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(-) Description

Title :  3D STRUCTURE OF THE M8L MUTANT OF SQUASH TRYPSIN INHIBITOR CMTI-I
 
Authors :  P. Sledz, K. Bolewska, A. Bierzynski, I. Zhukov
Date :  30 May 07  (Deposition) - 19 Jun 07  (Release) - 24 Feb 09  (Revision)
Method :  SOLUTION NMR
Resolution :  NOT APPLICABLE
Chains :  NMR Structure  :  A  (20x)
Keywords :  Hydrolase Inhibitor, Serine Protease Inhibitor, Hydrolase Inhibitor Hydrolase, Trypsin Inhibitor, Protease Inhibitor (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  I. Zhukov, L. Jaroszewski, A. Bierzynski
Conservative Mutation Met8Leu Affects The Folding Process And Structural Stability Of Squash Trypsin Inhibitor Cmti-I
Protein Sci. V. 9 273 2000
PubMed-ID: 10716179
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - TRYPSIN INHIBITOR 1
    Chains: A
    Mutation: YES
    Organism Common: PUMPKIN
    Organism Scientific: CUCURBITA MAXIMA
    Organism Taxid: 3661
    Synonym: TRYPSIN INHIBITOR I, CMTI-I, ITD-I
    Synthetic: YES

 Structural Features

(-) Chains, Units

  
NMR Structure (20x): 

Summary Information (see also Sequences/Alignments below)

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

(no "Ligand,Modified Residues,Ions" information available for 2V1V)

(-) 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    
   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:29
 aligned with ITR1_CUCMA | P01074 from UniProtKB/Swiss-Prot  Length:29

    Alignment length:29
                                    10        20         
            ITR1_CUCMA    1 RVCPRILMECKKDSDCLAECVCLEHGYCG 29
               SCOP domains d2v1va1 A:1-29                SCOP domains
               CATH domains ----------------------------- CATH domains
               Pfam domains Squash-2v1vA01 A:1-29         Pfam domains
         Sec.struct. author .......eee..hhh.....eee...eee Sec.struct. author
                 SAPs(SNPs) ----------------------------- SAPs(SNPs)
                    PROSITE --SQUASH_INHIBITOR    ------- PROSITE
                 Transcript ----------------------------- Transcript
                  2v1v A  1 RVCPRILLECKKDSDCLAECVCLEHGYCG 29
                                    10        20
   Legend:   → Mismatch (orange background)
  - → Gap (green background, '-', border residues have a numbering label)
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  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 2V1V)

(-) Pfam Domains  (1, 1)

NMR Structure
(-)
Clan: Pept_Inhib_IE (9)

(-) 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 2cti 2sta 3cti

(-) Related Entries Specified in the PDB File

1bxj 3D STRUCTURE OF THE M8L MUTANT OF SQUASH TRYPSIN INHIBITOR CMTI-I, NMR, 6 STUCTURES
1cti TRYPSIN INHIBITOR (NMR, MINIMIZED MEAN STRUCTURE)
1lu0 ATOMIC RESOLUTION STRUCTURE OF SQUASH TRYPSIN INHIBITOR:UNEXPECTED METAL COORDINATION
1ppe TRYPSIN COMPLEX WITH (CUCURBITA MAXIMA) TRYPSIN INHIBITOR (CMTI-I)
2cti TRYPSIN INHIBITOR (NMR, 5 SIMULATED ANNEALING STRUCTURES)
2sta ANIONIC SALMON TRYPSIN IN COMPLEX WITH SQUASH SEED INHIBITOR (CUCURBITA MAXIMA TRYPSIN INHIBITOR I)
3cti TRYPSIN INHIBITOR (NMR, 6 SIMULATED ANNEALING STRUCTURES) (CMTI I)