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(-) Description

Title :  CRYSTAL STRUCTURE OF MUTANT FORM A OF A PECTIN METHYLESTERASE INHIBITOR FROM ARABIDOPSIS
 
Authors :  M. Hothorn, S. Wolf, P. Aloy, S. Greiner, K. Scheffzek
Date :  19 Aug 04  (Deposition) - 28 Dec 04  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.50
Chains :  Asym./Biol. Unit :  A
Keywords :  Four-Helix Bundle, Alpha Hairpin, Disulfide Bridge, Domain- Swapping, Linker, Proline, Mutant, Protein Binding (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  M. Hothorn, S. Wolf, P. Aloy, S. Greiner, K. Scheffzek
Structural Insights Into The Target Specificity Of Plant Invertase And Pectin Methylesterase Inhibitory Proteins
Plant Cell V. 16 3437 2004
PubMed-ID: 15528298  |  Reference-DOI: 10.1105/TPC.104.025684
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - INVERTASE/PECTIN METHYLESTERASE INHIBITOR FAMILY PROTEIN
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PETM 20
    Expression System Strain: ORIGAMI (DE3)
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Fragment: RESIDUES 1-149
    Gene: AT1G48020
    Mutation: YES
    Organism Common: THALE CRESS
    Organism Scientific: ARABIDOPSIS THALIANA
    Organism Taxid: 3702
    Synonym: PECTIN METHYLESTERASE INHIBITOR
    Tissue: APOPLAST-CELL WALL

 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 1X91)

(-) Sites  (0, 0)

(no "Site" information available for 1X91)

(-) SS Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1A:8 -A:17
2A:71 -A:111

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1X91)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1X91)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1X91)

(-) Exons   (0, 0)

(no "Exon" information available for 1X91)

(-) 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:149
 aligned with PMEI1_ARATH | Q9LNF2 from UniProtKB/Swiss-Prot  Length:176

    Alignment length:149
                                    37        47        57        67        77        87        97       107       117       127       137       147       157       167         
          PMEI1_ARATH    28 SSEMSTICDKTLNPSFCLKFLNTKFASPNLQALAKTTLDSTQARATQTLKKLQSIIDGGVDPRSKLAYRSCVDEYESAIGNLEEAFEHLASGDGMGMNMKVSAALDGADTCLDDVKRLRSVDSSVVNNSKTIKNLCGIALVISNMLPRN 176
               SCOP domains d1x91a_ A: Pectin methylesterase inhibitor 1, PMEI1                                                                                                   SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .....hhhhhh.hhhhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1x91 A   1 SSEMSTICDKTLNPSFCLKFLNTKFASANLQALAKTTLDSTQARATQTLKKLQSIIDGGVDPRSKLAYRSCVDEYESAIGNLEEAFEHLASGDGMGMNMKVSAALDGADTCLDDVKRLRSVDSSVVNNSKTIKNLCGIALVISNMLPRN 149
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140
   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)

Asymmetric/Biological Unit
(-)
Class: All alpha proteins (14657)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 1X91)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1X91)

(-) Gene Ontology  (6, 6)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (PMEI1_ARATH | Q9LNF2)
molecular function
    GO:0004857    enzyme inhibitor activity    Binds to and stops, prevents or reduces the activity of an enzyme.
    GO:0046910    pectinesterase inhibitor activity    Stops, prevents or reduces the activity of any pectinesterase enzyme.
biological process
    GO:0043086    negative regulation of catalytic activity    Any process that stops or reduces the activity of an enzyme.
    GO:0009860    pollen tube growth    Growth of pollen via tip extension of the intine wall.
cellular component
    GO:0071944    cell periphery    The part of a cell encompassing the cell cortex, the plasma membrane, and any external encapsulating structures.
    GO:0090404    pollen tube tip    The region at growing end of the pollen tube cell, where polarized growth occurs.

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  1x91
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 Related Entries

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

UniProtKB/Swiss-Prot
        PMEI1_ARATH | Q9LNF2: 1x8z 1x90

(-) Related Entries Specified in the PDB File

1rj1 STRUCTURALLY RELATED INVERTASE INHIBITOR
1x8z WILD-TYPE PECTIN METHYLESTERASE INHIBITOR STRUCTURE
1x90 PECTIN METHYLESTERASE INHIBITOR MUTANT FORM B STRUCTURE