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(-) Description

Title :  CRYSTAL STRUCTURE OF PECTIN METHYLESTERASE D178A MUTANT IN COMPLEX WITH HEXASACCHARIDE IV
 
Authors :  M. Fries, K. Brocklehurst, V. E. Shevchik, R. W. Pickersgill
Date :  07 Nov 06  (Deposition) - 18 Sep 07  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.90
Chains :  Asym. Unit :  A,B,C#,D#
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
#:   chains that contain no standard or modified protein/DNA/RNA residue)
 
Keywords :  Michaelis Complex, Hydrolase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  M. Fries, J. Ihrig, K. Brocklehurst, V. E. Shevchik, R. W. Pickersgill
Molecular Basis Of The Activity Of The Phytopathogen Pectin Methylesterase.
Embo J. V. 26 3879 2007
PubMed-ID: 17717531  |  Reference-DOI: 10.1038/SJ.EMBOJ.7601816

(-) Compounds

Molecule 1 - PECTINESTERASE A
    ChainsA, B
    EC Number3.1.1.11
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPBCKS/PEMA
    Expression System StrainNM522
    Expression System Taxid562
    Expression System VectorPBCKS
    Expression System Vector TypePLASMID
    GenePEMA, PEM
    MutationYES
    Organism ScientificERWINIA CHRYSANTHEMI
    Organism Taxid198628
    Strain3937
    SynonymPECTIN METHYLESTERASE A, PE A

 Structural Features

(-) Chains, Units

  1234
Asymmetric Unit ABC#D#
Biological Unit 1 (1x)A   
Biological Unit 2 (1x) B  
#:   chains that contain no standard or modified protein/DNA/RNA residue)
 

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 12)

Asymmetric Unit (2, 12)
No.NameCountTypeFull Name
1ADA4Ligand/IonALPHA-D-GALACTOPYRANURONIC ACID
2M8C8Ligand/IonMETHYL ALPHA-D-GALACTOPYRANURONATE
Biological Unit 1 (0, 0)
No.NameCountTypeFull Name
1ADA-1Ligand/IonALPHA-D-GALACTOPYRANURONIC ACID
2M8C-1Ligand/IonMETHYL ALPHA-D-GALACTOPYRANURONATE
Biological Unit 2 (0, 0)
No.NameCountTypeFull Name
1ADA-1Ligand/IonALPHA-D-GALACTOPYRANURONIC ACID
2M8C-1Ligand/IonMETHYL ALPHA-D-GALACTOPYRANURONATE

(-) Sites  (12, 12)

