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(-) Description

Title :  E. COLI DNA POLYMERASE BETA SUBUNIT
 
Authors :  A. J. Oakley, P. Prosselkov, G. Wijffels, J. L. Beck, M. C. J. Wilce, N. E. Dixon
Date :  04 Sep 02  (Deposition) - 04 Sep 03  (Release) - 24 Feb 09  (Revision)
Method :  X-RAY DIFFRACTION
Resolution :  1.85
Chains :  Asym./Biol. Unit :  A,B
Keywords :  Dna Polymerase Beta Subunit, E. Coli, Dna Replication, Sliding Clamp, Processivity Factor, Transferase (Keyword Search: [Gene Ontology, PubMed, Web (Google))
 
Reference :  A. J. Oakley, P. Prosselkov, G. Wijffels, J. L. Beck, M. C. Wilce, N. E. Dixon
Flexibility Revealed By The 1. 85 A Crystal Structure Of The Beta Sliding-Clamp Subunit Of Escherichia Coli Dna Polymerase Iii.
Acta Crystallogr. , Sect. D V. 59 1192 2003
PubMed-ID: 12832762  |  Reference-DOI: 10.1107/S0907444903009958
(for further references see the PDB file header)

(-) Compounds

Molecule 1 - DNA POLYMERASE III, BETA CHAIN
    ChainsA, B
    EC Number2.7.7.7
    EngineeredYES
    Expression SystemESCHERICHIA COLI
    Expression System PlasmidPND261
    Expression System StrainAN1459
    Expression System Taxid562
    Expression System Vector TypePLASMID
    GeneDNAN
    Organism ScientificESCHERICHIA COLI
    Organism Taxid562

 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 1MMI)

(-) Sites  (0, 0)

(no "Site" information available for 1MMI)

(-) SS Bonds  (0, 0)

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

(-) Cis Peptide Bonds  (0, 0)

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

 Sequence-Structure Mapping

(-) SAPs(SNPs)/Variants  (0, 0)

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

(-) PROSITE Motifs  (0, 0)

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

(-) Exons   (0, 0)

(no "Exon" information available for 1MMI)

(-) 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:366
 aligned with DPO3B_ECOLI | P0A988 from UniProtKB/Swiss-Prot  Length:366

    Alignment length:366
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360      
          DPO3B_ECOLI     1 MKFTVEREHLLKPLQQVSGPLGGRPTLPILGNLLLQVADGTLSLTGTDLEMEMVARVALVQPHEPGATTVPARKFFDICRGLPEGAEIAVQLEGERMLVRSGRSRFSLSTLPAADFPNLDDWQSEVEFTLPQATMKRLIEATQFSMAHQDVRYYLNGMLFETEGEELRTVATDGHRLAVCSMPIGQSLPSHSVIVPRKGVIELMRMLDGGDNPLRVQIGSNNIRAHVGDFIFTSKLVDGRFPDYRRVLPKNPDKHLEAGCDLLKQAFARAAILSNEKFRGVRLYVSENQLKITANNPEQEEAEEILDVTYSGAEMEIGFNVSYVLDVLNALKCENVRMMLTDSVSSVQIEDAASQSAAYVVMPMRL 366
               SCOP domains d1mmia1 A:1-122 DNA polymerase III, beta subunit                                                                          d1mmia2 A:123-244 DNA polymerase III, beta subunit                                                                        d1mmia3 A:245-366 DNA polymerase III, beta subunit                                                                         SCOP domains
               CATH domains 1mmiA01 A:1-123 DNA Polymerase III, subunit A, domain 2                                                                    1mmiA02 A:124-247 DNA Polymerase III, subunit A, domain 2                                                                   1mmiA03 A:248-366 DNA Polymerase III, subunit A, domain 2                                                               CATH domains
               Pfam domains ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Pfam domains
         Sec.struct. author .eeeeehhhhhhhhhhhh........hhhh.eeeeeee..eeeeeee...eeeeeeee.......eeeeeehhhhhhhhhhh....eeeeeee..eeeeee..eeeeee..hhhhh.........eeeeeehhhhhhhhhhhhhhh.....hhhh.eeeeeeeeeeeeeeee....eeeeeeeeeeeeeeeeeeeehhhhhhhhhhh.....eeeeee...eeeeee..eeeeee.......hhhhh......eeeeeehhhhhhhhhhhhh.......eeeeeee..eeeeeee.....eeeeeee.......eeeeeehhhhhhhhhhhh..eeeeee......eeeee..eeeeeeee..... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1mmi A   1 MKFTVEREHLLKPLQQVSGPLGGRPTLPILGNLLLQVADGTLSLTGTDLEMEMVARVALVQPHEPGATTVPARKFFDICRGLPEGAEIAVQLEGERMLVRSGRSRFSLSTLPAADFPNLDDWQSEVEFTLPQATMKRLIEATQFSMAHQDVRYYLNGMLFETEGEELRTVATDGHRLAVCSMPIGQSLPSHSVIVPRKGVIELMRMLDGGDNPLRVQIGSNNIRAHVGDFIFTSKLVDGRFPDYRRVLPKNPDKHLEAGCDLLKQAFARAAILSNEKFRGVRLYVSENQLKITANNPEQEEAEEILDVTYSGAEMEIGFNVSYVLDVLNALKCENVRMMLTDSVSSVQIEDAASQSAAYVVMPMRL 366
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360      

