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(-) Description

Title :  A FLEXIBLE LOOP AT THE DIMER INTERFACE IS A PART OF THE ACTIVE SITE OF THE ADJACENT MONOMER OF ESCHERICHIA COLI OROTATE PHOSPHORIBOSYLTRANSFERASE
 
Authors :  A. Henriksen, N. Aghajari, K. F. Jensen, M. Gajhede
Date :  11 Sep 95  (Deposition) - 03 Apr 96  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.40
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Pyrimidine Nucleotide Biosynthesis, Inhibitor-Enzyme Complex, Phosphoribosyltransferase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  A. Henriksen, N. Aghajari, K. F. Jensen, M. Gajhede
A Flexible Loop At The Dimer Interface Is A Part Of The Active Site Of The Adjacent Monomer Of Escherichia Coli Orotate Phosphoribosyltransferase.
Biochemistry V. 35 3803 1996
PubMed-ID: 8620002  |  Reference-DOI: 10.1021/BI952226Y
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - OROTATE PHOSPHORIBOSYLTRANSFERASE
    Chains: A, B
    EC Number: 2.4.2.10
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 562
    Other Details: APO FORM
    Synonym: OPRTASE

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit : AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 2)

Asymmetric/Biological Unit (1, 2)
No.NameCountTypeFull Name
1SO42Ligand/IonSULFATE ION

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREARG A:99 , LYS A:103 , ALA B:71 , TYR B:72 , LYS B:73 , LYS B:100 , HOH B:516BINDING SITE FOR RESIDUE SO4 B 301
2AC2SOFTWAREALA A:71 , TYR A:72 , LYS A:73 , LYS A:100 , HOH A:502 , HOH A:503 , HOH A:514 , ARG B:99BINDING SITE FOR RESIDUE SO4 A 302

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1Ala A:71 -Tyr A:72
2Ala B:71 -Tyr B:72

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (1, 2)

Asymmetric/Biological Unit (1, 2)
 PROSITEUniProtKBPDB
No.IDACDescriptionIDLocationCountLocation
1PUR_PYR_PR_TRANSFERPS00103 Purine/pyrimidine phosphoribosyl transferases signature.PYRE_ECOLI120-132
 		  2A:120-132
B:120-132

(-) Exons   (0, 0)

(no "Exon" information available for 1ORO)

(-) 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    
   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:213
 aligned with PYRE_ECOLI | P0A7E3 from UniProtKB/Swiss-Prot  Length:213

    Alignment length:213
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210   
           PYRE_ECOLI     1 MKPYQRQFIEFALSKQVLKFGEFTLKSGRKSPYFFNAGLFNTGRDLALLGRFYAEALVDSGIEFDLLFGPAYKGIPIATTTAVALAEHHDLDLPYCFNRKEAKDHGEGGNLVGSALQGRVMLVDDVITAGTAIRESMEIIQANGATLAGVLISLDRQERGRGEISAIQEVERDYNCKVISIITLKDLIAYLEEKPEMAEHLAAVKAYREEFGV 213
               SCOP domains d1oroa_ A: Orotate PRTase                                                                                                                                                                                             SCOP domains
               CATH domains 1oroA00 A:1-213  [code=3.40.50.2020, no name defined]                                                                                                                                                                 CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhh.eeee.eeee...eee.eeee.....hhhhhhhhhhhhhhhhhhhh....eeee...hhhhhhhhhhhhhhhhhh...eeeeee..........eeeee...eeeeeee........hhhhhhhhhhh..eeeeeeeeee.........hhhhhhhhhhh.eeeeeeehhhhhhhhh....hhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------------------------------------------------------------------------------------------------PUR_PYR_PR_TR--------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1oro A   1 MKPYQRQFIEFALSKQVLKFGEFTLKSGRKSPYFFNAGLFNTGRDLALLGRFYAEALVDSGIEFDLLFGPAYKGIPIATTTAVALAEHHDLDLPYCFNRKEAKDHGEGGNLVGSALQGRVMLVDDVITAGTAIRESMEIIQANGATLAGVLISLDRQERGRGEISAIQEVERDYNCKVISIITLKDLIAYLEEKPEMAEHLAAVKAYREEFGV 213
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210   


