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(-) Description

Title :  CRYSTAL STRUCTURE OF THE B SUBUNIT OF HUMAN HEAT-LABILE ENTEROTOXIN FROM E. COLI CARRYING A PEPTIDE WITH ANTI-HSV ACTIVITY
 
Authors :  D. Matkovic-Calogovic, A. Loreggian, G. Palu, G. Zanotti
Date :  31 Jul 98  (Deposition) - 09 Feb 99  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  3.04
Chains :  Asym. Unit :  D,E,F,G,H
Biol. Unit 1:  D,E,F,G,H  (1x)
Biol. Unit 2:  D,E,F,G,H  (2x)
Keywords :  B Subunit, Heat-Labile Enterotoxin, Anti-Hsv (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  D. Matkovic-Calogovic, A. Loregian, M. R. D'Acunto, R. Battistutta, A. Tossi, G. Palu, G. Zanotti
Crystal Structure Of The B Subunit Of Escherichia Coli Heat-Labile Enterotoxin Carrying Peptides With Anti-Herpes Simplex Virus Type 1 Activity.
J. Biol. Chem. V. 274 8764 1999
PubMed-ID: 10085117
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - HEAT-LABILE ENTEROTOXIN
    ChainsD, E, F, G, H
    EngineeredYES
    Expression SystemVIBRIO SP.
    Expression System PlasmidPAM320
    Expression System StrainSP60
    Expression System Taxid678
    Expression System Vector TypePLASMID
    FragmentSUBUNIT B-R2
    MutationYES
    Organism ScientificESCHERICHIA COLI
    Organism Taxid562
    Other DetailsTHE B SUBUNIT HAS A PEPTIDE WITH ANTI-HSV ACTIVITY AS AN EXTENSION, RESIDUES 104-113
    SynonymETB-R2

 Structural Features

(-) Chains, Units

  12345
Asymmetric Unit DEFGH
Biological Unit 1 (1x)DEFGH
Biological Unit 2 (2x)DEFGH

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 6)

Asymmetric Unit (1, 6)
No.NameCountTypeFull Name
1SO46Ligand/IonSULFATE ION
Biological Unit 1 (1, 6)
No.NameCountTypeFull Name
1SO46Ligand/IonSULFATE ION
Biological Unit 2 (1, 12)
No.NameCountTypeFull Name
1SO412Ligand/IonSULFATE ION

(-) Sites  (6, 6)

Asymmetric Unit (6, 6)
No.NameEvidenceResiduesDescription
1AC1SOFTWARETHR D:80 , LYS D:81 , LYS D:103 , HOH D:124BINDING SITE FOR RESIDUE SO4 D 114
2AC2SOFTWARETHR E:80 , LYS E:81 , LYS E:103BINDING SITE FOR RESIDUE SO4 E 114
3AC3SOFTWAREGLU F:79 , THR F:80 , LYS F:81 , LYS F:103 , HOH F:141BINDING SITE FOR RESIDUE SO4 F 114
4AC4SOFTWARETHR G:80 , LYS G:81 , LYS G:103BINDING SITE FOR RESIDUE SO4 G 114
5AC5SOFTWARETHR H:80 , LYS H:81 , LYS H:103 , HOH H:120BINDING SITE FOR RESIDUE SO4 H 114
6AC6SOFTWAREHIS D:13 , ASN D:14 , LYS E:84BINDING SITE FOR RESIDUE SO4 E 115

(-) SS Bonds  (5, 5)

Asymmetric Unit
No.Residues
1D:9 -D:86
2E:9 -E:86
3F:9 -F:86
4G:9 -G:86
5H:9 -H:86

(-) Cis Peptide Bonds  (5, 5)

Asymmetric Unit
No.Residues
1Thr D:92 -Pro D:93
2Thr E:92 -Pro E:93
3Thr F:92 -Pro F:93
4Thr G:92 -Pro G:93
5Thr H:92 -Pro H:93

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (2, 10)

Asymmetric Unit (2, 10)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_ELBH_ECOLX_001 *H34RELBH_ECOLX  ---  ---D/E/F/G/HH13R
2UniProtVAR_ELBH_ECOLX_002 *T96AELBH_ECOLX  ---  ---D/E/F/G/HT75A
   * ID not provided by source

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 1 (2, 10)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_ELBH_ECOLX_001 *H34RELBH_ECOLX  ---  ---D/E/F/G/HH13R
2UniProtVAR_ELBH_ECOLX_002 *T96AELBH_ECOLX  ---  ---D/E/F/G/HT75A
   * ID not provided by source

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)
Biological Unit 2 (2, 20)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_ELBH_ECOLX_001 *H34RELBH_ECOLX  ---  ---D/E/F/G/HH13R
2UniProtVAR_ELBH_ECOLX_002 *T96AELBH_ECOLX  ---  ---D/E/F/G/HT75A
   * ID not provided by source

  SNP/SAP Summary Statistics (UniProtKB/Swiss-Prot)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1LTR)

(-) Exons   (0, 0)

