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UniProtKB - P04395 (3MG2_ECOLI)

Entry version 174 (02 Dec 2020)
Sequence version 1 (20 Mar 1987)
Previous versions | rss
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Protein

DNA-3-methyladenine glycosylase 2

Gene

alkA

Organism
Escherichia coli (strain K12)
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

Hydrolysis of the deoxyribose N-glycosidic bond to excise 3-methyladenine, 3-methylguanine, 7-methylguanine, O2-methylthymine, and O2-methylcytosine from the damaged DNA polymer formed by alkylation lesions.

<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

  • Hydrolysis of alkylated DNA, releasing 3-methyladenine, 3-methylguanine, 7-methylguanine and 7-methyladenine. EC:3.2.2.21

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections ('Function', 'PTM / Processing', 'Pathology and Biotech') according to its content.<p><a href='/help/site' target='_top'>More...</a></p>Sitei218Determinant for substrate specificity and/or activity1
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei238Proton acceptor1

<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 functionHydrolase
Biological processDNA damage, DNA repair

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...BioCyci		EcoCyc:EG11222-MONOMER
MetaCyc:EG11222-MONOMER

BRENDA Comprehensive Enzyme Information System

More...BRENDAi		3.2.2.21, 2026

<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-3-methyladenine glycosylase 2 (EC:3.2.2.21)
Alternative name(s):
3-methyladenine-DNA glycosylase II, inducible
Short name:
TAG II
DNA-3-methyladenine glycosidase II
DNA-3-methyladenine glycosylase II
<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:alkA
Synonyms:aidA
Ordered Locus Names:b2068, JW2053
<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>OrganismiEscherichia coli (strain K12)
<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 identifieri83333 [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 › Proteobacteria › Gammaproteobacteria › Enterobacterales › Enterobacteriaceae › Escherichia ›
<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
  • UP000000318 <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
  • UP000000625 Componenti: Chromosome

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

GO - Cellular componenti

Complete GO annotation on QuickGO ...

<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>Mutagenesisi124Q → A: Methylmethane sulfonate-resistant. 1 Publication1
Mutagenesisi218W → A: No catalytic activity, methylmethane sulfonate-sensitive. 1 Publication1
Mutagenesisi237D → N: More than 30% catalytic activity, methylmethane sulfonate-resistant. 1 Publication1
Mutagenesisi238D → N: No catalytic activity, methylmethane sulfonate-sensitive. 1 Publication1

<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_00001948781 – 282DNA-3-methyladenine glycosylase 2Add BLAST282

Proteomic databases

jPOST - Japan Proteome Standard Repository/Database

More...jPOSTi		P04395

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

More...PaxDbi		P04395

PRoteomics IDEntifications database

More...PRIDEi		P04395

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the 'Expression' section reports the experimentally proven effects of inducers and repressors (usually chemical compounds or environmental factors) on the level of protein (or mRNA) expression (up-regulation, down-regulation, constitutive expression).<p><a href='/help/induction' target='_top'>More...</a></p>Inductioni

Up-regulated by methylated Ada in response to the exposure to alkylating agents.

<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.

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction%5Fsection">Interaction</a>' section provides information about binary protein-protein interactions. The data presented in this section are a quality-filtered subset of binary interactions automatically derived from the <a href="https://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated at every <a href="http://www.uniprot.org/help/synchronization">UniProt release</a>.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...BioGRIDi		4259681, 55 interactors

Database of interacting proteins

More...DIPi		DIP-9084N

Protein interaction database and analysis system

More...IntActi		P04395, 19 interactors

STRING: functional protein association networks

More...STRINGi		511145.b2068

<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

Secondary structure

1282
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

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

More...SMRi		P04395

Database of comparative protein structure models

More...ModBasei		Search...

Protein Data Bank in Europe - Knowledge Base

More...PDBe-KBi		Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...EvolutionaryTracei		P04395

<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

<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

Belongs to the alkylbase DNA glycosidase AlkA family.Curated

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		COG0122, Bacteria

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...HOGENOMi		CLU_000445_72_3_6

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		P04395

Database for complete collections of gene phylogenies

More...PhylomeDBi		P04395

Family and domain databases

Conserved Domains Database

More...CDDi		cd00056, ENDO3c, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...Gene3Di		1.10.1670.10, 1 hit
3.30.310.20, 1 hit

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR010316, AlkA_N
IPR037046, AlkA_N_sf
IPR000035, Alkylbase_DNA_glycsylse_CS
IPR011257, DNA_glycosylase
IPR003265, HhH-GPD_domain
IPR023170, HTH_base_excis_C

Pfam protein domain database

More...Pfami		View protein in Pfam
PF06029, AlkA_N, 1 hit
PF00730, HhH-GPD, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...SMARTi		View protein in SMART
SM01009, AlkA_N, 1 hit
SM00478, ENDO3c, 1 hit

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF48150, SSF48150, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS00516, ALKYLBASE_DNA_GLYCOS, 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.

