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UniProtKB - P94544 (POLX_BACSU)

Entry version 129 (23 Feb 2022)
Sequence version 1 (01 May 1997)
Previous versions | rss
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Protein

DNA polymerase/3'-5' exonuclease PolX

Gene

polX

Organism
Bacillus subtilis (strain 168)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Strictly DNA-template-directed DNA polymerase, preferentially acting on DNA structures containing gaps from one to a few nucleotides and bearing a phosphate group at the 5' end of the downstream DNA. The fact that PolX is able to conduct filling of a single-nucleotide gap, allowing further sealing of the resulting nick by a DNA ligase, points to a putative role in base excision repair (BER) during the B.subtilis life cycle. Moreover, also possesses a 3'-5' exonuclease activity able to edit unpaired 3'-termini in a gapped DNA substrate and likely involved in resecting unannealed 3'-termini during DNA repair. The same PolX molecule could perform the subsequent gap-filling step. Does not display 5'-deoxyribose 5'-phosphate (dRP) lyase activity, as predicted by the lack of the lysine and tyrosine residues responsible for the dRP lyase activity in some other PolX members.

2 Publications

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

  • Exonucleolytic cleavage in the 3'- to 5'-direction to yield nucleoside 5'-phosphates. EC:3.1.11.1

<p>This subsection of the 'Function' section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

Protein has several cofactor binding sites:

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes regulatory mechanisms for enzymes, transporters or microbial transcription factors, and reports the components which regulate (by activation or inhibition) the reaction.<p><a href='/help/activity_regulation' target='_top'>More...</a></p>Activity regulationi

The polymerization activity is inhibited in the presence of 2'-3'-dideoxynucleoside 5'-triphosphate (ddNTP).1 Publication

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the 'Description' field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi193Divalent metal cation 1Curated1
Metal bindingi193Divalent metal cation 2Curated1
Metal bindingi195Divalent metal cation 1Curated1
Metal bindingi195Divalent metal cation 2Curated1
Metal bindingi240Divalent metal cation 2By similarity1
Metal bindingi339Manganese 1Curated1
Metal bindingi341Manganese 1Curated1
Metal bindingi371Manganese 2By similarity1
Metal bindingi410Manganese 1By similarity1
Metal bindingi410Manganese 3By similarity1
Metal bindingi437Manganese 3By similarity1
Metal bindingi465Manganese 3By similarity1
Metal bindingi526Manganese 1By similarity1
Metal bindingi528Manganese 2By similarity1

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

Complete GO annotation on QuickGO ...

GO - Biological processi

Complete GO annotation on QuickGO ...

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionDNA-binding, DNA-directed DNA polymerase, Hydrolase, Multifunctional enzyme, Nucleotidyltransferase, Transferase
Biological processDNA damage, DNA repair, DNA replication, DNA synthesis
LigandMagnesium, Manganese, Metal-binding

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...BioCyci		BSUB:BSU28590-MONOMER

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
DNA polymerase/3'-5' exonuclease PolX
Including the following 2 domains:
DNA polymerase type-X (EC:2.7.7.7)
3'-5' exodeoxyribonuclease (EC:3.1.11.1)
Short name:
3'-5' exonuclease
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:polX
Synonyms:yshC
Ordered Locus Names:BSU28590
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiBacillus subtilis (strain 168)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri224308 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiBacteria › Firmicutes › Bacilli › Bacillales › Bacillaceae › Bacillus ›
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000001570 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

Mutagenesis

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/manual/pathology%5Fand%5Fbiotech%5Fsection">'Pathology and Biotech'</a> section describes the effect of the experimental mutation of one or more amino acid(s) on the biological properties of the protein.<p><a href='/help/mutagen' target='_top'>More...</a></p>Mutagenesisi193 – 195DLD → ALA: Abolishes DNA polymerase activity. 1 Publication3
Mutagenesisi339 – 341HMH → AMA: Abolishes 3'-5' exonuclease activity. Still possesses DNA polymerase activity. 1 Publication3

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00003607711 – 570DNA polymerase/3'-5' exonuclease PolXAdd BLAST570

Proteomic databases

PaxDb, a database of protein abundance averages across all three domains of life

More...PaxDbi		P94544

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Monomer.

