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(-) Description

Title :  CRYSTAL STRUCTURE OF ESCHERICHIA COLI ENTEROBACTIN-SPECIFIC ISOCHORISMATE SYNTHASE ENTC IN COMPLEX WITH ISOCHORISMATE
 
Authors :  S. Sridharan, T. L. Blundell
Date :  18 Jun 09  (Deposition) - 16 Feb 10  (Release) - 14 Sep 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.30
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Keywords :  Isochorismate Synthase, Entc, Chorismate-Utilizing Enzymes, Siderophore, Enterobactin, Enterobactin Biosynthesis, Ion Transport, Iron, Iron Transport, Isomerase, Transport (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  S. Sridharan, N. Howard, O. Kerbarh, M. Blaszczyk, C. Abell, T. L. Blundell
Crystal Structure Of Escherichia Coli Enterobactin-Specific Isochorismate Synthase (Entc) Bound To Its Reaction Product Isochorismate: Implications For The Enzyme Mechanism And Differential Activity Of Chorismate-Utilizing Enzymes
J. Mol. Biol. V. 397 290 2010
PubMed-ID: 20079748  |  Reference-DOI: 10.1016/J.JMB.2010.01.019

(-) Compounds

Molecule 1 - ISOCHORISMATE SYNTHASE ENTC
    Chains: A, B
    EC Number: 5.4.4.2
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Taxid: 562
    Expression System Vector Type: PET28A
    Gene: B0593, ENTC, JW0585
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 83333
    Synonym: ISOCHORISMATE MUTASE

 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  (2, 6)

Asymmetric Unit (2, 6)
No.NameCountTypeFull Name
1ISC2Ligand/Ion(5S,6S)-5-[(1-CARBOXYETHENYL)OXY]-6-HYDROXYCYCLOHEXA-1,3-DIENE-1-CARBOXYLIC ACID
2MG4Ligand/IonMAGNESIUM ION
Biological Unit 1 (1, 1)
No.NameCountTypeFull Name
1ISC1Ligand/Ion(5S,6S)-5-[(1-CARBOXYETHENYL)OXY]-6-HYDROXYCYCLOHEXA-1,3-DIENE-1-CARBOXYLIC ACID
2MG-1Ligand/IonMAGNESIUM ION
Biological Unit 2 (1, 1)
No.NameCountTypeFull Name
1ISC1Ligand/Ion(5S,6S)-5-[(1-CARBOXYETHENYL)OXY]-6-HYDROXYCYCLOHEXA-1,3-DIENE-1-CARBOXYLIC ACID
2MG-1Ligand/IonMAGNESIUM ION

(-) Sites  (6, 6)

Asymmetric Unit (6, 6)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREGLU A:241 , GLU A:376 , HOH A:394 , HOH A:474 , ISC A:1900BINDING SITE FOR RESIDUE MG A 1702
2AC2SOFTWARETHR A:140 , THR A:142 , VAL A:145 , ASP A:146BINDING SITE FOR RESIDUE MG A 1703
3AC3SOFTWAREGLU A:197 , LEU A:212 , GLY A:214 , SER A:215 , GLU A:241 , ALA A:303 , LEU A:304 , ARG A:347 , ALA A:360 , GLY A:361 , GLY A:363 , GLU A:376 , LYS A:380 , HOH A:425 , HOH A:426 , MG A:1702BINDING SITE FOR RESIDUE ISC A 1900
4AC4SOFTWAREGLU B:241 , GLU B:376 , HOH B:498 , HOH B:564 , ISC B:1800BINDING SITE FOR RESIDUE MG B 1701
5AC5SOFTWARETHR B:140 , THR B:142 , VAL B:145 , ASP B:146 , HOH B:520 , HOH B:563BINDING SITE FOR RESIDUE MG B 1704
6AC6SOFTWAREGLU B:197 , ALA B:213 , GLY B:214 , SER B:215 , GLU B:241 , HIS B:276 , ALA B:303 , ILE B:346 , ARG B:347 , ALA B:360 , GLY B:361 , ALA B:362 , GLY B:363 , GLU B:376 , LYS B:380 , HOH B:461 , HOH B:488 , MG B:1701BINDING SITE FOR RESIDUE ISC B 1800

