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(-) Description

Title :  CRYSTAL STRUCTURE OF HUMAN MYO-INOSITOL OXYGENASE (MIOX)
 
Authors :  B. M. Hallberg, R. D. Busam, C. Arrowsmith, H. Berglund, R. Collins, A. Edwards, M. Ehn, S. Flodin, A. Flores, S. Graslund, M. Hammarstrom, M. Hogbom, L. Holmberg-Schiavone, I. Johansson, T. Karlberg, T. Kotenyova, P. Nilsson-Ehle, P. Nordlund, T. Nyman, D. Ogg, J. Sagemark, P. Stenmark, M. Sundstrom, J. Uppenberg, S. Van Den Berg, J. Weigelt, A. G. Thorsell, C. Persson, Structural Genomics Consortium (Sgc)
Date :  11 Sep 06  (Deposition) - 17 Oct 06  (Release) - 17 Jun 08  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.50
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Keywords :  Reductase, Inositol, Diiron, Structural Genomics, Structural Genomics Consortium, Sgc, Oxidoreductase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  A. G. Thorsell, C. Persson, N. Voevodskaya, R. D. Busam, M. Hammarstrom, S. Graslund, A. Graslund, B. M. Hallberg
Structural And Biophysical Characterization Of Human Myo-Inositol Oxygenase
J. Biol. Chem. V. 283 15209 2008
PubMed-ID: 18364358  |  Reference-DOI: 10.1074/JBC.M800348200
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - INOSITOL OXYGENASE
    ChainsA, B
    EC Number1.13.99.1
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPNIC-BSA4
    Expression System StrainBL21(DE3)
    Expression System Taxid469008
    Expression System Vector TypePLASMID
    Organism CommonHUMAN
    Organism ScientificHOMO SAPIENS
    Organism Taxid9606
    SynonymMYO-INOSITOL OXYGENASE, ALDEHYDE REDUCTASE-LIKE 6, RENAL-SPECIFIC OXIDOREDUCTASE, KIDNEY-SPECIFIC PROTEIN 32

 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  (5, 30)

Asymmetric Unit (5, 30)
No.NameCountTypeFull Name
1CYS2Mod. Amino AcidCYSTEINE
2FE4Ligand/IonFE (III) ION
3I1N2Ligand/Ion(2S,3R,4R,5S,6S)-2,3,4,5,6-PENTAHYDROXYCYCLOHEXANONE
4MSE20Mod. Amino AcidSELENOMETHIONINE
5SO42Ligand/IonSULFATE ION
Biological Unit 1 (4, 13)
No.NameCountTypeFull Name
1CYS1Mod. Amino AcidCYSTEINE
2FE-1Ligand/IonFE (III) ION
3I1N1Ligand/Ion(2S,3R,4R,5S,6S)-2,3,4,5,6-PENTAHYDROXYCYCLOHEXANONE
4MSE10Mod. Amino AcidSELENOMETHIONINE
5SO41Ligand/IonSULFATE ION
Biological Unit 2 (4, 13)
No.NameCountTypeFull Name
1CYS1Mod. Amino AcidCYSTEINE
2FE-1Ligand/IonFE (III) ION
3I1N1Ligand/Ion(2S,3R,4R,5S,6S)-2,3,4,5,6-PENTAHYDROXYCYCLOHEXANONE
4MSE10Mod. Amino AcidSELENOMETHIONINE
5SO41Ligand/IonSULFATE ION

(-) Sites  (10, 10)