1 Publication

Protein-protein interaction databases

STRING: functional protein association networks

More...STRINGi		224308.BSU28590

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...SMRi		P94544

Database of comparative protein structure models

More...ModBasei		Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni1 – 315DNA polymerase type-XAdd BLAST315
Regioni333 – 5703'-5' exonucleaseAdd BLAST238

<p>This subsection of the 'Family and domains' section provides general information on the biological role of a domain. The term 'domain' is intended here in its wide acceptation, it may be a structural domain, a transmembrane region or a functional domain. Several domains are described in this subsection.<p><a href='/help/domain_cc' target='_top'>More...</a></p>Domaini

The 3'-5' exonuclease activity resides in the C-terminal PHP domain.1 Publication

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

In the N-terminal section; belongs to the DNA polymerase type-X family.Curated
In the C-terminal section; belongs to the PHP family.Curated

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		COG1387, Bacteria
COG1796, Bacteria

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		P94544

Identification of Orthologs from Complete Genome Data

More...OMAi		IIAHPTG

Database for complete collections of gene phylogenies

More...PhylomeDBi		P94544

Family and domain databases

Conserved Domains Database

More...CDDi		cd00141, NT_POLXc, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...Gene3Di		1.10.150.110, 1 hit
3.30.210.10, 1 hit
3.30.460.10, 1 hit

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR002054, DNA-dir_DNA_pol_X
IPR010996, DNA_pol_b-like_N
IPR027421, DNA_pol_lamdba_lyase_dom_sf
IPR037160, DNA_Pol_thumb_sf
IPR003583, Hlx-hairpin-Hlx_DNA-bd_motif
IPR043519, NT_sf
IPR004013, PHP_dom
IPR003141, Pol/His_phosphatase_N
IPR016195, Pol/histidinol_Pase-like
IPR029398, PolB_thumb
IPR022311, UCP005047_YshC

Pfam protein domain database

More...Pfami		View protein in Pfam
PF14791, DNA_pol_B_thumb, 1 hit
PF14716, HHH_8, 1 hit
PF02811, PHP, 1 hit

PIRSF; a whole-protein classification database

More...PIRSFi		PIRSF005047, UCP005047_YshC, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...SMARTi		View protein in SMART
SM00278, HhH1, 3 hits
SM00481, POLIIIAc, 1 hit
SM00483, POLXc, 1 hit

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF47802, SSF47802, 1 hit
SSF81301, SSF81301, 1 hit
SSF89550, SSF89550, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

P94544-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MHKKDIIRLL ETIAVYMELK GDNPFKVSAF RKAAAALEQD DRSLSEMDDM 
        60         70         80         90        100
MSLSGIGKGT YSVIKEYIDE GKSSTLESLQ KEVPEGLVPL LKLPGLGGKK 
       110        120        130        140        150
IAKLYKELGV HDAESLKEAC EQQKVQGLAG FGKKSEEKIL QALGEAGKQP 
       160        170        180        190        200
ERFPIGYALR IAREIEEHLS QFTHIIKFSR AGSLRRARET VKDLDYIIAT 
       210        220        230        240        250
DHPAEVREQL LELPNIKSVI ASGDTKVSVI LSFEYETSVD FRLVTEEQFP 
       260        270        280        290        300
TTLHHFTGSK DHNIKMRQIA KERGERISEY GVETVETGEI KTFPSEREFY 
       310        320        330        340        350
AHFGLPLIPP EIRESGQEVE TYSDSIELIE LGQIKGDLHM HSTWSDGAFS 
       360        370        380        390        400
IREMAEACIK KGYQYMAITD HSQYLKVANG LTAERLKQQA KEIDALNAEF 
       410        420        430        440        450
ENFRILKGVE MDILPDGTLD YDDDVLAEMD IVIASIHSSF NQPEHVIMKR 
       460        470        480        490        500
LETALTNKHV DIIAHPTGRL IGRRAGYEID IDQLIELARK TNTALELNAN 
       510        520        530        540        550
PARLDLRTEH LMKANEQGVT LVINTDAHNI EMLDDMKTGV TAARKGWTET 
       560        570
KNVLNARSLK DVEAFLKRND
Length:570
Mass (Da):64,120
Last modified:May 1, 1997 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i06AEA028BFA3D3F5
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...EMBLi

