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(-) Description

Title :  2-DEHYDRO-3-DEOXY-GALACTARATE ALDOLASE FROM ESCHERICHIA COLI
 
Authors :  T. Izard, N. C. Blackwell
Date :  03 Jan 00  (Deposition) - 25 Aug 00  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.80
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A,B  (3x)
Keywords :  Class Ii Aldolase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  T. Izard, N. C. Blackwell
Crystal Structures Of The Metal-Dependent 2-Dehydro-3-Deoxy-Galactarate Aldolase Suggest A Novel Reaction Mechanism.
Embo J. V. 19 3849 2000
PubMed-ID: 10921867  |  Reference-DOI: 10.1093/EMBOJ/19.15.3849

(-) Compounds

Molecule 1 - 2-DEHYDRO-3-DEOXY-GALACTARATE ALDOLASE
    ChainsA, B
    EC Number4.1.2.20
    Organism ScientificESCHERICHIA COLI
    Organism Taxid562

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit AB
Biological Unit 1 (3x)AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 6)

Asymmetric Unit (2, 6)
No.NameCountTypeFull Name
1MG2Ligand/IonMAGNESIUM ION
2PO44Ligand/IonPHOSPHATE ION
Biological Unit 1 (1, 12)
No.NameCountTypeFull Name
1MG-1Ligand/IonMAGNESIUM ION
2PO412Ligand/IonPHOSPHATE ION

(-) Sites  (6, 6)

Asymmetric Unit (6, 6)
No.NameEvidenceResiduesDescription
1AC1SOFTWARETRP A:24 , ARG A:75 , GLN A:151 , GLU A:153 , PHE A:174 , GLY A:176 , PRO A:177 , LEU A:216 , PO4 A:302 , MG A:901 , HOH A:2192 , HOH A:2240 , HOH A:2326BINDING SITE FOR RESIDUE PO4 A 301
2AC2SOFTWARESER A:124 , VAL A:125 , LEU A:216 , PO4 A:301 , HOH A:2078 , HOH A:2240 , HOH A:2327 , HOH A:2328 , HOH A:2329BINDING SITE FOR RESIDUE PO4 A 302
3AC3SOFTWAREGLU A:153 , ASP A:179 , PO4 A:301 , HOH A:2081 , HOH A:2192 , HOH A:2326BINDING SITE FOR RESIDUE MG A 901
4AC4SOFTWARETRP B:24 , ARG B:75 , GLN B:151 , GLU B:153 , PHE B:174 , GLY B:176 , PRO B:177 , LEU B:216 , PO4 B:302 , MG B:901 , HOH B:2186 , HOH B:2228 , HOH B:2322BINDING SITE FOR RESIDUE PO4 B 301
5AC5SOFTWARESER B:124 , VAL B:125 , LEU B:216 , PO4 B:301 , HOH B:2084 , HOH B:2228 , HOH B:2323 , HOH B:2324 , HOH B:2325BINDING SITE FOR RESIDUE PO4 B 302
6AC6SOFTWAREGLU B:153 , ASP B:179 , PO4 B:301 , HOH B:2086 , HOH B:2186 , HOH B:2322BINDING SITE FOR RESIDUE MG B 901

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1DXE)

(-) Cis Peptide Bonds  (4, 4)

Asymmetric Unit
No.Residues
1Phe A:6 -Pro A:7
2Pro A:116 -Pro A:117
3Phe B:6 -Pro B:7
4Pro B:116 -Pro B:117

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

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

(-) Exons   (0, 0)

(no "Exon" information available for 1DXE)

(-) 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:253
 aligned with GARL_ECOLI | P23522 from UniProtKB/Swiss-Prot  Length:256

    Alignment length:253
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253   
           GARL_ECOLI     4 DVFPNKFKAALAAKQVQIGCWSALSNPISTEVLGLAGFDWLVLDGEHAPNDISTFIPQLMALKGSASAPVVRVPTNEPVIIKRLLDIGFYNFLIPFVETKEEAELAVASTRYPPEGIRGVSVSHRANMFGTVADYFAQSNKNITILVQIESQQGVDNVDAIAATEGVDGIFVGPSDLAAALGHLGNASHPDVQKAIQHIFNRASAHGKPSGILAPVEADARRYLEWGATFVAVGSDLGVFRSATQKLADTFKK 256
               SCOP domains d1dxea_ A: 2-dehydro-3-deoxy-galactarate aldolase                                                                                                                                                                                                             SCOP domains
               CATH domains 1dxeA00 A:4-256 Phosphoenolpyruvate-binding domains                                                                                                                                                                                                           CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhhhh...eeeeee...hhhhhhhhh.....eeeee......hhhhhhhhhhhh.....eeeee....hhhhhhhhhhh...eeee....hhhhhhhhhhh..............hhhhh.....hhhhhhh...eeeeee.hhhhhhhhhhhhh.....eeeehhhhhhhhh.......hhhhhhhhhhhhhhhhhh..eeeee..hhhhhhhhhhh...eee...hhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1dxe A   4 DVFPNKFKAALAAKQVQIGCWSALSNPISTEVLGLAGFDWLVLDGEHAPNDISTFIPQLMALKGSASAPVVRVPTNEPVIIKRLLDIGFYNFLIPFVETKEEAELAVASTRYPPEGIRGVSVSHRANMFGTVADYFAQSNKNITILVQIESQQGVDNVDAIAATEGVDGIFVGPSDLAAALGHLGNASHPDVQKAIQHIFNRASAHGKPSGILAPVEADARRYLEWGATFVAVGSDLGVFRSATQKLADTFKK 256
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253   

