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(-) Description

Title :  CRYSTAL STRUCTURE OF E.COLI HPRT-GMP COMPLEX
 
Authors :  L. W. Guddat, S. Vos, J. L. Martin, D. T. Keough, J. De Jersey
Date :  28 Nov 00  (Deposition) - 28 Aug 02  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.80
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A,B  (2x)
Keywords :  Crystal Structure, Phosphoribosyltransferases, Purine Salvage, Protein Chemistry, Enzymology (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  L. W. Guddat, S. Vos, J. L. Martin, D. T. Keough, J. De Jersey
Crystal Structures Of Free, Imp-, And Gmp-Bound Escherichia Coli Hypoxanthine Phosphoribosyltransferase.
Protein Sci. V. 11 1626 2002
PubMed-ID: 12070315  |  Reference-DOI: 10.1110/PS.0201002
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - HYPOXANTHINE PHOSPHORIBOSYLTRANSFERASE
    ChainsA, B
    EC Number2.4.2.8
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPT7-7
    Expression System StrainSPHI606
    Expression System Taxid562
    Expression System Vector TypePLASMID
    GeneHPT
    Organism ScientificESCHERICHIA COLI
    Organism Taxid562

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit AB
Biological Unit 1 (2x)AB

Summary Information (see also Sequences/Alignments below)

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

Asymmetric Unit (2, 2)
No.NameCountTypeFull Name
15GP1Ligand/IonGUANOSINE-5'-MONOPHOSPHATE
2N1Ligand/Ion
Biological Unit 1 (1, 2)
No.NameCountTypeFull Name
15GP2Ligand/IonGUANOSINE-5'-MONOPHOSPHATE
2N-1Ligand/Ion

(-) Sites  (1, 1)

Asymmetric Unit (1, 1)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREGLU A:103 , ILE A:105 , ASP A:107 , SER A:108 , GLY A:109 , ASN A:110 , THR A:111 , LEU A:112 , LYS A:135 , PHE A:156 , VAL A:157 , ILE A:162 , ASP A:163 , HOH A:1001 , HOH A:1011 , HOH A:1090BINDING SITE FOR RESIDUE 5GP A 190

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1G9T)

(-) Cis Peptide Bonds  (2, 2)

Asymmetric Unit
No.Residues
1Leu A:46 -Arg A:47
2Leu B:346 -Arg B:347

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1G9T)

(-) PROSITE Motifs  (1, 2)

Asymmetric Unit (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1PUR_PYR_PR_TRANSFERPS00103 Purine/pyrimidine phosphoribosyl transferases signature.HPRT_ECOLI95-107
 
  2A:99-111
B:399-411
Biological Unit 1 (1, 4)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1PUR_PYR_PR_TRANSFERPS00103 Purine/pyrimidine phosphoribosyl transferases signature.HPRT_ECOLI95-107
 
  4A:99-111
B:399-411

(-) Exons   (0, 0)

(no "Exon" information available for 1G9T)

(-) 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:167
 aligned with HPRT_ECOLI | P0A9M2 from UniProtKB/Swiss-Prot  Length:178

    Alignment length:176
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170      
           HPRT_ECOLI     1 MKHTVEVMIPEAEIKARIAELGRQITERYKDSGSDMVLVGLLRGSFMFMADLCREVQVSHEVDFMTASSYGSGMSTTRDVKILKDLDEDIRGKDVLIVEDIIDSGNTLSKVREILSLREPKSLAICTLLDKPSRREVNVPVEFIGFSIPDEFVVGYGIDYAQRYRHLPYIGKVILL 176
               SCOP domains d1g9ta_ A: Hypoxanthine PRTase                                                                                                                                                   SCOP domains
               CATH domains 1g9tA00 A:5-180  [code=3.40.50.2020, no name defined]                                                                                                                            CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....eeeeehhhhhhhhhhhhhhhhhhhhh.....eeeeee...hhhhhhhhhhhh....eeeeeee.---------....eee.........eeeeeeeee..hhhhhhhhhhhhh....eeeeeeeee.hhhh.......eeeee.....ee...............eeee... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------PUR_PYR_PR_TR--------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1g9t A   5 MKHTVEVMIPEAEIKARIAELGRQITERYKDSGSDMVLVGLLRGSFMFMADLCREVQVSHEVDFMTAS---------RDLKILKDLDEDIRGKDVLIVEDIIDSGNTLSKVREILSLREPKSLAICTLLDKPSRREVNVPVEFIGFSIPDEFVVGYGIDYAQRYRHLPYIGKVILL 180
                                    14        24        34        44        54        64       | -       |84        94       104       114       124       134       144       154       164       174      
                                                                                              72        82                                                                                                  

