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(-) Description

Title :  DIRECT OBSERVATION OF BETTER HYDRATION AT THE N-TERMINUS OF AN ALPHA-HELIX WITH GLYCINE RATHER THAN ALANINE AS N-CAP
 
Authors :  Y. Harpaz, N. Elmasry, A. R. Fersht, K. Henrick
Date :  10 Jan 93  (Deposition) - 31 Jan 94  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.70
Chains :  Asym./Biol. Unit :  I
Keywords :  Proteinase Inhibitor(Chymotrypsin) (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  Y. Harpaz, N. Elmasry, A. R. Fersht, K. Henrick
Direct Observation Of Better Hydration At The N Terminus Of An Alpha-Helix With Glycine Rather Than Alanine As The N-Cap Residue.
Proc. Natl. Acad. Sci. Usa V. 91 311 1994
PubMed-ID: 8278384  |  Reference-DOI: 10.1073/PNAS.91.1.311
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - CHYMOTRYPSIN INHIBITOR 2
    Chains: I
    Engineered: YES
    Organism Scientific: HORDEUM VULGARE
    Organism Taxid: 4513

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : I

Summary Information (see also Sequences/Alignments below)

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

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

(-) Sites  (1, 1)

Asymmetric Unit (1, 1)
No.NameEvidenceResiduesDescription
1RSBUNKNOWNMET I:59 , GLU I:60NULL

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1YPC)

(-) 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)

Asymmetric/Biological Unit (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1POTATO_INHIBITORPS00285 Potato inhibitor I family signature.ICI2_HORVU25-36  1I:24-35

(-) Exons   (0, 0)

(no "Exon" information available for 1YPC)

(-) 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 I from PDB  Type:PROTEIN  Length:64
 aligned with ICI2_HORVU | P01053 from UniProtKB/Swiss-Prot  Length:84

    Alignment length:64
                                    30        40        50        60        70        80    
            ICI2_HORVU   21 LKTEWPELVGKSVEEAKKVILQDKPEAQIIVLPVGTIVTMEYRIDRVRLFVDKLDNIAQVPRVG 84
               SCOP domains d1ypci_ I: Chymotrypsin inhibitor CI-2                           SCOP domains
               CATH domains 1ypcI00 I:20-83 Trypsin Inhibitor V, subunit A                   CATH domains
               Pfam domains -potato_inhibit-1ypcI01 I:21-83                                  Pfam domains
         Sec.struct. author ...........hhhhhhhhhhhhh...eeeeeee..........eeeeeeee..........ee Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----POTATO_INHIB------------------------------------------------ PROSITE
                 Transcript ---------------------------------------------------------------- Transcript
                  1ypc I 20 MKTEWPELVGKSVAAAKKVILQDKPEAQIIVLPVGTIVTMEYRIDRVRLFVDKLDNIAQVPRVG 83
                                    29        39        49        59        69        79
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 Classification and Annotation

(-) SCOP Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Class: Alpha and beta proteins (a+b) (23004)

(-) CATH Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Class: Alpha Beta (26913)

(-) Pfam Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Clan: CI-2 (32)

(-) Gene Ontology  (5, 5)

Asymmetric/Biological Unit(hide GO term definitions)
Chain I   (ICI2_HORVU | P01053)
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.
    GO:0009611    response to wounding    Any process that results in a change in state or activity of a cell or an organism (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating damage to the organism.

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 Related Entries

(-) Entries Sharing at Least One Protein Chain (UniProt ID)

UniProtKB/Swiss-Prot
        ICI2_HORVU | P01053: 1ciq 1cir 1cis 1coa 1cq4 1lw6 1ypa 1ypb 2ci2 2sni 3ci2 5fbz 5ffn

(-) Related Entries Specified in the PDB File

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