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(-) Description

Title :  STRUCTURE OF THE E. COLI SSB-DNA POLYMERASE III INTERFACE
 
Authors :  A. H. Marceau, J. L. Keck
Date :  15 Jul 11  (Deposition) - 21 Sep 11  (Release) - 30 Nov 11  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.85
Chains :  Asym./Biol. Unit :  A,B,C
Keywords :  Dna Replication, Chi Binds To Ssb And Psi, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  A. H. Marceau, S. Bahng, S. C. Massoni, N. P. George, S. J. Sandler, K. J. Marians, J. L. Keck
Structure Of The Ssb-Dna Polymerase Iii Interface And Its Role In Dna Replication.
Embo J. V. 30 4236 2011
PubMed-ID: 21857649  |  Reference-DOI: 10.1038/EMBOJ.2011.305

(-) Compounds

Molecule 1 - DNA POLYMERASE III SUBUNIT CHI
    ChainsA
    EC Number2.7.7.7
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System Taxid562
    GeneB4259, HOLC, JW4216
    Organism ScientificESCHERICHIA COLI
    Organism Taxid83333
    StrainK12
 
Molecule 2 - DNA POLYMERASE III SUBUNIT PSI
    ChainsB
    EC Number2.7.7.7
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System Taxid562
    GeneB4372, HOLD, JW4334
    Organism ScientificESCHERICHIA COLI
    Organism Taxid83333
    StrainK12
 
Molecule 3 - SSB PEPTIDE
    ChainsC
    EngineeredYES
    Organism ScientificESCHERICHIA COLI
    Organism Taxid83333
    SyntheticYES

 Structural Features

(-) Chains, Units

  123
Asymmetric/Biological Unit ABC

Summary Information (see also Sequences/Alignments below)

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

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

(-) Sites  (0, 0)

(no "Site" information available for 3SXU)

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (1, 1)

Asymmetric/Biological Unit
No.Residues
1Arg A:59 -Pro A:60

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

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

(-) Exons   (0, 0)

(no "Exon" information available for 3SXU)

(-) 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:146
 aligned with HOLC_ECOLI | P28905 from UniProtKB/Swiss-Prot  Length:147

    Alignment length:146
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141      
           HOLC_ECOLI     2 KNATFYLLDNDTTVDGLSAVEQLVCEIAAERWRSGKRVLIACEDEKQAYRLDEALWARPAESFVPHNLAGEGPRGGAPVEIAWPQKRSSSRRDILISLRTSFADFATAFTEVVDFVPYEDSLKQLARERYKAYRVAGFNLNTATWK 147
               SCOP domains d3sxua_ A: automated matches                                                                                                                       SCOP domains
               CATH domains -------------------------------------------------------------------------------------------------------------------------------------------------- CATH domains
               Pfam domains -------------------------------------------------------------------------------------------------------------------------------------------------- Pfam domains
         Sec.struct. author .eeeeee..........hhhhhhhhhhhhhhhhh...eeee..hhhhhhhhhhhh..........eee..........eeee...........eeee.....hhhhhhh.eeeeee..hhhhhhhhhhhhhhhhhh..eeeee... Sec.struct. author
                 SAPs(SNPs) -------------------------------------------------------------------------------------------------------------------------------------------------- SAPs(SNPs)
                    PROSITE -------------------------------------------------------------------------------------------------------------------------------------------------- PROSITE
                 Transcript -------------------------------------------------------------------------------------------------------------------------------------------------- Transcript
                 3sxu A   2 KNATFYLLDNDTTVDGLSAVEQLVCEIAAERWRSGKRVLIACEDEKQAYRLDEALWARPAESFVPHNLAGEGPRGGAPVEIAWPQKRSSSRRDILISLRTSFADFATAFTEVVDFVPYEDSLKQLARERYKAYRVAGFNLNTATWK 147
                                    11        21        31        41        51        61        71        81        91       101       111       121       131       141      

Chain B from PDB  Type:PROTEIN  Length:102
 aligned with HOLD_ECOLI | P28632 from UniProtKB/Swiss-Prot  Length:137

