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(-) Description

Title :  DETERMINATION OF THE COMPLETE THREE-DIMENSIONAL STRUCTURE OF THE TRYPSIN INHIBITOR FROM SQUASH SEEDS IN AQUEOUS SOLUTION BY NUCLEAR MAGNETIC RESONANCE AND A COMBINATION OF DISTANCE GEOMETRY AND DYNAMICAL SIMULATED ANNEALING
 
Authors :  T. A. Holak, D. Gondol, J. Otlewski, T. Wilusz
Date :  28 Aug 90  (Deposition) - 15 Jan 92  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (5x)
Keywords :  Proteinase Inhibitor (Trypsin) (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  T. A. Holak, D. Gondol, J. Otlewski, T. Wilusz
Determination Of The Complete Three-Dimensional Structure Of The Trypsin Inhibitor From Squash Seeds In Aqueous Solution By Nuclear Magnetic Resonance And A Combination Of Distance Geometry And Dynamical Simulated Annealing.
J. Mol. Biol. V. 210 635 1989
PubMed-ID: 2614837  |  Reference-DOI: 10.1016/0022-2836(89)90137-X
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - TRYPSIN INHIBITOR
    Chains: A
    Engineered: YES
    Organism Common: WINTER SQUASH
    Organism Scientific: CUCURBITA MAXIMA
    Organism Taxid: 3661

 Structural Features

(-) Chains, Units

  
NMR Structure (5x): 

Summary Information (see also Sequences/Alignments below)

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

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(-) Sites  (0, 0)

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(-) SS Bonds  (3, 3)

NMR Structure
No.Residues
1A:3 -A:20
2A:10 -A:22
3A:16 -A:28

(-) Cis Peptide Bonds  (0, 0)

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 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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(-) PROSITE Motifs  (1, 1)

NMR Structure (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1SQUASH_INHIBITORPS00286 Squash family of serine protease inhibitors signature.ITR1_CUCMA3-22  1A:3-22

(-) Exons   (0, 0)

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(-) Sequences/Alignments

NMR Structure
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
  UniProt sequence: complete  aligned part    
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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:29
 aligned with ITR1_CUCMA | P01074 from UniProtKB/Swiss-Prot  Length:29

    Alignment length:29
                                    10        20         
            ITR1_CUCMA    1 RVCPRILMECKKDSDCLAECVCLEHGYCG 29
               SCOP domains d2ctia_ A: Trypsin inhibitor  SCOP domains
               CATH domains ----------------------------- CATH domains
               Pfam domains ----------------------------- Pfam domains
         Sec.struct. author ...........hhhhh............. Sec.struct. author
                 SAPs(SNPs) ----------------------------- SAPs(SNPs)
                    PROSITE --SQUASH_INHIBITOR    ------- PROSITE
                 Transcript ----------------------------- Transcript
                  2cti A  1 RVCPRILMECKKDSDCLAECVCLEHGYCG 29
                                    10        20
   Legend:   → Mismatch (orange background)
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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)

NMR Structure
(-)
Class: Small proteins (3458)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2CTI)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2CTI)

(-) Gene Ontology  (6, 6)

NMR Structure(hide GO term definitions)
Chain A   (ITR1_CUCMA | P01074)
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
        ITR1_CUCMA | P01074: 1cti 1lu0 1ppe 2sta 2v1v 3cti

(-) Related Entries Specified in the PDB File

1cti