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(-) Description

Title :  CRYSTAL STRUCTURE OF S. TYPHIMURIUM H-NS 1-83
 
Authors :  S. T. Arold, P. G. Leonard, G. N. Parkinson, J. E. Ladbury
Date :  30 Jun 10  (Deposition) - 01 Sep 10  (Release) - 22 Sep 10  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  3.70
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A (1x),B (1x)
Biol. Unit 2:  A,B  (1x)
Keywords :  Dimer, Oligomerisation, Dna Condensation, Dna Binding Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  S. T. Arold, P. G. Leonard, G. N. Parkinson, J. E. Ladbury
H-Ns Forms A Superhelical Protein Scaffold For Dna Condensation.
Proc. Natl. Acad. Sci. Usa V. 107 15728 2010
PubMed-ID: 20798056  |  Reference-DOI: 10.1073/PNAS.1006966107

(-) Compounds

Molecule 1 - DNA-BINDING PROTEIN H-NS
    Chains: A, B
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PET14B
    Expression System Strain: BL21 (DE3) PLYSS
    Expression System Taxid: 469008
    Expression System Vector Type: PLASMID
    Fragment: UNP RESIDUES 1-83
    Gene: H-NS, HNS, HNSA, OSMZ, STM1751
    Mutation: YES
    Organism Scientific: SALMONELLA ENTERICA SUBSP. ENTERICA SEROVAR TYPHIMURIUM
    Organism Taxid: 90371
    Synonym: HISTONE-LIKE PROTEIN HLP-II, PROTEIN H1, PROTEIN B1

 Structural Features

(-) Chains, Units

  12
Asymmetric Unit : AB
Biological Unit 1 (1x): A (1x)B (1x)
Biological Unit 2 (1x): AB

Summary Information (see also Sequences/Alignments below)

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

(no "Ligand,Modified Residues,Ions" information available for 3NR7)

(-) Sites  (0, 0)

(no "Site" information available for 3NR7)

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 3NR7)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 3NR7)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 3NR7)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 3NR7)

(-) Exons   (0, 0)

(no "Exon" information available for 3NR7)

(-) 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:81
 aligned with HNS_SALTY | P0A1S2 from UniProtKB/Swiss-Prot  Length:137

    Alignment length:81
                                    11        21        31        41        51        61        71        81 
             HNS_SALTY    2 SEALKILNNIRTLRAQARECTLETLEEMLEKLEVVVNERREEESAAAAEVEERTRKLQQYREMLIADGIDPNELLNSMAAA 82
               SCOP domains --------------------------------------------------------------------------------- SCOP domains
               CATH domains --------------------------------------------------------------------------------- CATH domains
               Pfam domains --------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .hhhhhhhhhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------- Transcript
                  3nr7 A  2 SEALKILNNIRTLRAQARESTLETLEEMLEKLEVVVNERREEESAAAAEVEERTRKLQQYREMLIADGIDPNELLNSMAAA 82
                                    11        21        31        41        51        61        71        81 


Chain B from PDB  Type:PROTEIN  Length:81
 aligned with HNS_SALTY | P0A1S2 from UniProtKB/Swiss-Prot  Length:137

    Alignment length:81
                                    11        21        31        41        51        61        71        81 
             HNS_SALTY    2 SEALKILNNIRTLRAQARECTLETLEEMLEKLEVVVNERREEESAAAAEVEERTRKLQQYREMLIADGIDPNELLNSMAAA 82
               SCOP domains --------------------------------------------------------------------------------- SCOP domains
               CATH domains --------------------------------------------------------------------------------- CATH domains
           Pfam domains (1) ----------------------Histone_HNS-3nr7B01 B:24-82                                 Pfam domains (1)
           Pfam domains (2) ----------------------Histone_HNS-3nr7B02 B:24-82                                 Pfam domains (2)
         Sec.struct. author ........hhhhhhhhhhh.hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh..hhhhhhhhhhhh Sec.struct. author
                 SAPs(SNPs) --------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE --------------------------------------------------------------------------------- PROSITE
                 Transcript --------------------------------------------------------------------------------- Transcript
                  3nr7 B  2 SEALKILNNIRTLRAQARESTLETLEEMLEKLEVVVNERREEESAAAAEVEERTRKLQQYREMLIADGIDPNELLNSMAAA 82
                                    11        21        31        41        51        61        71        81
   Legend:   → Mismatch (orange background)
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  extra numbering lines below/above indicate numbering irregularities and modified residue names etc., number ends below/above '|'

 Classification and Annotation

(-) SCOP Domains  (0, 0)

(no "SCOP Domain" information available for 3NR7)

(-) CATH Domains  (0, 0)

(no "CATH Domain" information available for 3NR7)

(-) Pfam Domains  (1, 2)

Asymmetric Unit
(-)
Clan: no clan defined [family: Histone_HNS] (6)

(-) Gene Ontology  (9, 9)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (HNS_SALTY | P0A1S2)
molecular function
    GO:0003680    AT DNA binding    Interacting selectively and non-covalently with oligo(A) and oligo(T) tracts of DNA (AT DNA).
    GO:0003677    DNA binding    Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
    GO:0003681    bent DNA binding    Interacting selectively and non-covalently with DNA in a bent conformation.
    GO:0046983    protein dimerization activity    The formation of a protein dimer, a macromolecular structure consists of two noncovalently associated identical or nonidentical subunits.
biological process
    GO:0016458    gene silencing    Any process carried out at the cellular level that results in either long-term transcriptional repression via action on chromatin structure or RNA mediated, post-transcriptional repression of gene expression.
    GO:0045892    negative regulation of transcription, DNA-templated    Any process that stops, prevents, or reduces the frequency, rate or extent of cellular DNA-templated transcription.
    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.
cellular component
    GO:0005622    intracellular    The living contents of a cell; the matter contained within (but not including) the plasma membrane, usually taken to exclude large vacuoles and masses of secretory or ingested material. In eukaryotes it includes the nucleus and cytoplasm.

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 Related Entries

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        HNS_SALTY | P0A1S2: 2l93 4icg

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