GenBank nucleotide sequence database

More...GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...DDBJi
Links Updated
Z75208 Genomic DNA Translation: CAA99568.1
AL009126 Genomic DNA Translation: CAB14819.1

Protein sequence database of the Protein Information Resource

More...PIRi		C69985

NCBI Reference Sequences

More...RefSeqi		NP_390737.1, NC_000964.3
WP_003229538.1, NZ_JNCM01000036.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...EnsemblBacteriai		CAB14819; CAB14819; BSU_28590

Database of genes from NCBI RefSeq genomes

More...GeneIDi		937426

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		bsu:BSU28590

Pathosystems Resource Integration Center (PATRIC)

More...PATRICi		fig|224308.179.peg.3106

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
Z75208 Genomic DNA Translation: CAA99568.1
AL009126 Genomic DNA Translation: CAB14819.1
PIRiC69985
RefSeqiNP_390737.1, NC_000964.3
WP_003229538.1, NZ_JNCM01000036.1

3D structure databases

SMRiP94544
ModBaseiSearch...

Protein-protein interaction databases

STRINGi224308.BSU28590

Proteomic databases

PaxDbiP94544

Protocols and materials databases

The DNASU plasmid repository

More...DNASUi		937426

Genome annotation databases

EnsemblBacteriaiCAB14819; CAB14819; BSU_28590
GeneIDi937426
KEGGibsu:BSU28590
PATRICifig|224308.179.peg.3106

Phylogenomic databases

eggNOGiCOG1387, Bacteria
COG1796, Bacteria
InParanoidiP94544
OMAiIIAHPTG
PhylomeDBiP94544

Enzyme and pathway databases

BioCyciBSUB:BSU28590-MONOMER

Family and domain databases

CDDicd00141, NT_POLXc, 1 hit
Gene3Di1.10.150.110, 1 hit
3.30.210.10, 1 hit
3.30.460.10, 1 hit
InterProiView protein in InterPro
IPR002054, DNA-dir_DNA_pol_X
IPR010996, DNA_pol_b-like_N
IPR027421, DNA_pol_lamdba_lyase_dom_sf
IPR037160, DNA_Pol_thumb_sf
IPR003583, Hlx-hairpin-Hlx_DNA-bd_motif
IPR043519, NT_sf
IPR004013, PHP_dom
IPR003141, Pol/His_phosphatase_N
IPR016195, Pol/histidinol_Pase-like
IPR029398, PolB_thumb
IPR022311, UCP005047_YshC
PfamiView protein in Pfam
PF14791, DNA_pol_B_thumb, 1 hit
PF14716, HHH_8, 1 hit
PF02811, PHP, 1 hit
PIRSFiPIRSF005047, UCP005047_YshC, 1 hit
SMARTiView protein in SMART
SM00278, HhH1, 3 hits
SM00481, POLIIIAc, 1 hit
SM00483, POLXc, 1 hit
SUPFAMiSSF47802, SSF47802, 1 hit
SSF81301, SSF81301, 1 hit
SSF89550, SSF89550, 1 hit

MobiDB: a database of protein disorder and mobility annotations

More...MobiDBi		Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiPOLX_BACSU
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P94544
Secondary accession number(s): Q795X4
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: January 20, 2009
Last sequence update: May 1, 1997
Last modified: February 23, 2022
This is version 129 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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