P04395-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MYTLNWQPPY DWSWMLGFLA ARAVSSVETV ADSYYARSLA VGEYRGVVTA 
        60         70         80         90        100
IPDIARHTLH INLSAGLEPV AAECLAKMSR LFDLQCNPQI VNGALGRLGA 
       110        120        130        140        150
ARPGLRLPGC VDAFEQGVRA ILGQLVSVAM AAKLTARVAQ LYGERLDDFP 
       160        170        180        190        200
EYICFPTPQR LAAADPQALK ALGMPLKRAE ALIHLANAAL EGTLPMTIPG 
       210        220        230        240        250
DVEQAMKTLQ TFPGIGRWTA NYFALRGWQA KDVFLPDDYL IKQRFPGMTP 
       260        270        280 
AQIRRYAERW KPWRSYALLH IWYTEGWQPD EA
Length:282
Mass (Da):31,393
Last modified:March 20, 1987 - 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:iB66BB5E23019899C
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
K02498 Genomic DNA Translation: AAA23430.1
U00096 Genomic DNA Translation: AAC75129.1
AP009048 Genomic DNA Translation: BAA15926.1
M13827 Genomic DNA No translation available.

Protein sequence database of the Protein Information Resource

More...PIRi		A00904, DGECMA

NCBI Reference Sequences

More...RefSeqi		NP_416572.1, NC_000913.3
WP_000288420.1, NZ_LN832404.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...EnsemblBacteriai		AAC75129; AAC75129; b2068
BAA15926; BAA15926; BAA15926

Database of genes from NCBI RefSeq genomes

More...GeneIDi		947371

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		ecj:JW2053
eco:b2068

Pathosystems Resource Integration Center (PATRIC)

More...PATRICi		fig|1411691.4.peg.183

<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
K02498 Genomic DNA Translation: AAA23430.1
U00096 Genomic DNA Translation: AAC75129.1
AP009048 Genomic DNA Translation: BAA15926.1
M13827 Genomic DNA No translation available.
PIRiA00904, DGECMA
RefSeqiNP_416572.1, NC_000913.3
WP_000288420.1, NZ_LN832404.1

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...PDBei

Protein Data Bank RCSB

More...RCSB PDBi

Protein Data Bank Japan

More...PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1DIZX-ray2.50A/B1-282[»]
1MPGX-ray1.80A/B1-282[»]
1PVSX-ray2.40A/B1-282[»]
3CVSX-ray2.40A/B/C/D1-282[»]
3CVTX-ray2.50A/B/C/D1-282[»]
3CW7X-ray2.30A/B/C/D1-282[»]
3CWAX-ray2.40A/B/C/D1-282[»]
3CWSX-ray2.30A/B/C/D1-282[»]
3CWTX-ray2.30A/B/C/D1-282[»]
3CWUX-ray2.80A/B/C/D1-282[»]
3D4VX-ray2.90A/B/C/D1-282[»]
3OGDX-ray2.80A2-282[»]
3OH6X-ray2.89A2-282[»]
3OH9X-ray2.80A2-282[»]
SMRiP04395
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

BioGRIDi4259681, 55 interactors
DIPiDIP-9084N
IntActiP04395, 19 interactors
STRINGi511145.b2068

Proteomic databases

jPOSTiP04395
PaxDbiP04395
PRIDEiP04395

Genome annotation databases

EnsemblBacteriaiAAC75129; AAC75129; b2068
BAA15926; BAA15926; BAA15926
GeneIDi947371
KEGGiecj:JW2053
eco:b2068
PATRICifig|1411691.4.peg.183

Organism-specific databases

EchoBASE - an integrated post-genomic database for E. coli

More...EchoBASEi		EB1204

Phylogenomic databases

eggNOGiCOG0122, Bacteria
HOGENOMiCLU_000445_72_3_6
InParanoidiP04395
PhylomeDBiP04395

Enzyme and pathway databases

BioCyciEcoCyc:EG11222-MONOMER
MetaCyc:EG11222-MONOMER
BRENDAi3.2.2.21, 2026

Miscellaneous databases

EvolutionaryTraceiP04395

Protein Ontology

More...PROi		PR:P04395

Family and domain databases

CDDicd00056, ENDO3c, 1 hit
Gene3Di1.10.1670.10, 1 hit
3.30.310.20, 1 hit
InterProiView protein in InterPro
IPR010316, AlkA_N
IPR037046, AlkA_N_sf
IPR000035, Alkylbase_DNA_glycsylse_CS
IPR011257, DNA_glycosylase
IPR003265, HhH-GPD_domain
IPR023170, HTH_base_excis_C
PfamiView protein in Pfam
PF06029, AlkA_N, 1 hit
PF00730, HhH-GPD, 1 hit
SMARTiView protein in SMART
SM01009, AlkA_N, 1 hit
SM00478, ENDO3c, 1 hit
SUPFAMiSSF48150, SSF48150, 1 hit
PROSITEiView protein in PROSITE
PS00516, ALKYLBASE_DNA_GLYCOS, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...ProtoNeti		Search...

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 namei3MG2_ECOLI
<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: P04395
<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: March 20, 1987
Last sequence update: March 20, 1987
Last modified: December 2, 2020
This is version 174 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

3D-structure, Direct protein sequencing, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families
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