Asymmetric Unit (10, 10)
No.NameEvidenceResiduesDescription
01AC1SOFTWAREHIS A:98 , HIS A:123 , ASP A:124 , ASP A:253 , HOH A:737 , HOH A:812BINDING SITE FOR RESIDUE FE A 703
02AC2SOFTWAREASP A:124 , HIS A:194 , HIS A:220 , I1N A:710 , HOH A:812BINDING SITE FOR RESIDUE FE A 704
03AC3SOFTWAREHIS B:98 , HIS B:123 , ASP B:124 , ASP B:253 , HOH B:782 , HOH B:807BINDING SITE FOR RESIDUE FE B 705
04AC4SOFTWAREASP B:124 , HIS B:194 , HIS B:220 , I1N B:709 , HOH B:807BINDING SITE FOR RESIDUE FE B 706
05AC5SOFTWAREARG A:229 , ARG A:247 , HOH A:929 , HOH A:962BINDING SITE FOR RESIDUE SO4 A 701
06AC6SOFTWAREARG B:229 , HOH B:845 , HOH B:889 , HOH B:945 , HOH B:971BINDING SITE FOR RESIDUE SO4 B 702
07AC7SOFTWAREASP A:85 , SER A:87 , ASP A:124 , LYS A:127 , VAL A:140 , GLY A:141 , ASP A:142 , HIS A:194 , HIS A:220 , SER A:221 , TYR A:223 , FE A:704 , HOH A:737 , HOH A:755 , HOH A:812BINDING SITE FOR RESIDUE I1N A 710
08AC8SOFTWAREASP B:85 , SER B:87 , ASP B:124 , LYS B:127 , VAL B:140 , GLY B:141 , ASP B:142 , HIS B:194 , HIS B:220 , SER B:221 , FE B:706 , HOH B:782 , HOH B:807 , HOH B:972BINDING SITE FOR RESIDUE I1N B 709
09AC9SOFTWAREASP B:112 , LYS B:113 , TRP B:225 , ARG B:229 , GLN B:232 , CYS B:235 , SER B:236 , HOH B:744 , HOH B:929BINDING SITE FOR RESIDUE CYS B 707
10BC1SOFTWAREASP A:112 , LYS A:113 , TRP A:225 , ARG A:229 , GLN A:232 , CYS A:235 , SER A:236 , HOH A:715 , HOH A:927BINDING SITE FOR RESIDUE CYS A 708

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

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

(-) Exons   (8, 16)

Asymmetric Unit (8, 16)
 ENSEMBLUniProtKBPDB
No.Transcript IDExonExon IDGenome LocationLengthIDLocationLengthCountLocationLength
1.1bENST000002160751bENSE00001944909chr22:50925253-5092534189MIOX_HUMAN1-550--
1.2ENST000002160752ENSE00000878900chr22:50925814-5092589481MIOX_HUMAN6-32270--
1.3ENST000002160753ENSE00000657697chr22:50926091-5092617181MIOX_HUMAN33-59272A:36-59 (gaps)
B:36-59 (gaps)
27
27
1.4ENST000002160754ENSE00000657699chr22:50926315-50926477163MIOX_HUMAN60-114552A:60-114 (gaps)
B:60-114 (gaps)
55
55
1.5bENST000002160755bENSE00000657701chr22:50926704-5092677168MIOX_HUMAN114-136232A:114-136
B:114-136
23
23
1.6aENST000002160756aENSE00001774113chr22:50927469-50927578110MIOX_HUMAN137-173372A:137-173
B:137-173
37
37
1.7ENST000002160757ENSE00001736525chr22:50927657-5092772468MIOX_HUMAN173-196242A:173-196
B:173-196
24
24
1.8ENST000002160758ENSE00000657708chr22:50927826-5092787550MIOX_HUMAN196-212172A:196-212
B:196-212
17
17
1.9bENST000002160759bENSE00000657711chr22:50927961-50928073113MIOX_HUMAN213-250382A:213-250
B:213-250
38
38
1.10cENST0000021607510cENSE00001690311chr22:50928177-50928483307MIOX_HUMAN250-285362A:250-285 (gaps)
B:250-285 (gaps)
36
36

(-) 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:241
 aligned with MIOX_HUMAN | Q9UGB7 from UniProtKB/Swiss-Prot  Length:285

