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(-) Description

Title :  COMPLEX OF EETI-II WITH PORCINE TRYPSIN
 
Authors :  R. Kraetzner, A. Wentzel, H. Kolmar, I. Uson
Date :  12 Mar 01  (Deposition) - 26 Jul 04  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.50
Chains :  Asym./Biol. Unit :  E,I
Keywords :  Hydrolase Inhibitor, Complex (Serine Protease/Inhibitor), Trypsin, Squash Inhibitor, Cystine Knot, Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  R. Kraetzner, J. E. Debreczeni, T. Pape, T. R. Schneider, A. Wentzel, H. Kolmar, G. M. Sheldrick, I. Uson
Structure Of Ecballium Elaterium Trypsin Inhibitor Ii (Eeti-Ii): A Rigid Molecular Scaffold
Acta Crystallogr. , Sect. D V. 61 1255 2005
PubMed-ID: 16131759  |  Reference-DOI: 10.1107/S0907444905021207
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - TRYPSIN
    ChainsE
    EC Number3.4.21.4
    OrganPANCREAS
    Organism CommonPIG
    Organism ScientificSUS SCROFA
    Organism Taxid9823
    Other DetailsSIGMA
    SecretionSALIVA
 
Molecule 2 - TRYPSIN INHIBITOR II
    ChainsI
    MutationYES
    Organism CommonSQUIRTING CUCUMBER
    Organism ScientificECBALLIUM ELATERIUM
    Organism Taxid3679
    Other DetailsC-TERMINAL TAG OF 6 HISTIDINES
    SynonymEETI-II
    SyntheticYES

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit EI

Summary Information (see also Sequences/Alignments below)

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

Asymmetric/Biological Unit (1, 1)
No.NameCountTypeFull Name
1CA1Ligand/IonCALCIUM ION

(-) Sites  (1, 1)

Asymmetric Unit (1, 1)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREGLU E:70 , ASN E:72 , VAL E:75 , GLU E:80 , HOH E:2044 , HOH E:2050BINDING SITE FOR RESIDUE CA E1246

(-) SS Bonds  (8, 8)

Asymmetric/Biological Unit
No.Residues
1E:22 -E:157
2E:42 -E:58
3E:136 -E:201
4E:168 -E:182
5E:191 -E:220
6I:2 -I:19
7I:9 -I:21
8I:15 -I:27

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1H9H)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (1, 1)

Asymmetric/Biological Unit (1, 1)
  dbSNPPDB
No.SourceVariant IDVariantUniProt IDStatusIDChainVariant
1UniProtVAR_TRYP_PIG_001 *I20VTRYP_PIG  ---  ---EI27V
   * ID not provided by source

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

(-) PROSITE Motifs  (4, 4)

Asymmetric/Biological Unit (4, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1SQUASH_INHIBITORPS00286 Squash family of serine protease inhibitors signature.ITR2_ECBEL2-21  1I:2-21
2TRYPSIN_DOMPS50240 Serine proteases, trypsin domain profile.TRYP_PIG9-229  1E:16-243
3TRYPSIN_HISPS00134 Serine proteases, trypsin family, histidine active site.TRYP_PIG44-49  1E:53-58
4TRYPSIN_SERPS00135 Serine proteases, trypsin family, serine active site.TRYP_PIG179-190  1E:189-200

(-) Exons   (0, 0)

(no "Exon" information available for 1H9H)

(-) 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 E from PDB  Type:PROTEIN  Length:231
 aligned with TRYP_PIG | P00761 from UniProtKB/Swiss-Prot  Length:231

