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(-) Description

Title :  STRUCTURE OF THE N-TERMINAL DOMAIN OF THE E. COLI PROTEIN MQSA (YGIT/B3021)
 
Authors :  B. L. Brown, J. M. Arruda, W. Peti, R. Page
Date :  16 Feb 09  (Deposition) - 12 Jan 10  (Release) - 13 Jul 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.70
Chains :  Asym./Biol. Unit :  A
Keywords :  Helix-Turn-Helix, Zn-Binding Protein, Dna-Binding, Transcription, Transcription Regulation, Dna Binding Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  B. L. Brown, S. Grigoriu, Y. Kim, J. M. Arruda, A. Davenport, T. K. Wood, W. Peti, R. Page
Three Dimensional Structure Of The Mqsr:Mqsa Complex: A Novel Ta Pair Comprised Of A Toxin Homologous To Rele And A Antitoxin With Unique Properties.
Plos Pathog. V. 5 E1000 2009
PubMed-ID: 20041169  |  Reference-DOI: 10.1371/JOURNAL.PPAT.1000706

(-) Compounds

Molecule 1 - HTH-TYPE TRANSCRIPTIONAL REGULATOR MQSA (YGIT/B3021)
    Chains: A
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: RP1B
    Expression System Strain: BL21 DE3 RIL
    Expression System Taxid: 562
    Expression System Vector Type: PLASMID
    Fragment: N-TERMINAL DOMAIN
    Gene: B3021, JW2989, YGIT
    Organism Scientific: ESCHERICHIA COLI K-12
    Organism Taxid: 83333
    Strain: ESCHERICHIA COLI STR. K12

 Structural Features

(-) Chains, Units

  1
Asymmetric/Biological Unit : A

Summary Information (see also Sequences/Alignments below)

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

Asymmetric/Biological Unit (2, 2)
No.NameCountTypeFull Name
1PE41Ligand/Ion2-{2-[2-(2-{2-[2-(2-ETHOXY-ETHOXY)-ETHOXY]-ETHOXY}-ETHOXY)-ETHOXY]-ETHOXY}-ETHANOL
2ZN1Ligand/IonZINC ION

(-) Sites  (2, 2)

Asymmetric Unit (2, 2)
No.NameEvidenceResiduesDescription
1AC1SOFTWARECYS A:3 , CYS A:6 , CYS A:37 , CYS A:40BINDING SITE FOR RESIDUE ZN A 121
2AC2SOFTWAREPRO A:19 , TYR A:20 , ARG A:61 , HOH A:122 , HOH A:149 , HOH A:157 , HOH A:171BINDING SITE FOR RESIDUE PE4 A 77

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3GA8)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3GA8)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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(-) PROSITE Motifs  (0, 0)

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(-) Exons   (0, 0)

(no "Exon" information available for 3GA8)

(-) Sequences/Alignments

Asymmetric/Biological Unit
   Reformat: Number of residues per line =  ('0' or empty: single-line sequence representation)
  Number of residues per labelling interval =   
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Chain A from PDB  Type:PROTEIN  Length:67
 aligned with MQSA_ECOLI | Q46864 from UniProtKB/Swiss-Prot  Length:131

    Alignment length:67
                                    10        20        30        40        50        60       
            MQSA_ECOLI    1 MKCPVCHQGEMVSGIKDIPYTFRGRKTVLKGIHGLYCVHCEESIMNKEESDAFMAQVKAFRASVNAE 67
               SCOP domains ------------------------------------------------------------------- SCOP domains
               CATH domains ------------------------------------------------------------------- CATH domains
               Pfam domains ------------------------------------------------------------------- Pfam domains
         Sec.struct. author ..........eeeeeeeeeeee..eeeeeeeeeeeee.....ee.hhhhhhhhhhhhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------- Transcript
                  3ga8 A  1 MKCPVCHQGEMVSGIKDIPYTFRGRKTVLKGIHGLYCVHCEESIMNKEESDAFMAQVKAFRASVNAE 67
                                    10        20        30        40        50        60
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 Classification and Annotation

(-) SCOP Domains  (0, 0)

(no "SCOP Domain" information available for 3GA8)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3GA8)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 3GA8)

(-) Gene Ontology  (6, 6)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (MQSA_ECOLI | Q46864)
molecular function
    GO:0003677    DNA binding    Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
    GO:0046872    metal ion binding    Interacting selectively and non-covalently with any metal ion.
    GO:0005515    protein binding    Interacting selectively and non-covalently with any protein or protein complex (a complex of two or more proteins that may include other nonprotein molecules).
    GO:0043565    sequence-specific DNA binding    Interacting selectively and non-covalently with DNA of a specific nucleotide composition, e.g. GC-rich DNA binding, or with a specific sequence motif or type of DNA e.g. promotor binding or rDNA binding.
biological process
    GO:0006355    regulation of transcription, DNA-templated    Any process that modulates the frequency, rate or extent of cellular DNA-templated transcription.
    GO:0006351    transcription, DNA-templated    The cellular synthesis of RNA on a template of DNA.

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  MQSA_ECOLI | Q46864
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 Related Entries

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

UniProtKB/Swiss-Prot
        MQSA_ECOLI | Q46864: 2kz8 3fmy 3gn5 3hi2 3o9x

(-) Related Entries Specified in the PDB File

3fmy STRUCTURE OF THE C-TERMINAL DOMAIN OF YGIT
3gn5 STRUCTURE OF THE E. COLI PROTEIN MQSA (YGIT/B3021)
3hi2 STRUCTURE OF THE N-TERMINAL DOMAIN OF THE E. COLI ANTITOXIN MQSA (YGIT/B3021) IN COMPLEX WITH THE E. COLI TOXIN MQSR (YGIU/B3022)