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(-) Description

Title :  CRYSTAL STRUCTURE OF STAPHYLOCOCCAL ENTEROTOXIN C2 AT 100K CRYSTALLIZED AT PH 5.5
 
Authors :  D. Kumaran, S. Swaminathan
Date :  22 Feb 01  (Deposition) - 14 Mar 01  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.00
Chains :  Asym./Biol. Unit :  A
Keywords :  Enterotoxin, Superantigen, Zinc Binding, Immune System (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  D. Kumaran, S. Eswaramoorthy, W. Furey, M. Sax, S. Swaminathan
Structure Of Staphylococcal Enterotoxin C2 At Various Ph Levels.
Acta Crystallogr. , Sect. D V. 57 1270 2001
PubMed-ID: 11526318  |  Reference-DOI: 10.1107/S0907444901011118
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - ENTEROTOXIN TYPE C-2
    Chains: A
    Organism Scientific: STAPHYLOCOCCUS AUREUS
    Organism Taxid: 1280

 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
1ZN1Ligand/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 A 240
2ZNBAUTHORASP A:83 , HIS A:118 , HIS A:122ZINC IS COORDINATED BY FOUR RESIDUES: ASP A 83, HIS A 118, HIS A 122, AND ASP B 9. ASP B 9 IS FROM A SYMMETRY RELATED MOLECULE.

(-) 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 1I4P)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1I4P)

(-) 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 1I4P)

(-) 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:234
 aligned with ENTC2_STAAU | P34071 from UniProtKB/Swiss-Prot  Length:266

    Alignment length:239
                                    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 ESQPDPTPDELHKSSEFTGTMGNMKYLYDDHYVSATKVMSVDKFLAHDLIYNISDKKLKNYDKVKTELLNEDLAKKYKDEVVDVYGSNYYVNCYFSSKDNVGKVTGGKTCMYGGITKHEGNHFDNGNLQNVLIRVYENKRNTISFEVQTDKKSVTAQELDIKARNFLINKKNLYEFNSSPYETGYIKFIENNGNTFWYDMMPAPGDKFDQSKYLMMYNDNKTVDSKSVKIEVHLTTKNG 266
               SCOP domains d1i4pa1 A:1-120 Staphylococcal enterotoxin C2, SEC2                                                                     d1i4pa2 A:121-239 Staphylococcal enterotoxin C2, SEC2                                                                   SCOP domains
               CATH domains 1i4pA02 A:1-31,A:120-237       1i4pA01 A:32-119  [code=2.40.50.110, no name defined]                                   1i4pA02 A:1-31,A:120-237  [code=3.10.20.120, no name defined]                                                         -- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ............hhhh....hhhhhhhh....eeeeee.........eeeee.........eeeeee..hhhhhhhh...eeeeeeeeee..........-----..eeeeeeeeee............eeeeeeee..eeeeeee.........hhhhhhhhhhhhhhhh.........eeeeeeeeee...eeeeeee.........hhhhhhhhhh.........eeeeeeee... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------STAPH_STRE-----------------------------STAPH_STREP_TOXIN_2     ----------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1i4p A   1 ESQPDPTPDELHKSSEFTGTMGNMKYLYDDHYVSATKVMSVDKFLAHDLIYNISDKKLKNYDKVKTELLNEDLAKKYKDEVVDVYGSNYYVNCYFSSKDN-----GGKTCMYGGITKHEGNHFDNGNLQNVLIRVYENKRNTISFEVQTDKKSVTAQELDIKARNFLINKKNLYEFNSSPYETGYIKFIENNGNTFWYDMMPAPGDKFDQSKYLMMYNDNKTVDSKSVKIEVHLTTKNG 239
                                    10        20        30        40        50        60        70        80        90       100     | 110       120       130       140       150       160       170       180       190       200       210       220       230         
                                                                                                                             100   106
   Legend:   → Mismatch (orange background)
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    → 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/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  (0, 0)

(no "Pfam Domain" information available for 1I4P)

(-) 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

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

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