Chain B from PDB  Type:PROTEIN  Length:206
 aligned with PYRE_ECOLI | P0A7E3 from UniProtKB/Swiss-Prot  Length:213

    Alignment length:213
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210   
           PYRE_ECOLI     1 MKPYQRQFIEFALSKQVLKFGEFTLKSGRKSPYFFNAGLFNTGRDLALLGRFYAEALVDSGIEFDLLFGPAYKGIPIATTTAVALAEHHDLDLPYCFNRKEAKDHGEGGNLVGSALQGRVMLVDDVITAGTAIRESMEIIQANGATLAGVLISLDRQERGRGEISAIQEVERDYNCKVISIITLKDLIAYLEEKPEMAEHLAAVKAYREEFGV 213
               SCOP domains d1orob_ B: Orotate PRTase                                                                                                                                                                                             SCOP domains
               CATH domains 1oroB00 B:1-213  [code=3.40.50.2020, no name defined]                                                                                                                                                                 CATH domains
               Pfam domains --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhh.eeee.eeee...eee.eeee.....hhhhhhhhhhhhhhhhhhhh....eeee...hhhhhhhhhhhhhhhhhh...eeeeee..-------.eeeee...eeeeeee.....hhhhhhhhhhhhhh..eeeeeeeeee.........hhhhhhhhhhh.eeeeeeehhhhhhhhh....hhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -----------------------------------------------------------------------------------------------------------------------PUR_PYR_PR_TR--------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1oro B   1 MKPYQRQFIEFALSKQVLKFGEFTLKSGRKSPYFFNAGLFNTGRDLALLGRFYAEALVDSGIEFDLLFGPAYKGIPIATTTAVALAEHHDLDLPYCFNRKE-------GNLVGSALQGRVMLVDDVITAGTAIRESMEIIQANGATLAGVLISLDRQERGRGEISAIQEVERDYNCKVISIITLKDLIAYLEEKPEMAEHLAAVKAYREEFGV 213
                                    10        20        30        40        50        60        70        80        90       100|      110       120       130       140       150       160       170       180       190       200       210   
                                                                                                                              101     109
   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  (1, 2)

Asymmetric/Biological Unit
(-)
Class: Alpha and beta proteins (a/b) (23833)

(-) CATH Domains  (1, 2)

Asymmetric/Biological Unit
(-)
Class: Alpha Beta (26913)

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (10, 10)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,B   (PYRE_ECOLI | P0A7E3)
molecular function
    GO:0000287    magnesium ion binding    Interacting selectively and non-covalently with magnesium (Mg) ions.
    GO:0004588    orotate phosphoribosyltransferase activity    Catalysis of the reaction: orotidine 5'-phosphate + diphosphate = orotate + 5-phospho-alpha-D-ribose 1-diphosphate.
    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:0044205    'de novo' UMP biosynthetic process    The chemical reactions and pathways resulting in the formation of UMP, uridine monophosphate, starting with the synthesis of (S)-dihydroorotate from bicarbonate; UMP biosynthesis may either occur via reduction by quinone, NAD(+) or oxygen.
    GO:0006207    'de novo' pyrimidine nucleobase biosynthetic process    The chemical reactions and pathways resulting in the formation of pyrimidine nucleobases, 1,3-diazine, organic nitrogenous bases, beginning with the synthesis of a pyrimidine ring from simpler precursors.
    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:0006221    pyrimidine nucleotide biosynthetic process    The chemical reactions and pathways resulting in the formation of a pyrimidine nucleotide, a compound consisting of nucleoside (a pyrimidine base linked to a deoxyribose or ribose sugar) esterified with a phosphate group at either the 3' or 5'-hydroxyl group of the sugar.
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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