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(-) Description

Title :  STRUCTURE OF SEMET 2-HYDROXYCHROMENE-2-CARBOXYLATE ISOMERASE (HCCA ISOMERASE)
 
Authors :  L. C. Thompson, J. E. Ladner, S. G. Codreanu, J. Harp, G. L. Gilliland, R. N. Armstrong
Date :  04 Oct 06  (Deposition) - 12 Jun 07  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.60
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (2x)
Keywords :  Isomerase, Glutathione, Kgst, Kappa Gst, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  L. C. Thompson, J. E. Ladner, S. G. Codreanu, J. Harp, G. L. Gilliland, R. N. Armstrong
2-Hydroxychromene-2-Carboxylic Acid Isomerase: A Kappa Clas Glutathione Transferase From Pseudomonas Putida
Biochemistry V. 46 6710 2007
PubMed-ID: 17508726  |  Reference-DOI: 10.1021/BI700356U

(-) Compounds

Molecule 1 - 2-HYDROXYCHROMENE-2-CARBOXYLATE ISOMERASE
    Chains: A
    EC Number: 2.5.1.18
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PET20B(+)
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Gene: NAHD
    Organism Scientific: PSEUDOMONAS PUTIDA
    Organism Taxid: 303
    Synonym: HCCA ISOMERASE

 Structural Features

(-) Chains, Units

  1
Asymmetric Unit : A
Biological Unit 1 (2x): A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (6, 12)

Asymmetric Unit (6, 12)
No.NameCountTypeFull Name
12C21Ligand/Ion(2S)-2-HYDROXY-2H-CHROMENE-2-CARBOXYLIC ACID
2CXS1Ligand/Ion3-CYCLOHEXYL-1-PROPYLSULFONIC ACID
3GSH1Ligand/IonGLUTATHIONE
4MSE6Mod. Amino AcidSELENOMETHIONINE
5PO42Ligand/IonPHOSPHATE ION
6TOH1Ligand/Ion(3E)-4-(2-HYDROXYPHENYL)-2-OXOBUT-3-ENOIC ACID
Biological Unit 1 (6, 24)
No.NameCountTypeFull Name
12C22Ligand/Ion(2S)-2-HYDROXY-2H-CHROMENE-2-CARBOXYLIC ACID
2CXS2Ligand/Ion3-CYCLOHEXYL-1-PROPYLSULFONIC ACID
3GSH2Ligand/IonGLUTATHIONE
4MSE12Mod. Amino AcidSELENOMETHIONINE
5PO44Ligand/IonPHOSPHATE ION
6TOH2Ligand/Ion(3E)-4-(2-HYDROXYPHENYL)-2-OXOBUT-3-ENOIC ACID

(-) Sites  (6, 6)

Asymmetric Unit (6, 6)
No.NameEvidenceResiduesDescription
1AC1SOFTWARELEU A:39 , LYS A:43 , SER A:52 , ASN A:53 , GSH A:301 , HOH A:602BINDING SITE FOR RESIDUE PO4 A 306
2AC2SOFTWAREARG A:20 , TRP A:70 , PHE A:185 , HOH A:405 , HOH A:414 , HOH A:615BINDING SITE FOR RESIDUE PO4 A 308
3AC3SOFTWARESER A:11 , PHE A:13 , LEU A:39 , ASN A:48 , LYS A:59 , GLY A:167 , VAL A:168 , TRP A:179 , GLY A:180 , ASN A:181 , ASP A:182 , ARG A:183 , TOH A:304 , 2C2 A:305 , PO4 A:306 , HOH A:403 , HOH A:412 , HOH A:416 , HOH A:421 , HOH A:436 , HOH A:507 , HOH A:602 , HOH A:608BINDING SITE FOR RESIDUE GSH A 301
4AC4SOFTWAREPRO A:12 , PHE A:13 , LYS A:43 , SER A:52 , ARG A:54 , PHE A:80 , TYR A:84 , GSH A:301 , HOH A:602BINDING SITE FOR RESIDUE TOH A 304
5AC5SOFTWAREPHE A:13 , SER A:52 , ASN A:53 , ARG A:54 , LEU A:60 , GSH A:301BINDING SITE FOR RESIDUE 2C2 A 305
6AC6SOFTWARETYR A:95 , SER A:96 , GLY A:97 , GLN A:101 , TRP A:135 , PHE A:143 , GLU A:176 , HOH A:471 , HOH A:593BINDING SITE FOR RESIDUE CXS A 312