    Alignment length:102
                                    42        52        62        72        82        92       102       112       122       132  
           HOLD_ECOLI    33 IPAHVRLVMVANDLPALTDPLVSDVLRALTVSPDQVLQLTPEKIAMLPQGSHCNSWRLGTDEPLSLEGAQVASPALTDLRANPTARAALWQQICTYEHDFFP 134
               SCOP domains ------------------------------------------------------------------------------------------------------ SCOP domains
               CATH domains ------------------------------------------------------------------------------------------------------ CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author ......eeee........hhhhhhhhhhhh.hhh.eeeehhhhhh.........eeee...........eeee.hhhhhhhhhhhhhhhhhhhhhhhhhhh. Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------ Transcript
                 3sxu B  33 IPAHVRLVMVANDLPALTDPLVSDVLRALTVSPDQVLQLTPEKIAMLPQGSHCNSWRLGTDEPLSLEGAQVASPALTDLRANPTARAALWQQICTYEHDFFP 134
                                    42        52        62        72        82        92       102       112       122       132  

Chain C from PDB  Type:PROTEIN  Length:4
 aligned with SSB_ECOLI | P0AGE0 from UniProtKB/Swiss-Prot  Length:178

    Alignment length:4
            SSB_ECOLI   175 DIPF 178
               SCOP domains ---- SCOP domains
               CATH domains ---- CATH domains
               Pfam domains ---- Pfam domains
         Sec.struct. author .... Sec.struct. author
                 SAPs(SNPs) ---- SAPs(SNPs)
                    PROSITE ---- PROSITE
                 Transcript ---- Transcript
                 3sxu C 174 DIPF 177

   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/Biological Unit

(-) CATH Domains  (0, 0)

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

(-) Pfam Domains  (0, 0)

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

(-) Gene Ontology  (22, 31)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A   (HOLC_ECOLI | P28905)
molecular function
    GO:0003677    DNA binding    Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
    GO:0003887    DNA-directed DNA polymerase activity    Catalysis of the reaction: deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1); the synthesis of DNA from deoxyribonucleotide triphosphates in the presence of a DNA template and a 3'hydroxyl group.
    GO:0016779    nucleotidyltransferase activity    Catalysis of the transfer of a nucleotidyl group to a reactant.
    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:0016740    transferase activity    Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
biological process
    GO:0071897    DNA biosynthetic process    The cellular DNA metabolic process resulting in the formation of DNA, deoxyribonucleic acid, one of the two main types of nucleic acid, consisting of a long unbranched macromolecule formed from one or two strands of linked deoxyribonucleotides, the 3'-phosphate group of each constituent deoxyribonucleotide being joined in 3',5'-phosphodiester linkage to the 5'-hydroxyl group of the deoxyribose moiety of the next one.
    GO:0006260    DNA replication    The cellular metabolic process in which a cell duplicates one or more molecules of DNA. DNA replication begins when specific sequences, known as origins of replication, are recognized and bound by initiation proteins, and ends when the original DNA molecule has been completely duplicated and the copies topologically separated. The unit of replication usually corresponds to the genome of the cell, an organelle, or a virus. The template for replication can either be an existing DNA molecule or RNA.
    GO:0032298    positive regulation of DNA-dependent DNA replication initiation    Any process that activates or increases the frequency, rate or extent of initiation of DNA-dependent DNA replication.
cellular component
    GO:0043847    DNA polymerase III, clamp loader chi/psi subcomplex    A dimer composed of the chi and psi subunits which is a subassembly of the DNA polymerase III clamp loader complex and serves as a bridge between the DnaX complex and the single-stranded DNA-binding protein (SSB).

