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(-) Description

Title :  A 1.4 ANGSTROM CRYSTAL STRUCTURE FOR THE HYPOXANTHINE PHOSPHORIBOSYLTRANSFERASE OF TRYPANOSOMA CRUZI
 
Authors :  P. J. Focia, S. P. Craig Iii, R. Nieves-Alicea, R. J. Fletterick, A. E. Eakin
Date :  30 Sep 98  (Deposition) - 07 Oct 99  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.41
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Transferase, Phosphoribosyltransferase, Purine Salvage, Nucleotide Metabolism (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  P. J. Focia, S. P. Craig 3Rd. , R. Nieves-Alicea, R. J. Fletterick, A. E. Eakin
A 1. 4 A Crystal Structure For The Hypoxanthine Phosphoribosyltransferase Of Trypanosoma Cruzi.
Biochemistry V. 37 15066 1998
PubMed-ID: 9790669  |  Reference-DOI: 10.1021/BI981052S
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - PROTEIN (HYPOXANTHINE PHOSPHORIBOSYLTRANSFERASE)
    Chains: A, B
    EC Number: 2.4.2.8
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Taxid: 562
    Organism Scientific: TRYPANOSOMA CRUZI
    Organism Taxid: 5693

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit : AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (2, 4)

Asymmetric/Biological Unit (2, 4)
No.NameCountTypeFull Name
1FMB2Ligand/IonFORMYCIN B
2MES2Ligand/Ion2-(N-MORPHOLINO)-ETHANESULFONIC ACID

(-) Sites  (4, 4)

Asymmetric Unit (4, 4)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASP A:115 , LYS A:143 , ALA A:163 , PHE A:164 , VAL A:165 , ASP A:171BINDING SITE FOR RESIDUE FMB A 900
2AC2SOFTWAREASP B:115 , LYS B:143 , ALA B:163 , PHE B:164 , VAL B:165 , ASP B:171BINDING SITE FOR RESIDUE FMB B 901
3AC3SOFTWAREGLU A:111 , ILE A:113 , VAL A:114 , ASP A:115 , THR A:116 , ALA A:117 , LEU A:118 , THR A:119 , LEU A:120BINDING SITE FOR RESIDUE MES A 800
4AC4SOFTWAREILE B:113 , VAL B:114 , ASP B:115 , THR B:116 , ALA B:117 , LEU B:118 , THR B:119 , LEU B:120BINDING SITE FOR RESIDUE MES B 801

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1TC1)

(-) Cis Peptide Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1Leu A:51 -Lys A:52
2Leu B:51 -Lys B:52

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1TC1)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1TC1)

(-) Exons   (0, 0)

(no "Exon" information available for 1TC1)

(-) 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:175
 aligned with Q27796_TRYCR | Q27796 from UniProtKB/TrEMBL  Length:221

    Alignment length:184
                                    14        24        34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184    
         Q27796_TRYCR     5 YEFAEKILFTEEEIRTRIMEVAKRIADDYKGKGLRPYVNPLVLISVLKGSFMFTADLCRALSDFNVPVRMEFICVSSYGEGVTSSGQVRMLLDTRHSIEGHHVLIVEDIVDTALTLNYLYHMYFTRRPASLKTVVLLDKREGRRVPFSADYVVANIPNAFVIGYGLDYDDTYRELRDIVVLRPE 188
               SCOP domains d1tc1a_ A: Hypoxanthine PRTase                                                                                                                                                           SCOP domains
               CATH domains 1tc1A00 A:5-188  [code=3.40.50.2020, no name defined]                                                                                                                                    CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..........hhhhhhhhhhhhhhhhhh............eeeeee....hhhhhhhhhhhhhh...eeeeeeeee..---------.eeee.........eeeeee......hhhhhhhhhhhhh...eeeeee........................eee................eeee.. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1tc1 A   5 YEFAEKILFTEEEIRTRIKEVAKRIADDYKGKGLRPYVNPLVLISVLKGSFMFTADLCRALCDFNVPVRMEFICVSSY---------VRMLLDTRHSIEGHHVLIVEDIVDTALTLNYLYHMYFTRRPASLKTVVLLDKREGRRVPFSADYVVANIPNAFVIGYGLDYDDTYRELRDIVVLRPE 188
                                    14        24        34        44        54        64        74       | -       |94       104       114       124       134       144       154       164       174       184    
                                                                                                        82        92                                                                                                


Chain A from PDB  Type:PROTEIN  Length:175
 aligned with Q4DRC4_TRYCC | Q4DRC4 from UniProtKB/TrEMBL  Length:241

    Alignment length:184
                                    34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204    
         Q4DRC4_TRYCC    25 YEFAEKILFTEEEIRTRIKEVAKRIADDYKGKGLRPYVNPLVLISVLKGSFMFTADLCRALCDFNVPVRMEFICVSSYGEGLTSSGQVRMLLDTRHSIEGHHVLIVEDIVDTALTLNYLYHMYFTRRPASLKTVVLLDKREGRRVPFSADYVVANIPNAFVIGYGLDYDDTYRELRDIVVLRPE 208
               SCOP domains d1tc1a_ A: Hypoxanthine PRTase                                                                                                                                                           SCOP domains
               CATH domains 1tc1A00 A:5-188  [code=3.40.50.2020, no name defined]                                                                                                                                    CATH domains
               Pfam domains ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..........hhhhhhhhhhhhhhhhhh............eeeeee....hhhhhhhhhhhhhh...eeeeeeeee..---------.eeee.........eeeeee......hhhhhhhhhhhhh...eeeeee........................eee................eeee.. Sec.struct. author
                 SAPs(SNPs) ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1tc1 A   5 YEFAEKILFTEEEIRTRIKEVAKRIADDYKGKGLRPYVNPLVLISVLKGSFMFTADLCRALCDFNVPVRMEFICVSSY---------VRMLLDTRHSIEGHHVLIVEDIVDTALTLNYLYHMYFTRRPASLKTVVLLDKREGRRVPFSADYVVANIPNAFVIGYGLDYDDTYRELRDIVVLRPE 188
                                    14        24        34        44        54        64        74       | -       |94       104       114       124       134       144       154       164       174       184    
                                                                                                        82        92                                                                                                