Asymmetric Unit (12, 12)
No.NameEvidenceResiduesDescription
01AC1SOFTWARELYS A:223 , ASN A:226 , M8C C:2 , HOH C:262 , HOH C:634 , HOH C:700BINDING SITE FOR RESIDUE ADA C 1
02AC2SOFTWAREADA C:1 , M8C C:3 , HOH C:74 , HOH C:102 , HOH C:355 , HOH C:568 , HOH C:634BINDING SITE FOR RESIDUE M8C C 2
03AC3SOFTWAREVAL A:198 , ARG A:219 , VAL A:227 , SER A:228 , TYR A:230 , M8C C:2 , M8C C:4 , HOH C:214 , HOH C:320 , HOH C:568BINDING SITE FOR RESIDUE M8C C 3
04AC4SOFTWAREGLN A:177 , ARG A:267 , SER A:307 , M8C C:3 , M8C C:5 , HOH C:21 , HOH C:72 , HOH C:339 , HOH C:619BINDING SITE FOR RESIDUE M8C C 4
05AC5SOFTWAREGLN A:153 , GLN A:177 , ASP A:199 , PHE A:202 , MET A:306 , HOH A:492 , M8C C:4 , ADA C:6 , HOH C:359BINDING SITE FOR RESIDUE M8C C 5
06AC6SOFTWARETHR A:109 , GLN A:153 , TRP A:269 , PRO A:271 , THR A:272 , HOH A:396 , M8C C:5 , HOH C:150 , HOH C:259 , HOH C:431 , HOH C:738BINDING SITE FOR RESIDUE ADA C 6
07AC7SOFTWARELYS B:223 , ASN B:226 , M8C D:2 , HOH D:515 , HOH D:722 , HOH D:797 , HOH D:814BINDING SITE FOR RESIDUE ADA D 1
08AC8SOFTWAREHOH B:396 , HOH B:521 , ADA D:1 , M8C D:3 , HOH D:398BINDING SITE FOR RESIDUE M8C D 2
09AC9SOFTWAREARG B:219 , VAL B:227 , SER B:228 , TYR B:230 , M8C D:2 , M8C D:4 , HOH D:398 , HOH D:514 , HOH D:544BINDING SITE FOR RESIDUE M8C D 3
10BC1SOFTWAREGLN B:177 , ARG B:267 , SER B:307 , HOH B:511 , HOH B:517 , M8C D:3 , M8C D:5 , HOH D:407BINDING SITE FOR RESIDUE M8C D 4
11BC2SOFTWAREGLN B:153 , GLN B:177 , ASP B:199 , PHE B:202 , MET B:306 , HOH B:466 , M8C D:4 , ADA D:6 , HOH D:436BINDING SITE FOR RESIDUE M8C D 5
12BC3SOFTWARETHR B:109 , GLN B:153 , TRP B:269 , PRO B:271 , THR B:272 , HOH B:410 , HOH B:603 , M8C D:5 , HOH D:297 , HOH D:479 , HOH D:699BINDING SITE FOR RESIDUE ADA D 6

(-) SS Bonds  (2, 2)

Asymmetric Unit
No.Residues
1A:192 -A:212
2B:192 -B:212

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 2NT9)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 2NT9)

(-) PROSITE Motifs  (1, 2)

Asymmetric Unit (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1PECTINESTERASE_2PS00503 Pectinesterase signature 2.PMEA_DICD3194-203
 
  2A:194-203
B:194-203
Biological Unit 1 (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1PECTINESTERASE_2PS00503 Pectinesterase signature 2.PMEA_DICD3194-203
 
  1A:194-203
-
Biological Unit 2 (1, 1)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1PECTINESTERASE_2PS00503 Pectinesterase signature 2.PMEA_DICD3194-203
 
  1-
B:194-203

(-) Exons   (0, 0)

(no "Exon" information available for 2NT9)

(-) 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:342
 aligned with PMEA_DICD3 | P0C1A9 from UniProtKB/Swiss-Prot  Length:366