(no "Exon" information available for 1LTR)

(-) 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 D from PDB  Type:PROTEIN  Length:108
 aligned with ELBH_ECOH1 | D0Z6T1 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:108
                                                                                                                                124     
                                    31        41        51        61        71        81        91       101       111       121  |     
           ELBH_ECOH1    22 APQSITELCSEYRNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEN-----   -
               SCOP domains d1ltrd_ D: Heat-labile toxin                                                                                 SCOP domains
               CATH domains 1ltrD00 D:1-108  [code=2.40.50.110, no name defined]                                                         CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ....hhhhhhh...eeeee......eeee........eeee.....eeee.........hhhhhhhhhhhhhhhhhh......eeeee......eeeeee........ Sec.struct. author
                 SAPs(SNPs) ------------R-------------------------------------------------------------A--------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------ Transcript
                 1ltr D   1 APQSITELCSEYHNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEKLYAGA 108
                                    10        20        30        40        50        60        70        80        90       100        

Chain D from PDB  Type:PROTEIN  Length:108
 aligned with ELBH_ECOLX | P0CK94 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:108
                                                                                                                                124     
                                    31        41        51        61        71        81        91       101       111       121  |     
           ELBH_ECOLX    22 APQSITELCSEYHNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEN-----   -
               SCOP domains d1ltrd_ D: Heat-labile toxin                                                                                 SCOP domains
               CATH domains 1ltrD00 D:1-108  [code=2.40.50.110, no name defined]                                                         CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ....hhhhhhh...eeeee......eeee........eeee.....eeee.........hhhhhhhhhhhhhhhhhh......eeeee......eeeeee........ Sec.struct. author
                 SAPs(SNPs) ------------R-------------------------------------------------------------A--------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------ Transcript
                 1ltr D   1 APQSITELCSEYHNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEKLYAGA 108
                                    10        20        30        40        50        60        70        80        90       100        

Chain E from PDB  Type:PROTEIN  Length:105
 aligned with ELBH_ECOH1 | D0Z6T1 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:105
                                                                                                                                124  
                                    31        41        51        61        71        81        91       101       111       121  |  
           ELBH_ECOH1    22 APQSITELCSEYRNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEN--   -
               SCOP domains d1ltre_ E: Heat-labile toxin                                                                              SCOP domains
               CATH domains 1ltrE00 E:1-105  [code=2.40.50.110, no name defined]                                                      CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhh...eeeee......eeee........eeee.....eeee..........hhhhhhhhhhhhhhhhh......eeeee......eeeeee..... Sec.struct. author
                 SAPs(SNPs) ------------R-------------------------------------------------------------A------------------------------ SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------- Transcript
                 1ltr E   1 APQSITELCSEYHNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEKLY 105
                                    10        20        30        40        50        60        70        80        90       100     

Chain E from PDB  Type:PROTEIN  Length:105
 aligned with ELBH_ECOLX | P0CK94 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:105
                                                                                                                                124  
                                    31        41        51        61        71        81        91       101       111       121  |  
           ELBH_ECOLX    22 APQSITELCSEYHNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEN--   -
               SCOP domains d1ltre_ E: Heat-labile toxin                                                                              SCOP domains
               CATH domains 1ltrE00 E:1-105  [code=2.40.50.110, no name defined]                                                      CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhh...eeeee......eeee........eeee.....eeee..........hhhhhhhhhhhhhhhhh......eeeee......eeeeee..... Sec.struct. author
                 SAPs(SNPs) ------------R-------------------------------------------------------------A------------------------------ SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------- Transcript
                 1ltr E   1 APQSITELCSEYHNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEKLY 105
                                    10        20        30        40        50        60        70        80        90       100     

Chain F from PDB  Type:PROTEIN  Length:109
 aligned with ELBH_ECOH1 | D0Z6T1 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:109
                                                                                                                                124      
                                    31        41        51        61        71        81        91       101       111       121  |      
           ELBH_ECOH1    22 APQSITELCSEYRNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEN------   -
               SCOP domains d1ltrf_ F: Heat-labile toxin                                                                                  SCOP domains
               CATH domains 1ltrF00 F:1-109  [code=2.40.50.110, no name defined]                                                          CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhh...eeeee......eeeee......eeeee.....eeee..........hhhhhhhhhhhhhhhhh......eeeee......eeeeee......... Sec.struct. author
                 SAPs(SNPs) ------------R-------------------------------------------------------------A---------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------- Transcript
                 1ltr F   1 APQSITELCSEYHNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEKLYAGAV 109
                                    10        20        30        40        50        60        70        80        90       100         

