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(-) Description

Title :  CRYSTAL STRUCTURE OF E. COLI PURE, AN UNUSUAL MUTASE THAT CATALYZES THE CONVERSION OF N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE (N5-CAIR) TO 4-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE (CAIR) IN THE PURINE BIOSYNTHETIC PATHWAY
 
Authors :  S. E. Ealick, I. I. Mathews
Date :  10 May 99  (Deposition) - 10 Nov 99  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.50
Chains :  Asym. Unit :  A
Biol. Unit 1:  A  (8x)
Keywords :  Three-Layer (Alpha-Beta-Alpha) Sandwich, Lyase (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  I. I. Mathews, T. J. Kappock, J. Stubbe, S. E. Ealick
Crystal Structure Of Escherichia Coli Pure, An Unusual Mutase In The Purine Biosynthetic Pathway.
Structure Fold. Des. V. 7 1395 1999
PubMed-ID: 10574791  |  Reference-DOI: 10.1016/S0969-2126(00)80029-5
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - N5-CARBOXYAMINOIMIDAZOLE RIBONUCLEOTIDE MUTASE
    Chains: A
    EC Number: 4.1.1.21
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Gene: PURE
    Expression System Plasmid: PNC2
    Expression System Strain: B834(DE3)
    Expression System Taxid: 562
    Organism Scientific: ESCHERICHIA COLI
    Organism Taxid: 562
    Synonym: PURE

 Structural Features

(-) Chains, Units

  1
Asymmetric Unit : A
Biological Unit 1 (8x): A

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 4)

Asymmetric Unit (1, 4)
No.NameCountTypeFull Name
1MSE4Mod. Amino AcidSELENOMETHIONINE
Biological Unit 1 (1, 32)
No.NameCountTypeFull Name
1MSE32Mod. Amino AcidSELENOMETHIONINE

(-) Sites  (0, 0)

(no "Site" information available for 1QCZ)

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1QCZ)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

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

(-) Exons   (0, 0)

(no "Exon" information available for 1QCZ)

(-) 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:163
 aligned with PURE_ECO57 | P0AG19 from UniProtKB/Swiss-Prot  Length:169

    Alignment length:163
                                    16        26        36        46        56        66        76        86        96       106       116       126       136       146       156       166   
           PURE_ECO57     7 PARVAIVMGSKSDWATMQFAAEIFEILNVPHHVEVVSAHRTPDKLFSFAESAEENGYQVIIAGAGGAAHLPGMIAAKTLVPVLGVPVQSAALSGVDSLYSIVQMPRGIPVGTLAIGKAGAANAALLAAQILATHDKELHQRLNDWRKAQTDEVLENPDPRGAA 169
               SCOP domains d1qcza_ A: N5-CAIR mutase (phosphoribosylaminoimidazole carboxylase, PurE)                                                                                          SCOP domains
               CATH domains 1qczA00 A:7-169  [code=3.40.50.7700, no name defined]                                                                                                               CATH domains
               Pfam domains -AIRC-1qczA01 A:8-159                                                                                                                                    ---------- Pfam domains
         Sec.struct. author ...eeeee.hhhhhhhhhhhhhhhhhhh..eeeee.....hhhhhhhhhhhh......eeeeee....hhhhhhhhh....eeeee.......hhhhhhhhhh.......ee...hhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhh........ Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1qcz A   7 PARVAIVmGSKSDWATmQFAAEIFEILNVPHHVEVVSAHRTPDKLFSFAESAEENGYQVIIAGAGGAAHLPGmIAAKTLVPVLGVPVQSAALSGVDSLYSIVQmPRGIPVGTLAIGKAGAANAALLAAQILATHDKELHQRLNDWRKAQTDEVLENPDPRGAA 169
                                   |16      | 26        36        46        56        66        76  |     86        96       106   |   116       126       136       146       156       166   
                                  14-MSE   23-MSE                                                  79-MSE                        110-MSE                                                       


Chain A from PDB  Type:PROTEIN  Length:163
 aligned with PURE_ECOLI | P0AG18 from UniProtKB/Swiss-Prot  Length:169