Chain B from PDB  Type:PROTEIN  Length:366
 aligned with DPO3B_ECOLI | P0A988 from UniProtKB/Swiss-Prot  Length:366

    Alignment length:366
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360      
          DPO3B_ECOLI     1 MKFTVEREHLLKPLQQVSGPLGGRPTLPILGNLLLQVADGTLSLTGTDLEMEMVARVALVQPHEPGATTVPARKFFDICRGLPEGAEIAVQLEGERMLVRSGRSRFSLSTLPAADFPNLDDWQSEVEFTLPQATMKRLIEATQFSMAHQDVRYYLNGMLFETEGEELRTVATDGHRLAVCSMPIGQSLPSHSVIVPRKGVIELMRMLDGGDNPLRVQIGSNNIRAHVGDFIFTSKLVDGRFPDYRRVLPKNPDKHLEAGCDLLKQAFARAAILSNEKFRGVRLYVSENQLKITANNPEQEEAEEILDVTYSGAEMEIGFNVSYVLDVLNALKCENVRMMLTDSVSSVQIEDAASQSAAYVVMPMRL 366
               SCOP domains d1mmib1 B:1-122 DNA polymerase III, beta subunit                                                                          d1mmib2 B:123-244 DNA polymerase III, beta subunit                                                                        d1mmib3 B:245-366 DNA polymerase III, beta subunit                                                                         SCOP domains
               CATH domains 1mmiB01 B:1-123 DNA Polymerase III, subunit A, domain 2                                                                    1mmiB02 B:124-247 DNA Polymerase III, subunit A, domain 2                                                                   1mmiB03 B:248-366 DNA Polymerase III, subunit A, domain 2                                                               CATH domains
           Pfam domains (1) DNA_pol3_beta-1mmiB01 B:1-120                                                                                           --------DNA_pol3_beta_2-1mmiB03 B:129-243                                                                                  -DNA_pol3_beta_3-1mmiB05 B:245-365                                                                                        - Pfam domains (1)
           Pfam domains (2) DNA_pol3_beta-1mmiB02 B:1-120                                                                                           --------DNA_pol3_beta_2-1mmiB04 B:129-243                                                                                  -DNA_pol3_beta_3-1mmiB06 B:245-365                                                                                        - Pfam domains (2)
         Sec.struct. author .eeeeehhhhhhhhhhhhh.......hhhh.eeeeeee..eeeeeee...eeeeeeee.......eeeeeehhhhhhhhhhh....eeeeeee..eeeeee..eeeeee..hhhhh.........eeeeehhhhhhhhhhhhhhhh.....hhhhhheeeeee..eeeeeee...eeeeeeee.......eeeeehhhhhhhhhhh.......eeeee...eeeeee..eeeeee.......hhhhhh.....eeeeeehhhhhhhhhhhhh.......eeeeeee..eeeeeee.....eeeeeee.......eeeeeehhhhhhhhhhh...eeeeee......eeeee..eeeeeeee..... Sec.struct. author
                 SAPs(SNPs) ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ SAPs(SNPs)
                    PROSITE ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ PROSITE
                 Transcript ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------ Transcript
                 1mmi B   1 MKFTVEREHLLKPLQQVSGPLGGRPTLPILGNLLLQVADGTLSLTGTDLEMEMVARVALVQPHEPGATTVPARKFFDICRGLPEGAEIAVQLEGERMLVRSGRSRFSLSTLPAADFPNLDDWQSEVEFTLPQATMKRLIEATQFSMAHQDVRYYLNGMLFETEGEELRTVATDGHRLAVCSMPIGQSLPSHSVIVPRKGVIELMRMLDGGDNPLRVQIGSNNIRAHVGDFIFTSKLVDGRFPDYRRVLPKNPDKHLEAGCDLLKQAFARAAILSNEKFRGVRLYVSENQLKITANNPEQEEAEEILDVTYSGAEMEIGFNVSYVLDVLNALKCENVRMMLTDSVSSVQIEDAASQSAAYVVMPMRL 366
                                    10        20        30        40        50        60        70        80        90       100       110       120       130       140       150       160       170       180       190       200       210       220       230       240       250       260       270       280       290       300       310       320       330       340       350       360      

