227       237       247       257      
          ENTC2_STAAU    28 ESQPDPTPDELHKSSEFTGTMGNMKYLYDDHYVSATKVMSVDKFLAHDLIYNISDKKLKNYDKVKTELLNEDLAKKYKDEVVDVYGSNYYVNCYFSSKDNVGKVTGGKTCMYGGITKHEGNHFDNGNLQNVLIRVYENKRNTISFEVQTDKKSVTAQELDIKARNFLINKKNLYEFNSSPYETGYIKFIENNGNTFWYDMMPAPGDKFDQSKYLMMYNDNKTVDSKSVKIEVHLTT 263
               SCOP domains d1unsa1 A:1-120 Staphylococcal enterotoxin C2, SEC2                                                                     d1unsa2 A:121-236 Staphylococcal enterotoxin C2, SEC2                                                                SCOP domains
               CATH domains 1unsA02 A:1-31,A:120-236       1unsA01 A:32-119  [code=2.40.50.110, no name defined]                                   1unsA02 A:1-31,A:120-236  [code=3.10.20.120, no name defined]                                                         CATH domains
               Pfam domains ----------------------Stap_Strp_toxin-1unsA02 A:23-118                                                                ----------Stap_Strp_tox_C-1unsA01 A:129-235                                                                          - Pfam domains
         Sec.struct. author ............hhhh....hhhhhhhhh...eeeeee.........eeee............eeee..hhhhhhhhhh..eeeee......................eeee..eee.....hhhhh.eeeeeeeee..eeeeeeeeee...eeehhhhhhhhhhhhhhhhh..........eeeeeee.....eeeee.........hhhhhhhhhhhh.eee....eeeeeee. Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------STAPH_STRE-----------------------------STAPH_STREP_TOXIN_2     -------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1uns A   1 ESQPDPTPDELHKSSEFTGTMGNMKYLYDDHYVSATKVMSVDKFLAHDLIYNISDKKLKNYDKVKTELLNEDLAKKYKDEVVDVYGSNYYVNCYFSSKDNVGKVTGGKTCMYGGITKHEGNHFDNGNLQNVLIRVYENKRNTISFEVQTDKKSVTAQELDIKARNFLINKKNLYEFNSSPYETGYIKFIENNGNTFWYDMMPAPGDKFDQSKYLMMYNDNKTVDSKSVKIEVHLTT 236
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230
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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  (3, 3)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (ENTC2_STAAU | P34071)
molecular function
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
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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 Related Entries

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

UniProtKB/Swiss-Prot
        ENTC2_STAAU | P34071: 1cqv 1i4p 1i4q 1i4r 1i4x 1se2 1ste

(-) Related Entries Specified in the PDB File

1cqv CRYSTAL STRUCTURE OF STAPHYLOCOCCAL ENTEROTOXIN C2 AT 100K
1i4p CRYSTAL STRUCTURE OF STAPHYLOCOCCAL ENTEROTOXIN C2 AT 100KCRYSTALLIZED AT PH 5.5
1i4q CRYSTAL STRUCTURE OF STAPHYLOCOCCAL ENTEROTOXIN C2 AT 100KCRYSTALLIZED AT PH 6.0
1i4r CRYSTAL STRUCTURE OF STAPHYLOCOCCAL ENTEROTOXIN C2 AT 100KCRYSTALLIZED AT PH 6.5
1i4x STAPHYLOCOCCAL ENTEROTOXIN C2, MONOCLINIC FORM CRYSTALLIZEDAT PH 8.0
1se2 STAPHYLOCOCCAL ENTEROTOXIN C2, MONOCLINIC FORM
1ste STAPHYLOCOCCAL ENTEROTOXIN C2 FROM STAPHYLOCOCCUS AUREUS