Chain B from PDB  Type:PROTEIN  Length:186
 aligned with Q27796_TRYCR | Q27796 from UniProtKB/TrEMBL  Length:221

    Alignment length:186
                                    14        24        34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184      
         Q27796_TRYCR     5 YEFAEKILFTEEEIRTRIMEVAKRIADDYKGKGLRPYVNPLVLISVLKGSFMFTADLCRALSDFNVPVRMEFICVSSYGEGVTSSGQVRMLLDTRHSIEGHHVLIVEDIVDTALTLNYLYHMYFTRRPASLKTVVLLDKREGRRVPFSADYVVANIPNAFVIGYGLDYDDTYRELRDIVVLRPEVY 190
               SCOP domains d1tc1b_ B: Hypoxanthine PRTase                                                                                                                                                             SCOP domains
               CATH domains 1tc1B00 B:5-190  [code=3.40.50.2020, no name defined]                                                                                                                                      CATH domains
           Pfam domains (1) ----Pribosyltran-1tc1B01 B:9-141                                                                                                         ------------------------------------------------- Pfam domains (1)
           Pfam domains (2) ----Pribosyltran-1tc1B02 B:9-141                                                                                                         ------------------------------------------------- Pfam domains (2)
         Sec.struct. author ...eeee...hhhhhhhhhhhhhhhhhhh...........eeeeee..hhhhhhhhhhhhhhh....eeeeeeeeee..........eeeee.........eeeeee......hhhhhhhhhhhhh...eeeeee....hhh....................................eee..... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1tc1 B   5 YEFAEKILFTEEEIRTRIKEVAKRIADDYKGKGLRPYVNPLVLISVLKGSFMFTADLCRALCDFNVPVRMEFICVSSYGEGLTSSGQVRMLLDTRHSIEGHHVLIVEDIVDTALTLNYLYHMYFTRRPASLKTVVLLDKREGRRVPFSADYVVANIPNAFVIGYGLDYDDTYRELRDIVVLRPEVY 190
                                    14        24        34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184      


Chain B from PDB  Type:PROTEIN  Length:186
 aligned with Q4DRC4_TRYCC | Q4DRC4 from UniProtKB/TrEMBL  Length:241

    Alignment length:186
                                    34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184       194       204      
         Q4DRC4_TRYCC    25 YEFAEKILFTEEEIRTRIKEVAKRIADDYKGKGLRPYVNPLVLISVLKGSFMFTADLCRALCDFNVPVRMEFICVSSYGEGLTSSGQVRMLLDTRHSIEGHHVLIVEDIVDTALTLNYLYHMYFTRRPASLKTVVLLDKREGRRVPFSADYVVANIPNAFVIGYGLDYDDTYRELRDIVVLRPEVY 210
               SCOP domains d1tc1b_ B: Hypoxanthine PRTase                                                                                                                                                             SCOP domains
               CATH domains 1tc1B00 B:5-190  [code=3.40.50.2020, no name defined]                                                                                                                                      CATH domains
           Pfam domains (1) ----Pribosyltran-1tc1B01 B:9-141                                                                                                         ------------------------------------------------- Pfam domains (1)
           Pfam domains (2) ----Pribosyltran-1tc1B02 B:9-141                                                                                                         ------------------------------------------------- Pfam domains (2)
         Sec.struct. author ...eeee...hhhhhhhhhhhhhhhhhhh...........eeeeee..hhhhhhhhhhhhhhh....eeeeeeeeee..........eeeee.........eeeeee......hhhhhhhhhhhhh...eeeeee....hhh....................................eee..... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1tc1 B   5 YEFAEKILFTEEEIRTRIKEVAKRIADDYKGKGLRPYVNPLVLISVLKGSFMFTADLCRALCDFNVPVRMEFICVSSYGEGLTSSGQVRMLLDTRHSIEGHHVLIVEDIVDTALTLNYLYHMYFTRRPASLKTVVLLDKREGRRVPFSADYVVANIPNAFVIGYGLDYDDTYRELRDIVVLRPEVY 190
                                    14        24        34        44        54        64        74        84        94       104       114       124       134       144       154       164       174       184
   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/Biological Unit
(-)
Class: Alpha and beta proteins (a/b) (23833)

(-) CATH Domains  (1, 2)

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

(-) Pfam Domains  (1, 2)

Asymmetric/Biological Unit
(-)
Clan: PRTase-like (59)

(-) Gene Ontology  (7, 13)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,B   (Q27796_TRYCR | Q27796)
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: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: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.

Chain A,B   (Q4DRC4_TRYCC | Q4DRC4)
molecular function
    GO:0004422    hypoxanthine phosphoribosyltransferase activity    Catalysis of the reaction: IMP + diphosphate = hypoxanthine + 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: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.

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 Related Entries

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

UniProtKB/Swiss-Prot
        Q27796_TRYCR | Q27796: 1i0i 1i0l 1i13 1i14 1p17 1p18 1p19 1tc2
UniProtKB/TrEMBL
        Q4DRC4_TRYCC | Q4DRC4: 1i0i 1i0l 1i13 1i14 1p17 1p18 1p19 1tc2 5euc

(-) Related Entries Specified in the PDB File

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