    Alignment length:163
                                    16        26        36        46        56        66        76        86        96       106       116       126       136       146       156       166   
           PURE_ECOLI     7 PARVAIVMGSKSDWATMQFAAEIFEILNVPHHVEVVSAHRTPDKLFSFAESAEENGYQVIIAGAGGAAHLPGMIAAKTLVPVLGVPVQSAALSGVDSLYSIVQMPRGIPVGTLAIGKAGAANAALLAAQILATHDKELHQRLNDWRKAQTDEVLENPDPRGAA 169
               SCOP domains d1qcza_ A: N5-CAIR mutase (phosphoribosylaminoimidazole carboxylase, PurE)                                                                                          SCOP domains
               CATH domains 1qczA00 A:7-169  [code=3.40.50.7700, no name defined]                                                                                                               CATH domains
               Pfam domains -AIRC-1qczA01 A:8-159                                                                                                                                    ---------- Pfam domains
         Sec.struct. author ...eeeee.hhhhhhhhhhhhhhhhhhh..eeeee.....hhhhhhhhhhhh......eeeeee....hhhhhhhhh....eeeee.......hhhhhhhhhh.......ee...hhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhh........ Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 1qcz A   7 PARVAIVmGSKSDWATmQFAAEIFEILNVPHHVEVVSAHRTPDKLFSFAESAEENGYQVIIAGAGGAAHLPGmIAAKTLVPVLGVPVQSAALSGVDSLYSIVQmPRGIPVGTLAIGKAGAANAALLAAQILATHDKELHQRLNDWRKAQTDEVLENPDPRGAA 169
                                   |16      | 26        36        46        56        66        76  |     86        96       106   |   116       126       136       146       156       166   
                                  14-MSE   23-MSE                                                  79-MSE                        110-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, 1)

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

(-) CATH Domains  (1, 1)

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

(-) Pfam Domains  (1, 1)

Asymmetric Unit
(-)
Clan: no clan defined [family: AIRC] (12)

(-) Gene Ontology  (5, 9)

Asymmetric Unit(hide GO term definitions)
Chain A   (PURE_ECO57 | P0AG19)
molecular function
    GO:0034023    5-(carboxyamino)imidazole ribonucleotide mutase activity    Catalysis of the reaction: 5-carboxyamino-1-(5-phospho-D-ribosyl)imidazole = 5-amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxylate.
    GO:0016853    isomerase activity    Catalysis of the geometric or structural changes within one molecule. Isomerase is the systematic name for any enzyme of EC class 5.
biological process
    GO:0006189    'de novo' IMP biosynthetic process    The chemical reactions and pathways resulting in the formation of IMP, inosine monophosphate, by the stepwise assembly of a purine ring on ribose 5-phosphate.
    GO:0006164    purine nucleotide biosynthetic process    The chemical reactions and pathways resulting in the formation of a purine nucleotide, a compound consisting of nucleoside (a purine base linked to a deoxyribose or ribose sugar) esterified with a phosphate group at either the 3' or 5'-hydroxyl group of the sugar.

Chain A   (PURE_ECOLI | P0AG18)
molecular function
    GO:0034023    5-(carboxyamino)imidazole ribonucleotide mutase activity    Catalysis of the reaction: 5-carboxyamino-1-(5-phospho-D-ribosyl)imidazole = 5-amino-1-(5-phospho-D-ribosyl)imidazole-4-carboxylate.
    GO:0016853    isomerase activity    Catalysis of the geometric or structural changes within one molecule. Isomerase is the systematic name for any enzyme of EC class 5.
biological process
    GO:0006189    'de novo' IMP biosynthetic process    The chemical reactions and pathways resulting in the formation of IMP, inosine monophosphate, by the stepwise assembly of a purine ring on ribose 5-phosphate.
    GO:0006164    purine nucleotide biosynthetic process    The chemical reactions and pathways resulting in the formation of a purine nucleotide, a compound consisting of nucleoside (a purine 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: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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  1qcz
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  4.1.1.21
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 Related Entries

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

UniProtKB/Swiss-Prot
        PURE_ECO57 | P0AG19: 1d7a
        PURE_ECOLI | P0AG18: 1d7a 2ate 2nsh 2nsj 2nsl

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