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3HWO)

(-) Cis Peptide Bonds  (7, 7)

Asymmetric Unit
No.Residues
1Ile A:123 -Pro A:124
2His A:299 -Pro A:300
3Phe A:307 -Pro A:308
4Ala A:362 -Gly A:363
5Ile B:123 -Pro B:124
6His B:299 -Pro B:300
7Phe B:307 -Pro B:308

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3HWO)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3HWO)

(-) Exons   (0, 0)

(no "Exon" information available for 3HWO)

(-) 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:379
 aligned with ENTC_ECOLI | P0AEJ2 from UniProtKB/Swiss-Prot  Length:391

    Alignment length:379
                                    22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302       312       322       332       342       352       362       372       382         
           ENTC_ECOLI    13 MATLAPNRFFFMSPYRSFTTSGCFARFDEPAVNGDSPDSPFQQKLAALFADAKAQGIKNPVMVGAIPFDPRQPSSLYIPESWQSFSRQEKQASARRFTRSQSLNVVERQAIPEQTTFEQMVARAAALTATPQVDKVVLSRLIDITTDAAIDSGVLLERLIAQNPVSYNFHVPLADGGVLLGASPELLLRKDGERFSSIPLAGSARRQPDEVLDREAGNRLLASEKDRHEHELVTQAMKEVLRERSSELHVPSSPQLITTPTLWHLATPFEGKANSQENALTLACLLHPTPALSGFPHQAATQVIAELEPFDRELFGGIVGWCDSEGNGEWVVTIRCAKLRENQVRLFAGAGIVPASSPLGEWRETGVKLSTMLNVFGLH 391
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .........eee.....eeee...eee...........hhhhhhhhhhhhhhhhh.....eeeeee........eeee..eeee.hhhhhhhhhhhh.......eeeeeee.hhhhhhhhhhhhhhhhhh....eeeeeeeeeeee....hhhhhhhhhhhhh...eeeeee.....eeeeee..eeeeee..eeeee.eeeeee.........hhhhhhhhhhhhhhhhhhhhhhhhhhhh..eeeee.....eeee...eeeee..eeeee....hhhhhhhhhh......eehhhhhhhhhhhhh.........eeeeee....eeeee...eeeee..eeeeeeeeee....hhhhhhhhhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3hwo A  13 MATLAPNRFFFMSPYRSFTTSGCFARFDEPAVNGDSPDSPFQQKLAALFADAKAQGIKNPVMVGAIPFDPRQPSSLYIPESWQSFSRQEKQASARRFTRSQSLNVVERQAIPEQTTFEQMVARAAALTATPQVDKVVLSRLIDITTDAAIDSGVLLERLIAQNPVSYNFHVPLADGGVLLGASPELLLRKDGERFSSIPLAGSARRQPDEVLDREAGNRLLASEKDRHEHELVTQAMKEVLRERSSELHVPSSPQLITTPTLWHLATPFEGKANSQENALTLACLLHPTPALSGFPHQAATQVIAELEPFDRELFGGIVGWCDSEGNGEWVVTIRCAKLRENQVRLFAGAGIVPASSPLGEWRETGVKLSTMLNVFGLH 391
                                    22        32        42        52        62        72        82        92       102       112       122       132       142       152       162       172       182       192       202       212       222       232       242       252       262       272       282       292       302       312       322       332       342       352       362       372       382         


Chain B from PDB  Type:PROTEIN  Length:378
 aligned with ENTC_ECOLI | P0AEJ2 from UniProtKB/Swiss-Prot  Length:391

