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(-) Description

Title :  X-RAY STRUCTURE OF SAICAR SYNTHETASE (PURC) FROM STREPTOCOCCUS PNEUMONIAE COMPLEXED WITH ADP AND MG2+
 
Authors :  L. W. -M. Fung, M. E. Johnson, C. Abad-Zapatero, N. W. Wolf
Date :  04 Jun 12  (Deposition) - 05 Jun 13  (Release) - 05 Jun 13  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  2.60
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Purine Biosynthesis Pathway, Atp-Grasp Fold, Saicar Synthetase, Cair Binding, Ligase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  

PubMed: search

(-) Compounds

Molecule 1 - PHOSPHORIBOSYLAMINOIMIDAZOLE-SUCCINOCARBOXAMIDE SYNTHASE
    Chains: A, B
    EC Number: 6.3.2.6
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PET15B
    Expression System Strain: BL21-GOLD
    Expression System Taxid: 469008
    Expression System Vector Type: PLASMID
    Gene: PURC, SP_0044
    Organism Scientific: STREPTOCOCCUS PNEUMONIAE
    Organism Taxid: 1313
    Synonym: SAICAR SYNTHETASE

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit : AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (4, 7)

Asymmetric/Biological Unit (4, 7)
No.NameCountTypeFull Name
1ACT2Ligand/IonACETATE ION
2ADP2Ligand/IonADENOSINE-5'-DIPHOSPHATE
3CL1Ligand/IonCHLORIDE ION
4MG2Ligand/IonMAGNESIUM ION

(-) Sites  (7, 7)

Asymmetric Unit (7, 7)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREGLU A:178 , ASP A:191 , ADP A:302 , HOH A:486BINDING SITE FOR RESIDUE MG A 301
2AC2SOFTWARETYR A:7 , GLY A:9 , LYS A:10 , ALA A:11 , LYS A:12 , HIS A:68 , LYS A:81 , VAL A:83 , ILE A:85 , LYS A:122 , GLU A:178 , ASP A:191 , MG A:301 , HOH A:421BINDING SITE FOR RESIDUE ADP A 302
3AC3SOFTWAREARG A:103BINDING SITE FOR RESIDUE CL A 303
4AC4SOFTWAREARG A:93 , SER A:99 , ARG A:199BINDING SITE FOR RESIDUE ACT A 304
5AC5SOFTWAREASP B:191 , ADP B:302 , HOH B:455BINDING SITE FOR RESIDUE MG B 301
6AC6SOFTWARETYR B:7 , GLY B:9 , LYS B:10 , ALA B:11 , LYS B:12 , ILE B:14 , LYS B:81 , VAL B:83 , ILE B:85 , LYS B:122 , GLU B:178 , ASP B:191 , MG B:301 , HOH B:455BINDING SITE FOR RESIDUE ADP B 302
7AC7SOFTWAREARG B:93 , SER B:99 , ARG B:199 , HOH B:417 , HOH B:474BINDING SITE FOR RESIDUE ACT B 303

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 4FGR)

(-) Cis Peptide Bonds  (2, 2)

Asymmetric/Biological Unit
No.Residues
1Glu A:113 -Thr A:114
2Glu B:113 -Thr B:114

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 4FGR)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 4FGR)

(-) Exons   (0, 0)

(no "Exon" information available for 4FGR)

(-) 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:235
                                                                                                                                                                                                                                                                           
               SCOP domains d4fgra_ A: automated matches                                                                                                                                                                                                                SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ....eeee...eeeee.....eeeeee..eee......eee..hhhhhhhhhhhhhhhhhhhh.....eeee....eeeee..ee..eeeeeeee.hhhhhhhhh.....eeeeeeeeeee.hhhhh....hhhhhhhh...hhhhhhhhhhhhhhhhhhhhhhhhhh..eeeee...eee.....eee........eeee........hhhhhh...hhhhhhhhhhhhhh... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 4fgr A   1 MSKQLIYSGKAKDIYTTEDENLIISTYKDQATAFNGVKKEQIAGKGVLNNQISSFIFEKLNVAGVATHFVEKLSDTEQLNKKVKIIPLEVVLRNYTAGSFSKRFGVDEGIALETPIVEFYYKNDDLDDPFINDEHVKFLQIAGDQQIAYLKEETRRINELLKVWFAEIGLKLIDFKLEFGFDKDGKIILADEFSPDNCRLWDADGNHMDKDVFRRGLGELTDVYEIVWEKLQELK 235
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230     


Chain B from PDB  Type:PROTEIN  Length:233
                                                                                                                                                                                                                                                                         
               SCOP domains d4fgrb_ B: automated matches                                                                                                                                                                                                              SCOP domains
               CATH domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...eeee...eeee......eeeeee..eee......eee..hhhhhhhhhhhhhhhhhhhh.....eeee....eeeee.eee..eeeeeeee.hhhhhhhhh.....eeeeeeeeeee.hhhhh..eehhhhhhhhh....hhhhhhhhhhhhhhhhhhhhhhh..eeeeeeee.eeee....eee........eeeee.......hhhhhhh..hhhhhhhhhhhhhh.. Sec.struct. author
                 SAPs(SNPs) ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 4fgr B   2 SKQLIYSGKAKDIYTTEDENLIISTYKDQATAFNGVKKEQIAGKGVLNNQISSFIFEKLNVAGVATHFVEKLSDTEQLNKKVKIIPLEVVLRNYTAGSFSKRFGVDEGIALETPIVEFYYKNDDLDDPFINDEHVKFLQIAGDQQIAYLKEETRRINELLKVWFAEIGLKLIDFKLEFGFDKDGKIILADEFSPDNCRLWDADGNHMDKDVFRRGLGELTDVYEIVWEKLQEL 234
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141       151       161       171       181       191       201       211       221       231
   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, 2)

Asymmetric/Biological Unit
(-)
Class: Alpha and beta proteins (a+b) (23004)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 4FGR)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 4FGR)

(-) Gene Ontology  (6, 6)

Asymmetric/Biological Unit(hide GO term definitions)

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  Cis Peptide Bonds
    Glu A:113 - Thr A:114   [ RasMol ]  
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  4fgr
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  PUR7_STRPN | Q07296
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  6.3.2.6
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 Related Entries

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

UniProtKB/Swiss-Prot
        PUR7_STRPN | Q07296: 4fe2 4nye

(-) Related Entries Specified in the PDB File

(no "Related Entries Specified in the PDB File" available for 4FGR)