    Alignment length:253
                                    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   
           MIOX_HUMAN    33 SGPLLDRVFTTYKLMHTHQTVDFVRSKHAQFGGFSYKKMTVMEAVDLLDGLVDESDPDVDFPNSFHAFQTAEGIRKAHPDKDWFHLVGLLHDLGKVLALFGEPQWAVVGDTFPVGCRPQASVVFCDSTFQDNPDLQDPRYSTELGMYQPHCGLDRVLMSWGHDEYMYQVMKFNKFSLPPEAFYMIRFHSFYPWHTGRDYQQLCSQQDLAMLPWVREFNKFDLYTKCPDLPDVDKLRPYYQGLIDKYCPGILSW 285
               SCOP domains -   d2ibna1 A:37-285 Myo-inositol oxygenase MioX                                                                                                                                                                                                              SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .---hhhhhhhhhhhhhhhhhhhhhhhhhhhh....eeehhhhhhhhhhhh.....---..hhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhh..hhhhh................hhhhhh..hhhhhh..............hhhhh....hhhhhhhhhhhhhh...hhhhhhhhhhh.hhhhhh........hhhhhhhhhhhhhhhhhhh------..hhhhhhhhhhhhhhhhh...eee Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.3 UniProt: 33-59    Exon 1.4  PDB: A:60-114 (gaps) UniProt: 60-114         ----------------------Exon 1.6a  PDB: A:137-173            ----------------------Exon 1.8         -------------------------------------Exon 1.10c  PDB: A:250-285 (gaps)    Transcript 1 (1)
           Transcript 1 (2) ---------------------------------------------------------------------------------Exon 1.5b              ------------------------------------Exon 1.7  PDB: A:173-196----------------Exon 1.9b  PDB: A:213-250             ----------------------------------- Transcript 1 (2)
                 2ibn A  36 S---mDRVFTTYKLmHTHQTVDFVRSKHAQFGGFSYKKmTVmEAVDLLDGLVDESD---DFPNSFHAFQTAEGIRKAHPDKDWFHLVGLLHDLGKVLALFGEPQWAVVGDTFPVGCRPQASVVFCDSTFQDNPDLQDPRYSTELGmYQPHCGLDRVLmSWGHDEYmYQVmKFNKFSLPPEAFYmIRFHSFYPWHTGRDYQQLCSQQDLAmLPWVREFNKFDL------LPDVDKLRPYYQGLIDKYCPGILSW 285
                            |   |   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   
                            |   |        47-MSE                  71-MSE           88  92                                                                                   178-MSE     190-MSE 198-MSE           216-MSE                   242-MSE     254    261                        
                           36   |                                   74-MSE                                                                                                                         202-MSE                                                                               
                               37-MSE                                                                                                                                                                                                                                                    

Chain B from PDB  Type:PROTEIN  Length:235
 aligned with MIOX_HUMAN | Q9UGB7 from UniProtKB/Swiss-Prot  Length:285