    Alignment length:342
                                    34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224       234       244       254       264       274       284       294       304       314       324       334       344       354       364  
           PMEA_DICD3    25 ATTYNAVVSKSSSDGKTFKTIADAIASAPAGSTPFVILIKNGVYNERLTITRNNLHLKGESRNGAVIAAATAAGTLKSDGSKWGTAGSSTITISAKDFSAQSLTIRNDFDFPANQAKSDSDSSKIKDTQAVALYVTKSGDRAYFKDVSLVGYQDTLYVSGGRSFFSDCRISGTVDFIFGDGTALFNNCDLVSRYRADVKSGNVSGYLTAPSTNINQKYGLVITNSRVIRESDSVPAKSYGLGRPWHPTTTFSDGRYADPNAIGQTVFLNTSMDNHIYGWDKMSGKDKNGNTIWFNPEDSRFFEYKSYGAGATVSKDRRQLTDAQAAEYTQSKVLGDWTPTLP 366
               SCOP domains d2nt9a_ A: automated matches                                                                                                                                                                                                                                                                                                                           SCOP domains
               CATH domains 2nt9A00 A:25-366 Single-stranded right-handed beta-helix, Pectin lyase-like                                                                                                                                                                                                                                                                            CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .....eee...........hhhhhhhh.......eeeee..eeee..eee....eeeee.....eeeee.............hhhhhh..eee.....eeeeeeeee..hhhhhhhh...............eee......eeeeeeeee.....eee...eeeee..eeee.eeeeee..eeeee..eeee............eeeeee.........eeee..eeee.........eeee.....eeee..eeee......eeeee..ee...eee...eeee.....eeeehhhhheeeee................hhhhhh..hhhhhhh....... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------PECTINESTE------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 2nt9 A  25 ATTYNAVVSKSSSDGKTFKTIADAIASAPAGSTPFVILIKNGVYNERLTITRNNLHLKGESRNGAVIAAATAAGTLKSDGSKWGTAGSSTITISAKDFSAQSLTIRNDFDFPANQAKSDSDSSKIKDTQAVALYVTKSGDRAYFKDVSLVGYQATLYVSGGRSFFSDCRISGTVDFIFGDGTALFNNCDLVSRYRADVKSGNVSGYLTAPSTNINQKYGLVITNSRVIRESDSVPAKSYGLGRPWHPTTTFSDGRYADPNAIGQTVFLNTSMDNHIYGWDKMSGKDKNGNTIWFNPEDSRFFEYKSYGAGATVSKDRRQLTDAQAAEYTQSKVLGDWTPTLP 366
                                    34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224       234       244       254       264       274       284       294       304       314       324       334       344       354       364  

Chain B from PDB  Type:PROTEIN  Length:342
 aligned with PMEA_DICD3 | P0C1A9 from UniProtKB/Swiss-Prot  Length:366

    Alignment length:342
                                    34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224       234       244       254       264       274       284       294       304       314       324       334       344       354       364  
           PMEA_DICD3    25 ATTYNAVVSKSSSDGKTFKTIADAIASAPAGSTPFVILIKNGVYNERLTITRNNLHLKGESRNGAVIAAATAAGTLKSDGSKWGTAGSSTITISAKDFSAQSLTIRNDFDFPANQAKSDSDSSKIKDTQAVALYVTKSGDRAYFKDVSLVGYQDTLYVSGGRSFFSDCRISGTVDFIFGDGTALFNNCDLVSRYRADVKSGNVSGYLTAPSTNINQKYGLVITNSRVIRESDSVPAKSYGLGRPWHPTTTFSDGRYADPNAIGQTVFLNTSMDNHIYGWDKMSGKDKNGNTIWFNPEDSRFFEYKSYGAGATVSKDRRQLTDAQAAEYTQSKVLGDWTPTLP 366
               SCOP domains d2nt9b_ B: automated matches                                                                                                                                                                                                                                                                                                                           SCOP domains
               CATH domains 2nt9B00 B:25-366 Single-stranded right-handed beta-helix, Pectin lyase-like                                                                                                                                                                                                                                                                            CATH domains
           Pfam domains (1) ----Pectinesterase-2nt9B01 B:29-360                                                                                                                                                                                                                                                                                                             ------ Pfam domains (1)
           Pfam domains (2) ----Pectinesterase-2nt9B02 B:29-360                                                                                                                                                                                                                                                                                                             ------ Pfam domains (2)
         Sec.struct. author .....eee...........hhhhhhhh.......eeeee..eeee..eee....eeeee.....eeeee.............hhhhhh..eee.....eeeeeeeee..hhhhhhh................eee......eeeeeeeee.....eee...eeeee..eeee.eeeeee..eeeee..eeee............eeeeee.........eeee..eeee.........eeee.....eeee..eeee......eeeee..ee...eee...eeee.....eeeehhhhheeeee................hhhhhh..hhhhhhh....... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------------------------------PECTINESTE------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 2nt9 B  25 ATTYNAVVSKSSSDGKTFKTIADAIASAPAGSTPFVILIKNGVYNERLTITRNNLHLKGESRNGAVIAAATAAGTLKSDGSKWGTAGSSTITISAKDFSAQSLTIRNDFDFPANQAKSDSDSSKIKDTQAVALYVTKSGDRAYFKDVSLVGYQATLYVSGGRSFFSDCRISGTVDFIFGDGTALFNNCDLVSRYRADVKSGNVSGYLTAPSTNINQKYGLVITNSRVIRESDSVPAKSYGLGRPWHPTTTFSDGRYADPNAIGQTVFLNTSMDNHIYGWDKMSGKDKNGNTIWFNPEDSRFFEYKSYGAGATVSKDRRQLTDAQAAEYTQSKVLGDWTPTLP 366
                                    34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204       214       224       234       244       254       264       274       284       294       304       314       324       334       344       354       364  