    Alignment length:378
                                    23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293       303       313       323       333       343       353       363       373       383        
           ENTC_ECOLI    14 ATLAPNRFFFMSPYRSFTTSGCFARFDEPAVNGDSPDSPFQQKLAALFADAKAQGIKNPVMVGAIPFDPRQPSSLYIPESWQSFSRQEKQASARRFTRSQSLNVVERQAIPEQTTFEQMVARAAALTATPQVDKVVLSRLIDITTDAAIDSGVLLERLIAQNPVSYNFHVPLADGGVLLGASPELLLRKDGERFSSIPLAGSARRQPDEVLDREAGNRLLASEKDRHEHELVTQAMKEVLRERSSELHVPSSPQLITTPTLWHLATPFEGKANSQENALTLACLLHPTPALSGFPHQAATQVIAELEPFDRELFGGIVGWCDSEGNGEWVVTIRCAKLRENQVRLFAGAGIVPASSPLGEWRETGVKLSTMLNVFGLH 391
               SCOP domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ........eee.....eeee...eee...........hhhhhhhhhhhhhhhhh.....eeeeee........eeee..eeee.hhhhhhhhhhhh.......eeeeeee.hhhhhhhhhhhhhhhhh.....eeeeeeeeeeee....hhhhhhhhhhhhh...eeeeee.....eeeeee..eeeeee..eeeee.eeeeee...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhheeee.....eeee...eeeee..eeee.....hhhhhhhhhh......eehhhhhhhhhhhhh.........eeeeee....eeeee...eeeee..eeeeeeeeee....hhhhhhhhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 3hwo B  14 ATLAPNRFFFMSPYRSFTTSGCFARFDEPAVNGDSPDSPFQQKLAALFADAKAQGIKNPVMVGAIPFDPRQPSSLYIPESWQSFSRQEKQASARRFTRSQSLNVVERQAIPEQTTFEQMVARAAALTATPQVDKVVLSRLIDITTDAAIDSGVLLERLIAQNPVSYNFHVPLADGGVLLGASPELLLRKDGERFSSIPLAGSARRQPDEVLDREAGNRLLASEKDRHEHELVTQAMKEVLRERSSELHVPSSPQLITTPTLWHLATPFEGKANSQENALTLACLLHPTPALSGFPHQAATQVIAELEPFDRELFGGIVGWCDSEGNGEWVVTIRCAKLRENQVRLFAGAGIVPASSPLGEWRETGVKLSTMLNVFGLH 391
                                    23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253       263       273       283       293       303       313       323       333       343       353       363       373       383
   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 3HWO)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3HWO)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3HWO)

(-) Gene Ontology  (6, 6)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (ENTC_ECOLI | P0AEJ2)
molecular function
    GO:0008909    isochorismate synthase activity    Catalysis of the reaction: chorismate = isochorismate.
    GO:0016853    isomerase activity    Catalysis of the geometric or structural changes within one molecule. Isomerase is the systematic name for any enzyme of EC class 5.
    GO:0000287    magnesium ion binding    Interacting selectively and non-covalently with magnesium (Mg) ions.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
biological process
    GO:0009058    biosynthetic process    The chemical reactions and pathways resulting in the formation of substances; typically the energy-requiring part of metabolism in which simpler substances are transformed into more complex ones.
    GO:0009239    enterobactin biosynthetic process    The chemical reactions and pathways resulting in the formation of enterobactin, a catechol-derived siderochrome of Enterobacteria; enterobactin (N',N',N''-(2,6,10-trioxo-1,5,9-triacyclodecane-3,7,11-triyl)tris(2,3-dihydroxy)benzamide) is a self-triester of 2,3-dihydroxy-N-benzoyl-L-serine and a product of the shikimate pathway.

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 Related Entries

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        ENTC_ECOLI | P0AEJ2: 5jxz 5jy4 5jy8 5jzd

(-) Related Entries Specified in the PDB File

3bzn