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 2IMD)

(-) Cis Peptide Bonds  (1, 1)

Asymmetric Unit
No.Residues
1Val A:168 -Pro A:169

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 2IMD)

(-) Exons   (0, 0)

(no "Exon" information available for 2IMD)

(-) 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:203
 aligned with NAHD_PSEPU | Q51948 from UniProtKB/Swiss-Prot  Length:203

    Alignment length:203
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200   
           NAHD_PSEPU     1 MIVDFYFDFLSPFSYLANQRLSKLAQDYGLTIRYNAIDLARVKIAIGNVGPSNRDLKVKLDYLKVDLQRWAQLYGIPLVFPANYNSRRMNIGFYYSGAEAQAAAYVNVVFNAVWGEGIAPDLESLPALVSEKLGWDRSAFEHFLSSNAATERYDEQTHAAIERKVFGVPTMFLGDEMWWGNDRLFMLESAMGRLCRQNADLSS 203
               SCOP domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeee...hhhhhhhhhhhhhhhhhhh.eeeeee.hhhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhhh..........hhhhhhhhhhh.hhhhhhhhhhhhhhhhhhh.......hhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhh......eeee..eeee...hhhhhhhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 2imd A   1 mIVDFYFDFLSPFSYLANQRLSKLAQDYGLTIRYNAIDLARVKIAIGNVGPSNRDLKVKLDYLKVDLQRWAQLYGIPLVFPANYNSRRmNIGFYYSGAEAQAAAYVNVVFNAVWGEGIAPDLESLPALVSEKLGWDRSAFEHFLSSNAATERYDEQTHAAIERKVFGVPTmFLGDEmWWGNDRLFmLESAmGRLCRQNADLSS 203
                            |       10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170|     |180     | 190|      200   
                            |                                                                                      89-MSE                                                                           171-MSE |      186-MSE|            
                            1-MSE                                                                                                                                                                         177-MSE       191-MSE
   Legend:   → Mismatch (orange background)
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  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 2IMD)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 2IMD)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 2IMD)

(-) Gene Ontology  (6, 6)

Asymmetric Unit(hide GO term definitions)
Chain A   (NAHD_PSEPU | Q51948)
molecular function
    GO:0018845    2-hydroxychromene-2-carboxylate isomerase activity    Catalysis of the reaction: 2-hydroxychromene-2-carboxylate = (3E)-4-(2-hydroxyphenyl)-2-oxobut-3-enoate. (3E)-4-(2-hydroxyphenyl)-2-oxobut-3-enoate is also known as trans-o-hydroxybenzylidenepyruvate.
    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:0015035    protein disulfide oxidoreductase activity    Catalysis of the reaction: a protein with reduced sulfide groups = a protein with oxidized disulfide bonds.
biological process
    GO:0019439    aromatic compound catabolic process    The chemical reactions and pathways resulting in the breakdown of aromatic compounds, any substance containing an aromatic carbon ring.
    GO:1901170    naphthalene catabolic process    The chemical reactions and pathways resulting in the breakdown of naphthalene.
    GO:0055114    oxidation-reduction process    A metabolic process that results in the removal or addition of one or more electrons to or from a substance, with or without the concomitant removal or addition of a proton or protons.

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 Related Entries

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

UniProtKB/Swiss-Prot
        NAHD_PSEPU | Q51948: 2ime 2imf

(-) Related Entries Specified in the PDB File

1r4w 2ime 2imf