   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
(-)
Class: Mainly Beta (13760)

(-) Pfam Domains  (1, 2)

Asymmetric Unit

(-) Gene Ontology  (8, 8)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (PMEA_DICD3 | P0C1A9)
molecular function
    GO:0045330    aspartyl esterase activity    Catalysis of the hydrolysis of an ester bond by a mechanism involving a catalytically active aspartic acid residue.
    GO:0016787    hydrolase activity    Catalysis of the hydrolysis of various bonds, e.g. C-O, C-N, C-C, phosphoric anhydride bonds, etc. Hydrolase is the systematic name for any enzyme of EC class 3.
    GO:0030599    pectinesterase activity    Catalysis of the reaction: pectin + n H2O = n methanol + pectate.
biological process
    GO:0042545    cell wall modification    The series of events leading to chemical and structural alterations of an existing cell wall that can result in loosening, increased extensibility or disassembly.
    GO:0071555    cell wall organization    A process that results in the assembly, arrangement of constituent parts, or disassembly of the cell wall, the rigid or semi-rigid envelope lying outside the cell membrane of plant, fungal and most prokaryotic cells, maintaining their shape and protecting them from osmotic lysis.
    GO:0045490    pectin catabolic process    The chemical reactions and pathways resulting in the breakdown of pectin, a polymer containing a backbone of alpha-1,4-linked D-galacturonic acid residues.
cellular component
    GO:0005618    cell wall    The rigid or semi-rigid envelope lying outside the cell membrane of plant, fungal, most prokaryotic cells and some protozoan parasites, maintaining their shape and protecting them from osmotic lysis. In plants it is made of cellulose and, often, lignin; in fungi it is composed largely of polysaccharides; in bacteria it is composed of peptidoglycan; in protozoan parasites such as Giardia species, it's made of carbohydrates and proteins.
    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
        PMEA_DICD3 | P0C1A91qjv 2nsp 2nst 2nt6 2ntb 2ntp 2ntq

(-) Related Entries Specified in the PDB File

1qjv CRYSTAL STRUCTURE OF PECTIN METHYLESTERASE APO-ENZYME
2nsp CRYSTAL STRUCTURE OF PECTIN METHYLESTERASE D178A MUTANT IN COMPLEX WITH HEXASACCHARIDE I
2nst CRYSTAL STRUCTURE OF PECTIN METHYLESTERASE D178A MUTANT IN COMPLEX WITH HEXASACCHARIDE II
2nt6 CRYSTAL STRUCTURE OF PECTIN METHYLESTERASE D178A MUTANT IN COMPLEX WITH HEXASACCHARIDE III
2ntb CRYSTAL STRUCTURE OF PECTIN METHYLESTERASE IN COMPLEX WITH HEXASACCHARIDE V
2ntp CRYSTAL STRUCTURE OF PECTIN METHYLESTERASE IN COMPLEX WITH HEXASACCHARIDE VI
2ntq CRYSTAL STRUCTURE OF PECTIN METHYLESTERASE IN COMPLEX WITH HEXASACCHARIDE VII