    Alignment length:253
                                    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   
           MIOX_HUMAN    33 SGPLLDRVFTTYKLMHTHQTVDFVRSKHAQFGGFSYKKMTVMEAVDLLDGLVDESDPDVDFPNSFHAFQTAEGIRKAHPDKDWFHLVGLLHDLGKVLALFGEPQWAVVGDTFPVGCRPQASVVFCDSTFQDNPDLQDPRYSTELGMYQPHCGLDRVLMSWGHDEYMYQVMKFNKFSLPPEAFYMIRFHSFYPWHTGRDYQQLCSQQDLAMLPWVREFNKFDLYTKCPDLPDVDKLRPYYQGLIDKYCPGILSW 285
               SCOP domains d   2ibnb_ B: Myo-inositol oxygenase MioX                                                                                                                                                                                                                     SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .---hhhhhhhhhhhhhhhhhhhhhhhhhhhh....eeehhhhhhhhhhhh....------hhhhhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhh..hhhhh................hhhhhh..hhhhh...............hhhhh....hhhhhhhhhhhhh....hhhhhhhhhhh.hhhhhh........hhhhhhhhhhhhhhhhhh.---------...hhhhhhhhhhhhh...eee Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
           Transcript 1 (1) Exon 1.3 UniProt: 33-59    Exon 1.4  PDB: B:60-114 (gaps) UniProt: 60-114         ----------------------Exon 1.6a  PDB: B:137-173            ----------------------Exon 1.8         -------------------------------------Exon 1.10c  PDB: B:250-285 (gaps)    Transcript 1 (1)
           Transcript 1 (2) ---------------------------------------------------------------------------------Exon 1.5b              ------------------------------------Exon 1.7  PDB: B:173-196----------------Exon 1.9b  PDB: B:213-250             ----------------------------------- Transcript 1 (2)
                 2ibn B  36 S---mDRVFTTYKLmHTHQTVDFVRSKHAQFGGFSYKKmTVmEAVDLLDGLVDES------PNSFHAFQTAEGIRKAHPDKDWFHLVGLLHDLGKVLALFGEPQWAVVGDTFPVGCRPQASVVFCDSTFQDNPDLQDPRYSTELGmYQPHCGLDRVLmSWGHDEYmYQVmKFNKFSLPPEAFYmIRFHSFYPWHTGRDYQQLCSQQDLAmLPWVREFNKFDL---------VDKLRPYYQGLIDKYCPGILSW 285
                            |   |   42    |   52        62        72 |      82    |    - |     102       112       122       132       142       152       162       172     | 182       192     | 202       212   |   222       232       242       252 |       - |     272       282   
                           36   |        47-MSE                  71-MSE          87     94                                                                                 178-MSE     190-MSE 198-MSE           216-MSE                   242-MSE     254       264                     
                               37-MSE                               74-MSE                                                                                                                         202-MSE                                                                               

   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  (0, 0)

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

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (13, 13)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (MIOX_HUMAN | Q9UGB7)
molecular function
    GO:0004033    aldo-keto reductase (NADP) activity    Catalysis of the reaction: an alcohol + NADP+ = an aldehyde or a ketone + NADPH + H+.
    GO:0008199    ferric iron binding    Interacting selectively and non-covalently with ferric iron, Fe(III).
    GO:0050113    inositol oxygenase activity    Catalysis of the reaction: myo-inositol + O(2) = D-glucuronate + H(2)O + H(+).
    GO:0005506    iron ion binding    Interacting selectively and non-covalently with iron (Fe) ions.
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0016491    oxidoreductase activity    Catalysis of an oxidation-reduction (redox) reaction, a reversible chemical reaction in which the oxidation state of an atom or atoms within a molecule is altered. One substrate acts as a hydrogen or electron donor and becomes oxidized, while the other acts as hydrogen or electron acceptor and becomes reduced.
    GO:0016651    oxidoreductase activity, acting on NAD(P)H    Catalysis of an oxidation-reduction (redox) reaction in which NADH or NADPH acts as a hydrogen or electron donor and reduces a hydrogen or electron acceptor.
    GO:0016701    oxidoreductase activity, acting on single donors with incorporation of molecular oxygen    Catalysis of an oxidation-reduction (redox) reaction in which hydrogen or electrons are transferred from one donor, and molecular oxygen is incorporated into a donor.
biological process
    GO:0019310    inositol catabolic process    The chemical reactions and pathways resulting in the breakdown of inositol, 1,2,3,4,5,6-cyclohexanehexol, a growth factor for animals and microorganisms.
    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.
cellular component
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0070062    extracellular exosome    A vesicle that is released into the extracellular region by fusion of the limiting endosomal membrane of a multivesicular body with the plasma membrane. Extracellular exosomes, also simply called exosomes, have a diameter of about 40-100 nm.
    GO:0016234    inclusion body    A discrete intracellular part formed of aggregated molecules such as proteins or other biopolymers.

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