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(-) Description

Title :  CRYSTAL STRUCTURE OF OMEGA TRANSCRIPTIONAL REPRESSOR AT 1.5A RESOLUTION
 
Authors :  K. Murayama, P. Orth, A. B. De La Hoz, J. C. Alonso, W. Saenger
Date :  11 Oct 01  (Deposition) - 12 Dec 01  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.50
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Transcriptional Repressor, Ribbon-Helix-Helix, Gene Regulation (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  K. Murayama, P. Orth, A. B. De La Hoz, J. C. Alonso, W. Saenger
Crystal Structure Of Omega Transcriptional Repressor Encoded By Streptococcus Pyogenes Plasmid Psm19035 At 1. 5 A Resolution.
J. Mol. Biol. V. 314 789 2001
PubMed-ID: 11733997  |  Reference-DOI: 10.1006/JMBI.2001.5157
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - OMEGA TRANSCRIPTIONAL REPRESSOR
    Chains: A, B
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PSM19035
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Organism Scientific: STREPTOCOCCUS PYOGENES
    Organism Taxid: 1314
    Synonym: HYPOTHETICAL PROTEIN OMEGA

 Structural Features

(-) Chains, Units

  12
Asymmetric/Biological Unit : AB

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (0, 0)

(no "Ligand,Modified Residues,Ions" information available for 1IRQ)

(-) Sites  (0, 0)

(no "Site" information available for 1IRQ)

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

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

(-) Exons   (0, 0)

(no "Exon" information available for 1IRQ)

(-) 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:48
 aligned with Q57468_STRPY | Q57468 from UniProtKB/TrEMBL  Length:71

    Alignment length:48
                                    33        43        53        63        
          Q57468_STRPY   24 IMGDKTVRVRADLHHIIKIETAKNGGNVKEVMDQALEEYIRKYLPDKL 71
               SCOP domains d1irqa_ A: Omega transcriptional repressor       SCOP domains
               CATH domains 1irqA00 A:24-71 Met repressor-like               CATH domains
               Pfam domains ------------------------------------------------ Pfam domains
         Sec.struct. author ...eeeeeeehhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhh.... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------ Transcript
                  1irq A 24 IMGDKTVRVRADLHHIIKIETAKNGGNVKEVMDQALEEYIRKYLPDKL 71
                                    33        43        53        63        


Chain B from PDB  Type:PROTEIN  Length:49
 aligned with Q57468_STRPY | Q57468 from UniProtKB/TrEMBL  Length:71

    Alignment length:49
                                    32        42        52        62         
          Q57468_STRPY   23 DIMGDKTVRVRADLHHIIKIETAKNGGNVKEVMDQALEEYIRKYLPDKL 71
               SCOP domains d1irqb_ B: Omega transcriptional repressor        SCOP domains
               CATH domains 1irqB00 B:23-71 Met repressor-like                CATH domains
               Pfam domains ------------------------------------------------- Pfam domains
         Sec.struct. author ....eeeeeeehhhhhhhhhhhhhh..hhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------- Transcript
                  1irq B 23 DIMGDKTVRVRADLHHIIKIETAKNGGNVKEVMDQALEEYIRKYLPDKL 71
                                    32        42        52        62
   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: All alpha proteins (14657)

(-) CATH Domains  (1, 2)

Asymmetric/Biological Unit
(-)
Class: Mainly Alpha (13335)

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (1, 1)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,B   (Q57468_STRPY | Q57468)
biological process
    GO:0006355    regulation of transcription, DNA-templated    Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.

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  1irq
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 Related Entries

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

UniProtKB/TrEMBL
        Q57468_STRPY | Q57468: 2bnw 2bnz 2cax

(-) Related Entries Specified in the PDB File

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