   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, 6)

Asymmetric/Biological Unit

(-) CATH Domains  (1, 6)

Asymmetric/Biological Unit
(-)
Class: Alpha Beta (26913)

(-) Pfam Domains  (3, 6)

Asymmetric/Biological Unit

(-) Gene Ontology  (15, 15)

Asymmetric/Biological Unit(hide GO term definitions)
Chain A,B   (DPO3B_ECOLI | P0A988)
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: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:0042802    identical protein binding    Interacting selectively and non-covalently with an identical protein or proteins.
    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:0006271    DNA strand elongation involved in DNA replication    The process in which a DNA strand is synthesized from template DNA during replication by the action of polymerases, which add nucleotides to the 3' end of the nascent DNA strand.
    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:0090305    nucleic acid phosphodiester bond hydrolysis    The nucleic acid metabolic process in which the phosphodiester bonds between nucleotides are cleaved by hydrolysis.
cellular component
    GO:0009360    DNA polymerase III complex    The DNA polymerase III holoenzyme is a complex that contains 10 different types of subunits. These subunits are organized into 3 functionally essential sub-assemblies: the pol III core, the beta sliding clamp processivity factor and the clamp-loading complex. The pol III core carries out the polymerase and the 3'-5' exonuclease proofreading activities. The polymerase is tethered to the template via the sliding clamp processivity factor. The clamp-loading complex assembles the beta processivity factor onto the primer template and plays a central role in the organization and communication at the replication fork.
    GO:0005737    cytoplasm    All of the contents of a cell excluding the plasma membrane and nucleus, but including other subcellular structures.
    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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 Related Entries

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

UniProtKB/Swiss-Prot
        DPO3B_ECOLI | P0A9881jqj 1jql 1ok7 1unn 1wai 2pol 2xur 3bep 3d1e 3d1f 3d1g 3f1v 3pwe 3q4j 3q4k 3q4l 3qsb 4k3k 4k3l 4k3m 4k3o 4k3p 4k3q 4k3r 4k3s 4mjp 4mjq 4mjr 4n94 4n95 4n96 4n97 4n98 4n99 4n9a 5fku 5fkv 5fkw 5m1s

(-) Related Entries Specified in the PDB File

2pol THREE-DIMENSIONAL STRUCTURE OF THE BETA SUBUNIT OF ESCHERICHIA COLI DNA POLYMERASE III HOLOENZYME: A SLIDING DNA CLAMP