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(-) Description

Title :  STRUCTURAL BASIS FOR NOVEL DELTA-REGIOSELECTIVE HEME OXYGENATION IN THE OPPORTUNISTIC PATHOGEN PSEUDOMONAS AERUGINOSA
 
Authors :  J. Friedman, L. Lad, H. Li, A. Wilks, T. L. Poulos
Date :  04 Mar 04  (Deposition) - 22 Jun 04  (Release) - 16 Nov 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.60
Chains :  Asym./Biol. Unit :  A
Keywords :  Heme Oxygenase, Heme Degradation, Regioselectivity, Oxidoreductase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  J. Friedman, L. Lad, H. Li, A. Wilks, T. L. Poulos
Structural Basis For Novel Delta-Regioselective Heme Oxygenation In The Opportunistic Pathogen Pseudomonas Aeruginosa
Biochemistry V. 43 5239 2004
PubMed-ID: 15122889  |  Reference-DOI: 10.1021/BI049687G

(-) Compounds

Molecule 1 - HYPOTHETICAL PROTEIN PA-HO
    Chains: A
    EC Number: 1.14.99.3
    Engineered: YES
    Expression System: ESCHERICHIA COLI BL21(DE3)
    Expression System Plasmid: PWMZ1656
    Expression System Strain: BL21(DE3)
    Expression System Taxid: 469008
    Expression System Vector Type: PLASMID
    Gene: PIGA
    Organism Scientific: PSEUDOMONAS AERUGINOSA
    Organism Taxid: 287

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

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

Asymmetric/Biological Unit (2, 2)
No.NameCountTypeFull Name
1HEM1Ligand/IonPROTOPORPHYRIN IX CONTAINING FE
2SO41Ligand/IonSULFATE ION

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREARG A:85 , VAL A:95 , HOH A:916 , HOH A:959 , HOH A:976BINDING SITE FOR RESIDUE SO4 A 910
2AC2SOFTWAREASN A:19 , HIS A:26 , LEU A:29 , GLU A:30 , PHE A:117 , GLY A:121 , SER A:122 , PHE A:128 , LYS A:132 , TRP A:158 , PHE A:186 , PHE A:189 , HOH A:981 , HOH A:1063 , HOH A:1066BINDING SITE FOR RESIDUE HEM A 300

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1SK7)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1SK7)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1SK7)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1SK7)

(-) Exons   (0, 0)

(no "Exon" information available for 1SK7)

(-) Sequences/Alignments

Asymmetric/Biological 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    
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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:187
 aligned with O69002_PSEAI | O69002 from UniProtKB/TrEMBL  Length:198

    Alignment length:187
                                    21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       
         O69002_PSEAI    12 NLRSQRLNLLTNEPHQRLESLVKSKEPFASRDNFARFVAAQYLFQHDLEPLYRNEALARLFPGLASRARDDAARADLADLGHPVPEGDQSVREADLSLAEALGWLFVSEGSKLGAAFLFKKAAALELDENFGARHLAEPEGGRAQGWKSFVAILDGIELNEEEERLAAKGASDAFNRFGDLLERTFA 198
               SCOP domains d1sk7a_ A: Heme oxygenase HemO (PigA)                                                                                                                                                       SCOP domains
               CATH domains 1sk7A00 A:12-198 Heme Oxygenase; Chain A                                                                                                                                                    CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhhhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhh...............hhhhhhhhhhhhhhh..hhhhhhhhhhhhh......hhhhh....hhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1sk7 A  12 NLRSQRLNLLTNEPHQRLESLVKSKEPFASRDNFARFVAAQYLFQHDLEPLYRNEALARLFPGLASRARDDAARADLADLGHPVPEGDQSVREADLSLAEALGWLFVSEGSKLGAAFLFKKAAALELDENFGARHLAEPEGGRAQGWKSFVAILDGIELNEEEERLAAKGASDAFNRFGDLLERTFA 198
                                    21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191
   Legend:   → Mismatch (orange background)
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  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, 1)

Asymmetric/Biological Unit
(-)
Class: All alpha proteins (14657)

(-) CATH Domains  (1, 1)

Asymmetric/Biological Unit
(-)
Class: Mainly Alpha (13335)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1SK7)

(-) Gene Ontology  (4, 4)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (O69002_PSEAI | O69002)
molecular function
    GO:0004392    heme oxygenase (decyclizing) activity    Catalysis of the reaction: heme + 3 donor-H2 + 3 O2 = biliverdin + Fe2+ + CO + 3 acceptor + 3 H2O.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
biological process
    GO:0006788    heme oxidation    The chemical reactions and pathways resulting in the loss of electrons from one or more atoms in heme.
    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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