Chain F from PDB  Type:PROTEIN  Length:109
 aligned with ELBH_ECOLX | P0CK94 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:109
                                                                                                                                124      
                                    31        41        51        61        71        81        91       101       111       121  |      
           ELBH_ECOLX    22 APQSITELCSEYHNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEN------   -
               SCOP domains d1ltrf_ F: Heat-labile toxin                                                                                  SCOP domains
               CATH domains 1ltrF00 F:1-109  [code=2.40.50.110, no name defined]                                                          CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhh...eeeee......eeeee......eeeee.....eeee..........hhhhhhhhhhhhhhhhh......eeeee......eeeeee......... Sec.struct. author
                 SAPs(SNPs) ------------R-------------------------------------------------------------A---------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------- Transcript
                 1ltr F   1 APQSITELCSEYHNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEKLYAGAV 109
                                    10        20        30        40        50        60        70        80        90       100         

Chain G from PDB  Type:PROTEIN  Length:105
 aligned with ELBH_ECOH1 | D0Z6T1 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:105
                                                                                                                                124  
                                    31        41        51        61        71        81        91       101       111       121  |  
           ELBH_ECOH1    22 APQSITELCSEYRNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEN--   -
               SCOP domains d1ltrg_ G: Heat-labile toxin                                                                              SCOP domains
               CATH domains 1ltrG00 G:1-105  [code=2.40.50.110, no name defined]                                                      CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhh...eeeee......eeee........eeee.....eeee..........hhhhhhhhhhhhhhhhh......eeeee......eeeeee..... Sec.struct. author
                 SAPs(SNPs) ------------R-------------------------------------------------------------A------------------------------ SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------- Transcript
                 1ltr G   1 APQSITELCSEYHNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEKLY 105
                                    10        20        30        40        50        60        70        80        90       100     

Chain G from PDB  Type:PROTEIN  Length:105
 aligned with ELBH_ECOLX | P0CK94 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:105
                                                                                                                                124  
                                    31        41        51        61        71        81        91       101       111       121  |  
           ELBH_ECOLX    22 APQSITELCSEYHNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEN--   -
               SCOP domains d1ltrg_ G: Heat-labile toxin                                                                              SCOP domains
               CATH domains 1ltrG00 G:1-105  [code=2.40.50.110, no name defined]                                                      CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhh...eeeee......eeee........eeee.....eeee..........hhhhhhhhhhhhhhhhh......eeeee......eeeeee..... Sec.struct. author
                 SAPs(SNPs) ------------R-------------------------------------------------------------A------------------------------ SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------- Transcript
                 1ltr G   1 APQSITELCSEYHNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEKLY 105
                                    10        20        30        40        50        60        70        80        90       100     

Chain H from PDB  Type:PROTEIN  Length:105
 aligned with ELBH_ECOH1 | D0Z6T1 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:105
                                                                                                                                124  
                                    31        41        51        61        71        81        91       101       111       121  |  
           ELBH_ECOH1    22 APQSITELCSEYRNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEN--   -
               SCOP domains d1ltrh_ H: Heat-labile toxin                                                                              SCOP domains
               CATH domains 1ltrH00 H:1-105  [code=2.40.50.110, no name defined]                                                      CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhh...eeeee......eeee........eeee.....eeee........hhhhhhhhhhhhhhhhhhh......eeeee......eeeeee..... Sec.struct. author
                 SAPs(SNPs) ------------R-------------------------------------------------------------A------------------------------ SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------- Transcript
                 1ltr H   1 APQSITELCSEYHNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEKLY 105
                                    10        20        30        40        50        60        70        80        90       100     

Chain H from PDB  Type:PROTEIN  Length:105
 aligned with ELBH_ECOLX | P0CK94 from UniProtKB/Swiss-Prot  Length:124

    Alignment length:105
                                                                                                                                124  
                                    31        41        51        61        71        81        91       101       111       121  |  
           ELBH_ECOLX    22 APQSITELCSEYHNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEN--   -
               SCOP domains d1ltrh_ H: Heat-labile toxin                                                                              SCOP domains
               CATH domains 1ltrH00 H:1-105  [code=2.40.50.110, no name defined]                                                      CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhh...eeeee......eeee........eeee.....eeee........hhhhhhhhhhhhhhhhhhh......eeeee......eeeeee..... Sec.struct. author
                 SAPs(SNPs) ------------R-------------------------------------------------------------A------------------------------ SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------- Transcript
                 1ltr H   1 APQSITELCSEYHNTQIYTINDKILSYTESMAGKREMVIITFKSGATFQVEVPGSQHIDSQKKAIERMKDTLRITYLTETKIDKLCVWNNKTPNSIAAISMEKLY 105
                                    10        20        30        40        50        60        70        80        90       100     

   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  (1, 5)

Asymmetric Unit

(-) CATH Domains  (1, 5)

Asymmetric Unit
(-)
Class: Mainly Beta (13760)

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (2, 4)

Asymmetric Unit(hide GO term definitions)
Chain D,E,F,G,H   (ELBH_ECOH1 | D0Z6T1)
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.

Chain D,E,F,G,H   (ELBH_ECOLX | P0CK94)
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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(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        ELBH_ECOH1 | D0Z6T11b44 2o2l
        ELBH_ECOLX | P0CK941b44 2o2l 3efx

(-) Related Entries Specified in the PDB File

(no "Related Entries Specified in the PDB File" available for 1LTR)