Chain B from PDB  Type:PROTEIN  Length:253
 aligned with GARL_ECOLI | P23522 from UniProtKB/Swiss-Prot  Length:256

    Alignment length:253
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253   
           GARL_ECOLI     4 DVFPNKFKAALAAKQVQIGCWSALSNPISTEVLGLAGFDWLVLDGEHAPNDISTFIPQLMALKGSASAPVVRVPTNEPVIIKRLLDIGFYNFLIPFVETKEEAELAVASTRYPPEGIRGVSVSHRANMFGTVADYFAQSNKNITILVQIESQQGVDNVDAIAATEGVDGIFVGPSDLAAALGHLGNASHPDVQKAIQHIFNRASAHGKPSGILAPVEADARRYLEWGATFVAVGSDLGVFRSATQKLADTFKK 256
               SCOP domains d1dxeb_ B: 2-dehydro-3-deoxy-galactarate aldolase                                                                                                                                                                                                             SCOP domains
               CATH domains 1dxeB00 B:4-256 Phosphoenolpyruvate-binding domains                                                                                                                                                                                                           CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....hhhhhhhhh...eeeeee...hhhhhhhhh.....eeeee......hhhhhhhhhhhh.....eeeee....hhhhhhhhhhhh..eeee....hhhhhhhhhhh..............hhhhh.....hhhhhhh...eeeeee.hhhhhhhhhhhhh.....eeeehhhhhhhhh.......hhhhhhhhhhhhhhhhhh..eeeee..hhhhhhhhhhhh..eee...hhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1dxe B   4 DVFPNKFKAALAAKQVQIGCWSALSNPISTEVLGLAGFDWLVLDGEHAPNDISTFIPQLMALKGSASAPVVRVPTNEPVIIKRLLDIGFYNFLIPFVETKEEAELAVASTRYPPEGIRGVSVSHRANMFGTVADYFAQSNKNITILVQIESQQGVDNVDAIAATEGVDGIFVGPSDLAAALGHLGNASHPDVQKAIQHIFNRASAHGKPSGILAPVEADARRYLEWGATFVAVGSDLGVFRSATQKLADTFKK 256
                                    13        23        33        43        53        63        73        83        93       103       113       123       133       143       153       163       173       183       193       203       213       223       233       243       253   

   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: Alpha Beta (26913)

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (10, 10)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (GARL_ECOLI | P23522)
molecular function
    GO:0008672    2-dehydro-3-deoxyglucarate aldolase activity    Catalysis of the reaction: 2-dehydro-3-deoxy-D-glucarate = pyruvate + tartronate semialdehyde.
    GO:0016830    carbon-carbon lyase activity    Catalysis of the cleavage of C-C bonds by other means than by hydrolysis or oxidation, or conversely adding a group to a double bond.
    GO:0003824    catalytic activity    Catalysis of a biochemical reaction at physiological temperatures. In biologically catalyzed reactions, the reactants are known as substrates, and the catalysts are naturally occurring macromolecular substances known as enzymes. Enzymes possess specific binding sites for substrates, and are usually composed wholly or largely of protein, but RNA that has catalytic activity (ribozyme) is often also regarded as enzymatic.
    GO:0016829    lyase activity    Catalysis of the cleavage of C-C, C-O, C-N and other bonds by other means than by hydrolysis or oxidation, or conversely adding a group to a double bond. They differ from other enzymes in that two substrates are involved in one reaction direction, but only one in the other direction. When acting on the single substrate, a molecule is eliminated and this generates either a new double bond or a new ring.
    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:0042838    D-glucarate catabolic process    The chemical reactions and pathways resulting in the breakdown of D-glucarate, the D-enantiomer of glucarate.
    GO:0046392    galactarate catabolic process    The chemical reactions and pathways resulting in the breakdown of galactarate, the anion of galactaric acid.
    GO:0019394    glucarate catabolic process    The chemical reactions and pathways resulting in the breakdown of glucarate, the anion of glucaric acid.
cellular component
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.

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 Related Entries

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

UniProtKB/Swiss-Prot
        GARL_ECOLI | P235221dxf

(-) Related Entries Specified in the PDB File

1dxf 2-DEHYDRO-3-DEOXY-GALACTARATE ALDOLASE FROM ESCHERICHIA COLI IN COMPLEX WITH PYRUVATE