    Alignment length:231
                                   16                 34               50                                                                         125                   146                                  182        192            206                         
                                 15 |               33 |             49 |                                                                       124 |                 145 |                                181 |      191 |          205 |                         
                                  | 17        27     | |36        46  | |   55        65        75        85        95       105       115        |-|      134       144| |    153       163       173       182        |-|      201   | | 210       220       230 
            TRYP_PIG      9 IVGGYTC-AANSIPYQVSLNSGSHFC-GGSLINSQWVVSAAHC-YKSRIQVRLGEHNIDVLEGNEQFINAAKIITHPNFNGNTLDNDIMLIKLSSPATLNSRVATVSLPRSCAAAGTEC-LISGWGNTKSSGSSYPSLLQC-LKAPVLSDSSCKSSYPGQITGNMICVGFLEGGKDSC-QGDSGGPVVC-NGQLQGIVSWGYGC-AQKNKPGVYTKVCNYVNWIQQTIAAN  231
               SCOP domains d1h9he  E: Trypsin(ogen)                                                                                                                                                                                                                SCOP domains
               CATH domains 1h9hE0       1h9hE02 E:281120,E:233-245 Trppsin-like serine proteases                                    1h9hE01 E:16-77,E:121-232 Trypsin-lkke serine proteases                                                          1h9hE02       CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....ee.........eeeee...eeeeeeeeee..eeeehhhhhh....eeee............eeeeeeeeee.............eeeee........................eeeeeee...............eeeeeee..hhhhhhhhh.......eeee.................eee....eeeeeeeee..........eeeee...hhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ------------V-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                PROSITE (2) TRYPSIN_DOM  PDB: E:16-243 UniProt: 9-229                                                                                                                                                                                            -- PROSITE (2)
                PROSITE (1) -------------------------------------TRYPSI------------------------------------------------------------------------------------------------------------------------------------TRYPSIN_SER  ------------------------------------------- PROSITE (1)
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                1h9h E   16 IVGGYTCSAANSIPYQVSLNSGSHFCSGGSLINSQWVVSAAHCSYKSRIQVRLGEHNIDVLEGNEQFINAAKIITHPNFNGNTLDNDIMLIKLSSPATLNSRVATVSLPRSCAAAGTECSLISGWGNTKSSGSSYPSLLQCSLKAPVLSDSSCKSSYPGQITGNMICVGFLEGGKDSCSQGDSGGPVVCSNGQLQGIVSWGYGCSAQKNKPGVYTKVCNYVNWIQQTIAAN  245
                                    24        34|       45        55        64  ||    75        85        95       105       115       125|  ||  136       146       156       165       175      184B    |  192       201  ||   215 ||   |224       234       244 
                                              34|                              67|                                                     125|  ||                                                   184B 188B               204|     217|   |                        
                                               37                               69                                                      127  ||                                                                            209      219   |                        
                                                                                                                                           130|                                                                                        221B                        
                                                                                                                                            132                                                                                                                    

Chain I from PDB  Type:PROTEIN  Length:32
 aligned with ITR2_ECBEL | P12071 from UniProtKB/Swiss-Prot  Length:30

    Alignment length:32
                                           16           28  
                                         15 |         27 |  
                                    10    | | 19       |28  
          ITR2_ECBEL      1 GCPRILMRCKQDSDC-LAGCVCGPNGFC-GSP   30
               SCOP domains d1h9hi_ I: Tryssin inhibito      SCOP domains
               CATH domains -------------------------------- CATH domains
               Pfam domains -------------------------------- Pfam domains
         Sec.struct. author .ee.......hhhh......ee.....eee.. Sec.struct. author
                 SAPs(SNPs) -------------------------------- SAPs(SNPs)
                    PROSITE -SQUASH_INHIBITOR     ---------- PROSITE
                 Transcript -------------------------------- Transcript
                1h9h I    1 GCPRILIRCKQDSDCSLAGCVCGPNGFCSGSP   30
                                    10        19        28  

   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  (2, 2)

Asymmetric/Biological Unit

(-) CATH Domains  (1, 2)

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

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1H9H)

(-) Gene Ontology  (14, 15)

Asymmetric/Biological Unit(hide GO term definitions)
Chain E   (TRYP_PIG | P00761)
molecular function
    GO:0016787    hydrolase activity    Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0008233    peptidase activity    Catalysis of the hydrolysis of a peptide bond. A peptide bond is a covalent bond formed when the carbon atom from the carboxyl group of one amino acid shares electrons with the nitrogen atom from the amino group of a second amino acid.
    GO:0004252    serine-type endopeptidase activity    Catalysis of the hydrolysis of internal, alpha-peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
    GO:0008236    serine-type peptidase activity    Catalysis of the hydrolysis of peptide bonds in a polypeptide chain by a catalytic mechanism that involves a catalytic triad consisting of a serine nucleophile that is activated by a proton relay involving an acidic residue (e.g. aspartate or glutamate) and a basic residue (usually histidine).
biological process
    GO:0007586    digestion    The whole of the physical, chemical, and biochemical processes carried out by multicellular organisms to break down ingested nutrients into components that may be easily absorbed and directed into metabolism.
    GO:0006508    proteolysis    The hydrolysis of proteins into smaller polypeptides and/or amino acids by cleavage of their peptide bonds.
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.
    GO:0005615    extracellular space    That part of a multicellular organism outside the cells proper, usually taken to be outside the plasma membranes, and occupied by fluid.