Chain B from PDB  Type:PROTEIN  Length:169
 aligned with HPRT_ECOLI | P0A9M2 from UniProtKB/Swiss-Prot  Length:178

    Alignment length:177
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       
           HPRT_ECOLI     1 MKHTVEVMIPEAEIKARIAELGRQITERYKDSGSDMVLVGLLRGSFMFMADLCREVQVSHEVDFMTASSYGSGMSTTRDVKILKDLDEDIRGKDVLIVEDIIDSGNTLSKVREILSLREPKSLAICTLLDKPSRREVNVPVEFIGFSIPDEFVVGYGIDYAQRYRHLPYIGKVILLD 177
               SCOP domains d1g9tb_ B: Hypoxanthine PRTase                                                                                                                                                    SCOP domains
               CATH domains 1g9tB00 B:305-481  [code=3.40.50.2020, no name defined]                                                                                                                           CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....eeeeehhhhhhhhhhhhhhhhhhhhh.....eeeeee...hhhhhhhhhhhh....eeeeeee..--------....eee.........eeeeeeeee..hhhhhhhhhhhhh....eeeeeeeee.hhhh.......eeeee.....ee...............eeee.... Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------PUR_PYR_PR_TR---------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1g9t B 305 MKHTVEVMIPEAEIKARIAELGRQITERYKDSGSDMVLVGLLRGSFMFMADLCREVQVSHEVDFMTASS--------RDLKILKDLDEDIRGKDVLIVEDIIDSGNTLSKVREILSLREPKSLAICTLLDKPSRREVNVPVEFIGFSIPDEFVVGYGIDYAQRYRHLPYIGKVILLD 481
                                   314       324       334       344       354       364        |-       384       394       404       414       424       434       444       454       464       474       
                                                                                              373      382                                                                                                   

   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 1G9T)

(-) Gene Ontology  (13, 13)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (HPRT_ECOLI | P0A9M2)
molecular function
    GO:0052657    guanine phosphoribosyltransferase activity    Catalysis of the reaction: GMP + diphosphate = guanine + 5-phospho-alpha-D-ribose 1-diphosphate.
    GO:0004422    hypoxanthine phosphoribosyltransferase activity    Catalysis of the reaction: IMP + diphosphate = hypoxanthine + 5-phospho-alpha-D-ribose 1-diphosphate.
    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.
    GO:0000166    nucleotide binding    Interacting selectively and non-covalently with a nucleotide, any compound consisting of a nucleoside that is esterified with (ortho)phosphate or an oligophosphate at any hydroxyl group on the ribose or deoxyribose.
    GO:0016740    transferase activity    Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
    GO:0016757    transferase activity, transferring glycosyl groups    Catalysis of the transfer of a glycosyl group from one compound (donor) to another (acceptor).
biological process
    GO:0032263    GMP salvage    Any process which produces guanosine monophosphate from derivatives of it, without de novo synthesis.
    GO:0032264    IMP salvage    Any process which produces inosine monophosphate from derivatives of it, without de novo synthesis.
    GO:0009116    nucleoside metabolic process    The chemical reactions and pathways involving a nucleoside, a nucleobase linked to either beta-D-ribofuranose (a ribonucleoside) or 2-deoxy-beta-D-ribofuranose, (a deoxyribonucleoside), e.g. adenosine, guanosine, inosine, cytidine, uridine and deoxyadenosine, deoxyguanosine, deoxycytidine and thymidine (= deoxythymidine).
    GO:0006166    purine ribonucleoside salvage    Any process which produces a purine nucleoside from derivatives of it, without de novo synthesis.
cellular component
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    GO:0005829    cytosol    The part of the cytoplasm that does not contain organelles but which does contain other particulate matter, such as protein complexes.

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 Related Entries

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

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        HPRT_ECOLI | P0A9M21g9s 1grv

(-) Related Entries Specified in the PDB File

1a97 1A97 CONTAINS XANTHINE-GUANINE PHOSPHORIBOSYLTRANSFERASE COMPLEXED WITH GMP
1g9s 1G9S CONTAINS HYPOXANTHINE PHOSPHORIBOSYLTRANSFERASE COMPLEXED WITH IMP