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(-) Description

Title :  CRYSTAL STRUCTURE OF THE BIFUNCTIONAL SOYBEAN BOWMAN-BIRK INHIBITOR AT 0.28 NM RESOLUTION. STRUCTURAL PECULIARITIES IN A FOLDED PROTEIN CONFORMATION
 
Authors :  R. H. Voss, U. Ermler, L. O. Essen, G. Wenzl, Y. M. Kim, P. Flecker
Date :  29 Oct 01  (Deposition) - 16 Nov 01  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.80
Chains :  Asym./Biol. Unit :  A
Keywords :  Tripple-Stranded Beta Hairpin, Double-Headed, Hydrolase Inhibitor (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  R. H. Voss, U. Ermler, L. O. Essen, G. Wenzl, Y. M. Kim, P. Flecker
Crystal Structure Of The Bifunctional Soybean Bowman-Birk Inhibitor At 0. 28-Nm Resolution. Structural Peculiarities In A Folded Protein Conformation.
Eur. J. Biochem. V. 242 122 1996
PubMed-ID: 8954162  |  Reference-DOI: 10.1111/J.1432-1033.1996.0122R.X
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - BOWMAN-BIRK TYPE PROTEINASE INHIBITOR
    Chains: A
    Organism Common: SOYBEAN
    Organism Scientific: GLYCINE MAX
    Organism Taxid: 3847
    Other Details: FREE FORM
    Synonym: BBI

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 1K9B)

(-) Sites  (0, 0)

(no "Site" information available for 1K9B)

(-) SS Bonds  (7, 7)

Asymmetric/Biological Unit
No.Residues
1A:8 -A:62
2A:9 -A:24
3A:12 -A:58
4A:14 -A:22
5A:32 -A:39
6A:36 -A:51
7A:41 -A:49

(-) Cis Peptide Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1Asn A:18 -Pro A:19
2Tyr A:45 -Pro A:46

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1K9B)

(-) PROSITE Motifs  (1, 1)

Asymmetric/Biological Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1BOWMAN_BIRKPS00281 Bowman-Birk serine protease inhibitors family signature.IBB1_SOYBN63-78  1A:24-39

(-) Exons   (0, 0)

(no "Exon" information available for 1K9B)

(-) 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:58
 aligned with IBB1_SOYBN | P01055 from UniProtKB/Swiss-Prot  Length:110

    Alignment length:58
                                    54        64        74        84        94        
           IBB1_SOYBN    45 KPCCDQCACTKSNPPQCRCSDMRLNSCHSACKSCICALSYPAQCFCVDITDFCYEPCK 102
               SCOP domains d1k9ba_ A: Bowman-Birk inhibitor, BBI                      SCOP domains
               CATH domains 1k9bA00 A:6-63                                             CATH domains
           Pfam domains (1) -----------------------------Bowman-Birk_leg-1k9bA01  ---- Pfam domains (1)
           Pfam domains (2) -----------------------------Bowman-Birk_leg-1k9bA02  ---- Pfam domains (2)
         Sec.struct. author ......eee.......eeeeeeee.........eee......eeee............ Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------BOWMAN_BIRK     ------------------------ PROSITE
                 Transcript ---------------------------------------------------------- Transcript
                 1k9b A   6 KPCCDQCACTKSNPPQCRCSDMRLNSCHSACKSCICALSYPAQCFCVDITDFCYEPCK  63
                                    15        25        35        45        55
   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
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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  (1, 1)

Asymmetric/Biological Unit
(-)
Class: Small proteins (3458)

(-) CATH Domains  (1, 1)

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

(-) Pfam Domains  (1, 2)

Asymmetric/Biological Unit
(-)
Clan: no clan defined [family: Bowman-Birk_leg] (11)

(-) Gene Ontology  (5, 5)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (IBB1_SOYBN | P01055)
molecular function
    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
        IBB1_SOYBN | P01055: 1bbi 1d6r 2bbi 5j4q 5j4s

(-) Related Entries Specified in the PDB File

1bbi THREE-DIMENSIONAL STRUCTURE OF SOYBEAN TRYPSIN/CHYMOTRYPSIN BOWMAN-BIRK INHIBITOR IN SOLUTION
1c2a CRYSTAL STRUCTURE OF BARLEY BBI
1d6r BOWMAN-BIRK INHIBITOR IN TERNARY COMPLEX WITH BOVINE TRYPSIN
1pbi DIMERIC CRYSTAL STRUCTURE OF A BOWMAN-BIRK PROTEASE INHIBITOR FROM PEA SEEDS
1pi2 REACTIVE SITES OF AN ANTICARCINOGENIC BOWMAN-BIRK PROTEINASE INHIBITOR ARE SIMILAR TO OTHER TRYPSIN INHIBITORS