Chain I   (ITR2_ECBEL | P12071)
molecular function
    GO:0004866    endopeptidase inhibitor activity    Stops, prevents or reduces the activity of an endopeptidase, any enzyme that hydrolyzes nonterminal peptide bonds in polypeptides.
    GO:0030414    peptidase inhibitor activity    Stops, prevents or reduces the activity of a peptidase, any enzyme that catalyzes the hydrolysis peptide bonds.
    GO:0004867    serine-type endopeptidase inhibitor activity    Stops, prevents or reduces the activity of serine-type endopeptidases, enzymes that catalyze the hydrolysis of nonterminal peptide bonds in a polypeptide chain; a serine residue (and a histidine residue) are at the active center of the enzyme.
biological process
    GO:0010951    negative regulation of endopeptidase activity    Any process that decreases the frequency, rate or extent of endopeptidase activity, the endohydrolysis of peptide bonds within proteins.
    GO:0010466    negative regulation of peptidase activity    Any process that stops or reduces the rate of peptidase activity, the hydrolysis of peptide bonds within proteins.
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
        ITR2_ECBEL | P120711h9i 1w7z 2c4b 2eti 2it7 2let
        TRYP_PIG | P007611aks 1an1 1avw 1avx 1c9p 1d3o 1df2 1eja 1ept 1ewu 1fmg 1fn6 1fni 1h9i 1ldt 1lt2 1mct 1qqu 1s5s 1s6f 1s6h 1s81 1s82 1s83 1s84 1s85 1tfx 1tx6 1uhb 1v6d 1yf4 1z7k 2a31 2a32 3myw 4an7 4doq

(-) Related Entries Specified in the PDB File

1aks CRYSTAL STRUCTURE OF THE FIRST ACTIVE AUTOLYSATE FORM OF THE PORCINE ALPHA TRYPSIN
1an1 LEECH-DERIVED TRYPTASE INHIBITOR/TRYPSIN COMPLEX
1avw COMPLEX PORCINE PANCREATIC TRYPSIN/SOYBEAN TRYPSIN INHIBITOR, ORTHORHOMBIC CRYSTAL FORM
1avx COMPLEX PORCINE PANCREATIC TRYPSIN/SOYBEAN TRYPSIN INHIBITOR, TETRAGONAL CRYSTAL FORM
1c9p COMPLEX OF BDELLASTASIN WITH PORCINE TRYPSIN
1d3o KNOWLEDGE BASED MODEL OF A SERINE PROTEASE INHIBITOR OF CUCURBITACEAE FAMILY (THEORETICAL MODEL) BOUND TO TRYPSIN
1df2 KNOWLEDGE BASED MODEL OF A SERINE PROTEASE INHIBITOR OF CUCURBITACEAE FAMILY (THEORETICAL MODEL) BOUND TO TRYPSIN
1eja STRUCTURE OF PORCINE TRYPSIN COMPLEXED WITH BDELLASTASIN, AN ANTISTASIN-TYPE INHIBITOR
1ept PORCINE E-TRYPSIN
1ewu KNOWLEDGE BASED MODEL OF A SERINE PROTEASE INHIBITOR OFCUCURBITACEAE FAMILY (THEORETICAL MODEL) BOUND TO TRYPSIN.
1fmg CRYSTAL STRUCTURE OF PORCINE BETA TRYPSIN WITH 0.04%POLYDOCANOL
1fn6 CRYSTAL STRUCTURE OF PORCINE BETA TRYPSIN WITH 0.1%POLYDOCANOL
1fni CRYSTAL STRUCTURE OF PORCINE BETA TRYPSIN WITH 0.01%POLYDOCANOL
1h9h COMPLEX OF EETI-II WITH PORCINE TRYPSIN
1ldt COMPLEX OF LEECH-DERIVED TRYPTASE INHIBITOR WITH PORCINE TRYPSIN
1lt2 PREDICTION OF TERTIARY STRUCTURE OF LEUCAENA LEUCOCEPHALATRYPSIN INHIBITOR/TRYPSIN COMPLEX.
1mct TRYPSIN COMPLEXED WITH INHIBITOR FROM BITTER GOURD
1qqu CRYSTAL STRUCTURE OF PORCINE BETA TRYPSIN WITH BOUND ACETATE ION
1r0t CRYSTAL STRUCTURE OF TRYPSIN-SECOND DOMAIN OF THE OVOMUCOIDTURKEY EGG WHITE INHIBITOR COMPLEX
1s5s PORCINE TRYPSIN COMPLEXED WITH GUANIDINE-3- PROPANOLINHIBITOR
1s6f PORCINE TRYPSIN COVALENT COMPLEX WITH BORATE AND GUANIDINE-3 INHIBITOR
1s6h PORCINE TRYPSIN COMPLEXED WITH GUANIDINE-3- PROPANOLINHIBITOR
1s81 PORCINE TRYPSIN WITH NO INHIBITOR BOUND
1s82 PORCINE TRYPSIN COMPLEXED WITH BORATE AND ETHYLENE GLYCOL
1s83 PORCINE TRYPSIN COMPLEXED WITH 4-AMINO PROPANOL
1s84 PORCINE TRYPSIN COVALENT COMPLEX WITH 4- AMINO BUTANOL,BORATE AND ETHYLENE GLYCOL
1s85 PORCINE TRYPSIN COMPLEXED WITH P-HYDROXYMETHYL BENZAMIDINEAND BORATE
1tfx COMPLEX OF THE SECOND KUNITZ DOMAIN OF TISSUE FACTOR PATHWAY INHIBITOR WITH PORCINE TRYPSIN