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(-) Description

Title :  STRUCTURE AND FUNCTION STUDY OF RICE BIFUNCTIONAL ALPHA-AMYLASE/SUBTILISIN INHIBITOR FROM ORYZA SATIVA
 
Authors :  W. Y. Peng, Y. H. Lin, Y. C. Huang, H. H. Guan, Y. C. Hsieh, C. J. Chen
Date :  18 Jul 07  (Deposition) - 22 Jul 08  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.80
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Keywords :  Rasi, Amylase Inhibitor, Subtilisin Inhibitor, Alpha- Amylase Inhibitor, Protease Inhibitor, Serine Protease Inhibitor, Hydrolase Inhibitor (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  W. Y. Peng, Y. H. Lin, Y. C. Huang, H. H. Guan, Y. C. Hsieh, M. Y. Liu, T. Chang, C. J. Chen
Structure And Function Study Of Rice Bifunctional Alpha-Amylase/Subtilisin Inhibitor From Oryza Sativa
To Be Published
PubMed: search
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - ALPHA-AMYLASE/SUBTILISIN INHIBITOR
    ChainsA, B
    Organism CommonRICE
    Organism ScientificORYZA SATIVA SUBSP. JAPONICA
    Organism Taxid39947
    StrainJAPONICA CULTIVAR-GROUP
    SynonymRASI

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit AB
Biological Unit 1 (1x)A 
Biological Unit 2 (1x) B

Summary Information (see also Sequences/Alignments below)

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

(no "Ligand,Modified Residues,Ions" information available for 2QN4)

(-) Sites  (0, 0)

(no "Site" information available for 2QN4)

(-) SS Bonds  (4, 4)

Asymmetric Unit
No.Residues
1A:41 -A:90
2A:140 -A:144
3B:41 -B:90
4B:140 -B:144

(-) Cis Peptide Bonds  (4, 4)

Asymmetric Unit
No.Residues
1Cys A:41 -Pro A:42
2Gln A:162 -Pro A:163
3Cys B:41 -Pro B:42
4Gln B:162 -Pro B:163

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2QN4)

(-) PROSITE Motifs  (1, 2)

Asymmetric Unit (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1SOYBEAN_KUNITZPS00283 Soybean trypsin inhibitor (Kunitz) protease inhibitors family signature.IAAS_ORYSJ27-43
 
  2A:5-21
B:5-21
Biological Unit 1 (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1SOYBEAN_KUNITZPS00283 Soybean trypsin inhibitor (Kunitz) protease inhibitors family signature.IAAS_ORYSJ27-43
 
  1A:5-21
-
Biological Unit 2 (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1SOYBEAN_KUNITZPS00283 Soybean trypsin inhibitor (Kunitz) protease inhibitors family signature.IAAS_ORYSJ27-43
 
  1-
B:5-21

(-) Exons   (0, 0)

(no "Exon" information available for 2QN4)

(-) Sequences/Alignments

Asymmetric 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:159
 aligned with IAAS_ORYSJ | P29421 from UniProtKB/Swiss-Prot  Length:200

    Alignment length:172
                                    32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192  
           IAAS_ORYSJ    23 APPPVYDTEGHELSADGSYYVLPASPGHGGGLTMAPRVLPCPLLVAQETDERRKGFPVRFTPWGGAAAPEDRTIRVSTDVRIRFNAATICVQSTEWHVGDEPLTGARRVVTGPLIGPSPSGRENAFRVEKYGGGYKLVSCRDSCQDLGVSRDGARAWLGASQPPHVVVFKKA 194
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains 2qn4A00 A:1-172  [code=2.80.10.50, no name defined]                                                                                                                          CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..................eeeee........eeee........eeee..........eeeee.hhhhh...........eeeee............ee.-------..ee....------.....eeeeee..eeeeee.....eeeeeeee..eeeeee......eeeee. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----SOYBEAN_KUNITZ   ------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2qn4 A   1 APPPVYDTEGHELSADGSYYVLPASPGHGGGLTMAPRVLPCPLLVAQETDERRKGFPVRFTPWGGAAAPEDRTIRVSTDVRIRFNAATICVQSTEWHVG-------RRVVTGPL------GRENAFRVEKYGGGYKLVSCRDSCQDLGVSRDGARAWLGASQPPHVVVFKKA 172
                                    10        20        30        40        50        60        70        80        90        |-      |110   |     -|      130       140       150       160       170  
                                                                                                                             99     107    114    121                                                   

Chain B from PDB  Type:PROTEIN  Length:159
 aligned with IAAS_ORYSJ | P29421 from UniProtKB/Swiss-Prot  Length:200

    Alignment length:172
                                    32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192  
           IAAS_ORYSJ    23 APPPVYDTEGHELSADGSYYVLPASPGHGGGLTMAPRVLPCPLLVAQETDERRKGFPVRFTPWGGAAAPEDRTIRVSTDVRIRFNAATICVQSTEWHVGDEPLTGARRVVTGPLIGPSPSGRENAFRVEKYGGGYKLVSCRDSCQDLGVSRDGARAWLGASQPPHVVVFKKA 194
               SCOP domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains 2qn4B00 B:1-172  [code=2.80.10.50, no name defined]                                                                                                                          CATH domains
           Pfam domains (1) ---Kunitz_legume-2qn4B01 B:4-171                                                                                                                                           - Pfam domains (1)
           Pfam domains (2) ---Kunitz_legume-2qn4B02 B:4-171                                                                                                                                           - Pfam domains (2)
         Sec.struct. author ..................eeeee........eeee........eeee..........eeeee.hhhhh...........eeeee............ee.-------..ee....------.....eeeeee..eeeeee.....eeeeeeee..eeeeee......eeeee. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----SOYBEAN_KUNITZ   ------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2qn4 B   1 APPPVYDTEGHELSADGSYYVLPASPGHGGGLTMAPRVLPCPLLVAQETDERRKGFPVRFTPWGGAAAPEDRTIRVSTDVRIRFNAATICVQSTEWHVG-------RRVVTGPL------GRENAFRVEKYGGGYKLVSCRDSCQDLGVSRDGARAWLGASQPPHVVVFKKA 172
                                    10        20        30        40        50        60        70        80        90        |-      |110   |     -|      130       140       150       160       170  
                                                                                                                             99     107    114    121                                                   

   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  (0, 0)

(no "SCOP Domain" information available for 2QN4)

(-) CATH Domains  (1, 2)

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

(-) Pfam Domains  (1, 2)

Asymmetric Unit
(-)
Clan: Trefoil (131)

(-) Gene Ontology  (6, 6)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (IAAS_ORYSJ | P29421)
molecular function
    GO:0015066    alpha-amylase inhibitor activity    Stops, prevents or reduces the activity of alpha-amylase.
    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.

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  Cis Peptide Bonds
    Cys A:41 - Pro A:42   [ RasMol ]  
    Cys B:41 - Pro B:42   [ RasMol ]  
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 Related Entries

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(-) Related Entries Specified in the PDB File

1ava 2iwt