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(-) Description

Title :  CRYSTAL STRUCTURE OF MUTANT FORM B 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) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.68
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Biol. Unit 3:  A  (3x)
Biol. Unit 4:  B  (3x)
Keywords :  Four-Helix Bundle, Alpha Hairpin, Disulfide Bridge, 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

(-) Compounds

Molecule 1 - INVERTASE/PECTIN METHYLESTERASE INHIBITOR FAMILY PROTEIN
    ChainsA, B
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPETM20
    Expression System StrainORIGAMI (DE3)
    Expression System Taxid562
    Expression System Vector TypePLASMID
    FragmentRESIDUES 1-149
    GeneAT1G48020
    MutationYES
    Organism CommonTHALE CRESS
    Organism ScientificARABIDOPSIS THALIANA
    Organism Taxid3702
    SynonymPECTIN METHYLESTERASE INHIBITOR
    TissueAPOPLAST-CELL WALL

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit AB
Biological Unit 1 (1x)A 
Biological Unit 2 (1x) B
Biological Unit 3 (3x)A 
Biological Unit 4 (3x) B

Summary Information (see also Sequences/Alignments below)

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

(no "Ligand,Modified Residues,Ions" information available for 1X90)

(-) Sites  (0, 0)

(no "Site" information available for 1X90)

(-) SS Bonds  (4, 4)

Asymmetric Unit
No.Residues
1A:8 -A:17
2A:71 -A:111
3B:8 -B:17
4B:71 -B:111

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1X90)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1X90)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1X90)

(-) Exons   (0, 0)

(no "Exon" information available for 1X90)

(-) Sequences/Alignments

Asymmetric Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
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  UniProt sequence: complete  aligned part    
   Show mapping: SCOP domains CATH domains Pfam domains Secondary structure (by author)
SAPs(SNPs) PROSITE motifs Exons
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Chain A from PDB  Type:PROTEIN  Length:147
 aligned with PMEI1_ARATH | Q9LNF2 from UniProtKB/Swiss-Prot  Length:176

    Alignment length:147
                                    39        49        59        69        79        89        99       109       119       129       139       149       159       169       
          PMEI1_ARATH    30 EMSTICDKTLNPSFCLKFLNTKFASPNLQALAKTTLDSTQARATQTLKKLQSIIDGGVDPRSKLAYRSCVDEYESAIGNLEEAFEHLASGDGMGMNMKVSAALDGADTCLDDVKRLRSVDSSVVNNSKTIKNLCGIALVISNMLPRN 176
               SCOP domains d1x90a_ A: Pectin methylesterase inhibitor 1, PMEI1                                                                                                 SCOP domains
               CATH domains 1x90A00 A:3-149 Invertase/pectin methylesterase inhibitor family protein                                                                            CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1x90 A   3 EMSTICDKTLNPSFCLKFLNTKFASANLQALAKTTLDSTQARATQTLKKLQSIIDGGVDPRSKLAYRSCVDEYESAIGNLEEAFEHLASGDGMGMNMKVSAALDGADTCLDDVKRLRSVDSSVVNNSKTIKNLCGIALVISNMLPRN 149
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       

Chain B from PDB  Type:PROTEIN  Length:147
 aligned with PMEI1_ARATH | Q9LNF2 from UniProtKB/Swiss-Prot  Length:176

    Alignment length:147
                                    39        49        59        69        79        89        99       109       119       129       139       149       159       169       
          PMEI1_ARATH    30 EMSTICDKTLNPSFCLKFLNTKFASPNLQALAKTTLDSTQARATQTLKKLQSIIDGGVDPRSKLAYRSCVDEYESAIGNLEEAFEHLASGDGMGMNMKVSAALDGADTCLDDVKRLRSVDSSVVNNSKTIKNLCGIALVISNMLPRN 176
               SCOP domains d1x90b_ B: Pectin methylesterase inhibitor 1, PMEI1                                                                                                 SCOP domains
               CATH domains 1x90B00 B:3-149 Invertase/pectin methylesterase inhibitor family protein                                                                            CATH domains
           Pfam domains (1) PMEI-1x90B01 B:3-142                                                                                                                        ------- Pfam domains (1)
           Pfam domains (2) PMEI-1x90B02 B:3-142                                                                                                                        ------- Pfam domains (2)
         Sec.struct. author .hhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhh.....hhhhhhhhhhhhhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1x90 B   3 EMSTICDKTLNPSFCLKFLNTKFASANLQALAKTTLDSTQARATQTLKKLQSIIDGGVDPRSKLAYRSCVDEYESAIGNLEEAFEHLASGDGMGMNMKVSAALDGADTCLDDVKRLRSVDSSVVNNSKTIKNLCGIALVISNMLPRN 149
                                    12        22        32        42        52        62        72        82        92       102       112       122       132       142       

   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  (1, 2)

Asymmetric Unit

(-) CATH Domains  (1, 2)

Asymmetric Unit

(-) Pfam Domains  (1, 2)

Asymmetric Unit

(-) Gene Ontology  (6, 6)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (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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 Related Entries

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

UniProtKB/Swiss-Prot
        PMEI1_ARATH | Q9LNF21x8z 1x91

(-) Related Entries Specified in the PDB File

1x8z WILD-TYPE PECTIN METHYLESTERASE INHIBITOR STRUCTURE
1x91 PECTIN METHYLESTERASE INHIBITOR MUTANT FORM A STRUCTURE