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(-) Description

Title :  CRYSTAL STRUCTURE OF A SINGLE STRANDED DNA BINDING PROTEIN
 
Authors :  I. D. Kerr, J. H. Naismith
Date :  05 Nov 02  (Deposition) - 25 Jun 03  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.20
Chains :  Asym. Unit :  A,B
Biol. Unit 1:  A  (1x)
Biol. Unit 2:  B  (1x)
Keywords :  Single Stranded Dna, Ob Fold, Dna-Binding Protein (Keyword Search: [Gene Ontology, PubMed, Web (Google)] )
 
Reference :  I. D. Kerr, R. I. M. Wadsworth, L. Cubeddu, W. Blankenfeldt, J. H. Naismith, M. F. White
Insights Into Ssdna Recognition By The Ob Fold From A Structural And Thermodynamic Study Of Sulfolobus Ssb Protein
Embo J. V. 22 2561 2003
PubMed-ID: 12773373  |  Reference-DOI: 10.1093/EMBOJ/CDG272
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - SINGLE STRANDED DNA BINDING PROTEIN
    Chains: A, B
    Engineered: YES
    Expression System: ESCHERICHIA COLI
    Expression System Plasmid: PET19B
    Expression System Strain: BL21(DE3)
    Expression System Taxid: 469008
    Fragment: RESIDUES 1-119
    Organism Scientific: SULFOLOBUS SOLFATARICUS
    Organism Taxid: 273057
    Strain: P2
    Synonym: SSB, SSO2364

 Structural Features

(-) Chains, Units

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

Summary Information (see also Sequences/Alignments below)

(-) Ligands, Modified Residues, Ions  (1, 3)

Asymmetric Unit (1, 3)
No.NameCountTypeFull Name
1SO43Ligand/IonSULFATE ION
Biological Unit 1 (0, 0)
No.NameCountTypeFull Name
1SO4-1Ligand/IonSULFATE ION
Biological Unit 2 (1, 3)
No.NameCountTypeFull Name
1SO43Ligand/IonSULFATE ION

(-) Sites  (3, 3)

Asymmetric Unit (3, 3)
No.NameEvidenceResiduesDescription
1AC1SOFTWAREASN A:34 , ARG A:37 , LYS B:33 , SO4 B:1116 , HOH B:2131 , HOH B:2135 , HOH B:2140BINDING SITE FOR RESIDUE SO4 B1115
2AC2SOFTWAREGLY A:88 , SER A:89 , LYS B:33 , SO4 B:1115 , HOH B:2132 , HOH B:2133 , HOH B:2134 , HOH B:2135 , HOH B:2136BINDING SITE FOR RESIDUE SO4 B1116
3AC3SOFTWAREASN A:34 , THR B:32 , ASN B:34 , ARG B:37 , HOH B:2137 , HOH B:2138 , HOH B:2140 , HOH B:2141BINDING SITE FOR RESIDUE SO4 B1117

(-) SS Bonds  (0, 0)

(no "SS Bond" information available for 1O7I)

(-) Cis Peptide Bonds  (0, 0)

(no "Cis Peptide Bond" information available for 1O7I)

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

(no "SAP(SNP)/Variant" information available for 1O7I)

(-) PROSITE Motifs  (0, 0)

(no "PROSITE Motif" information available for 1O7I)

(-) Exons   (0, 0)

(no "Exon" information available for 1O7I)

(-) 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:115
 aligned with SSB_SULSO | Q97W73 from UniProtKB/Swiss-Prot  Length:148

    Alignment length:115
                                    10        20        30        40        50        60        70        80        90       100       110     
            SSB_SULSO     1 MEEKVGNLKPNMESVNVTVRVLEASEARQIQTKNGVRTISEAIVGDETGRVKLTLWGKHAGSIKEGQVVKIENAWTTAFKGQVQLNAGSKTKIAEASEDGFPESSQIPENTPTAP 115
               SCOP domains d1o7ia_ A: Archaeal ssDNA-binding protein                                                                           SCOP domains
               CATH domains 1o7iA00 A:1-115 Nucleic acid-binding proteins                                                                       CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author ...hhhhh......eeeeeeeeee...eee......eeeeeeeeee..eeeeeeee.hhh.......eeeeeeeeeeee..eeeeee...............hhhhh........ Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------- Transcript
                 1o7i A   1 MEEKVGNLKPNMESVNVTVRVLEASEARQIQTKNGVRTISEAIVGDETGRVKLTLWGKHAGSIKEGQVVKIENAWTTAFKGQVQLNAGSKTKIAEASEDGFPESSQIPENTPTAP 115
                                    10        20        30        40        50        60        70        80        90       100       110     


Chain B from PDB  Type:PROTEIN  Length:114
 aligned with SSB_SULSO | Q97W73 from UniProtKB/Swiss-Prot  Length:148

    Alignment length:114
                                    10        20        30        40        50        60        70        80        90       100       110    
            SSB_SULSO     1 MEEKVGNLKPNMESVNVTVRVLEASEARQIQTKNGVRTISEAIVGDETGRVKLTLWGKHAGSIKEGQVVKIENAWTTAFKGQVQLNAGSKTKIAEASEDGFPESSQIPENTPTA 114
               SCOP domains d1o7ib_ B: Archaeal ssDNA-binding protein                                                                          SCOP domains
               CATH domains 1o7iB00 B:1-114 Nucleic acid-binding proteins                                                                      CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ...hhhhh......eeeeeeeeee...eeee....eeeeeeeeeee..eeeeeeee.hhh.......eeeeeeeeeeee..eeeeee...............hhhhh....... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------ Transcript
                 1o7i B   1 MEEKVGNLKPNMESVNVTVRVLEASEARQIQTKNGVRTISEAIVGDETGRVKLTLWGKHAGSIKEGQVVKIENAWTTAFKGQVQLNAGSKTKIAEASEDGFPESSQIPENTPTA 114
                                    10        20        30        40        50        60        70        80        90       100       110
   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 Unit
(-)
Class: All beta proteins (24004)

(-) CATH Domains  (1, 2)

Asymmetric Unit
(-)
Class: Mainly Beta (13760)

(-) Pfam Domains  (0, 0)

(no "Pfam Domain" information available for 1O7I)

(-) Gene Ontology  (2, 2)

Asymmetric Unit(hide GO term definitions)
Chain A,B   (SSB_SULSO | Q97W73)
molecular function
    GO:0003677    DNA binding    Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
    GO:0003676    nucleic acid binding    Interacting selectively and non-covalently with any nucleic acid.

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 Related Entries

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UniProtKB/Swiss-Prot
        SSB_SULSO | Q97W73: 2mna

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