Chain B   (HOLD_ECOLI | P28632)
molecular function
    GO:0008408    3'-5' exonuclease activity    Catalysis of the hydrolysis of ester linkages within nucleic acids by removing nucleotide residues from the 3' end.
    GO:0003887    DNA-directed DNA polymerase activity    Catalysis of the reaction: deoxynucleoside triphosphate + DNA(n) = diphosphate + DNA(n+1); the synthesis of DNA from deoxyribonucleotide triphosphates in the presence of a DNA template and a 3'hydroxyl group.
    GO:0016779    nucleotidyltransferase activity    Catalysis of the transfer of a nucleotidyl group to a reactant.
    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:0016740    transferase activity    Catalysis of the transfer of a group, e.g. a methyl group, glycosyl group, acyl group, phosphorus-containing, or other groups, from one compound (generally regarded as the donor) to another compound (generally regarded as the acceptor). Transferase is the systematic name for any enzyme of EC class 2.
biological process
    GO:0071897    DNA biosynthetic process    The cellular DNA metabolic process resulting in the formation of DNA, deoxyribonucleic acid, one of the two main types of nucleic acid, consisting of a long unbranched macromolecule formed from one or two strands of linked deoxyribonucleotides, the 3'-phosphate group of each constituent deoxyribonucleotide being joined in 3',5'-phosphodiester linkage to the 5'-hydroxyl group of the deoxyribose moiety of the next one.
    GO:0006260    DNA replication    The cellular metabolic process in which a cell duplicates one or more molecules of DNA. DNA replication begins when specific sequences, known as origins of replication, are recognized and bound by initiation proteins, and ends when the original DNA molecule has been completely duplicated and the copies topologically separated. The unit of replication usually corresponds to the genome of the cell, an organelle, or a virus. The template for replication can either be an existing DNA molecule or RNA.
    GO:0090305    nucleic acid phosphodiester bond hydrolysis    The nucleic acid metabolic process in which the phosphodiester bonds between nucleotides are cleaved by hydrolysis.

Chain C   (SSB_ECOLI | P0AGE0)
molecular function
    GO:0003677    DNA binding    Any molecular function by which a gene product interacts selectively and non-covalently with DNA (deoxyribonucleic acid).
    GO:0008047    enzyme activator activity    Binds to and increases the activity of an enzyme.
    GO:0042802    identical protein binding    Interacting selectively and non-covalently with an identical protein or proteins.
    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:0003697    single-stranded DNA binding    Interacting selectively and non-covalently with single-stranded DNA.
biological process
    GO:0006310    DNA recombination    Any process in which a new genotype is formed by reassortment of genes resulting in gene combinations different from those that were present in the parents. In eukaryotes genetic recombination can occur by chromosome assortment, intrachromosomal recombination, or nonreciprocal interchromosomal recombination. Intrachromosomal recombination occurs by crossing over. In bacteria it may occur by genetic transformation, conjugation, transduction, or F-duction.
    GO:0006281    DNA repair    The process of restoring DNA after damage. Genomes are subject to damage by chemical and physical agents in the environment (e.g. UV and ionizing radiations, chemical mutagens, fungal and bacterial toxins, etc.) and by free radicals or alkylating agents endogenously generated in metabolism. DNA is also damaged because of errors during its replication. A variety of different DNA repair pathways have been reported that include direct reversal, base excision repair, nucleotide excision repair, photoreactivation, bypass, double-strand break repair pathway, and mismatch repair pathway.
    GO:0006260    DNA replication    The cellular metabolic process in which a cell duplicates one or more molecules of DNA. DNA replication begins when specific sequences, known as origins of replication, are recognized and bound by initiation proteins, and ends when the original DNA molecule has been completely duplicated and the copies topologically separated. The unit of replication usually corresponds to the genome of the cell, an organelle, or a virus. The template for replication can either be an existing DNA molecule or RNA.
    GO:0009432    SOS response    An error-prone process for repairing damaged microbial DNA.
    GO:0006974    cellular response to DNA damage stimulus    Any process that results in a change in state or activity of a cell (in terms of movement, secretion, enzyme production, gene expression, etc.) as a result of a stimulus indicating damage to its DNA from environmental insults or errors during metabolism.
    GO:0006298    mismatch repair    A system for the correction of errors in which an incorrect base, which cannot form hydrogen bonds with the corresponding base in the parent strand, is incorporated into the daughter strand. The mismatch repair system promotes genomic fidelity by repairing base-base mismatches, insertion-deletion loops and heterologies generated during DNA replication and recombination.
    GO:0043085    positive regulation of catalytic activity    Any process that activates or increases the activity of an enzyme.
    GO:0000725    recombinational repair    A DNA repair process that involves the exchange, reciprocal or nonreciprocal, of genetic material between the broken DNA molecule and a homologous region of DNA.
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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    Arg A:59 - Pro A:60   [ RasMol ]  
 

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 Related Entries

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

UniProtKB/Swiss-Prot
        HOLC_ECOLI | P289051em8
        HOLD_ECOLI | P286321em8 3gli
        SSB_ECOLI | P0AGE01eqq 1eyg 1kaw 1qvc 1sru 3c94 3uf7 4mz9 4z0u

(-) Related Entries Specified in the PDB File

(no "Related Entries Specified in the PDB File" available for 3SXU)