Q3KH18 · DPO4_PSEPF
- ProteinDNA polymerase IV
- GenedinB
- StatusUniProtKB reviewed (Swiss-Prot)
- Amino acids353 (go to sequence)
- Protein existenceInferred from homology
- Annotation score3/5
Function
function
Poorly processive, error-prone DNA polymerase involved in untargeted mutagenesis. Copies undamaged DNA at stalled replication forks, which arise in vivo from mismatched or misaligned primer ends. These misaligned primers can be extended by PolIV. Exhibits no 3'-5' exonuclease (proofreading) activity. May be involved in translesional synthesis, in conjunction with the beta clamp from PolIII.
Catalytic activity
- DNA(n) + a 2'-deoxyribonucleoside 5'-triphosphate = DNA(n+1) + diphosphate
Cofactor
Note: Binds 2 magnesium ions per subunit.
Features
Showing features for binding site, site, active site.
GO annotations
Aspect | Term | |
---|---|---|
Cellular Component | cytosol | |
Molecular Function | damaged DNA binding | |
Molecular Function | DNA-directed DNA polymerase activity | |
Molecular Function | magnesium ion binding | |
Biological Process | DNA-templated DNA replication | |
Biological Process | error-prone translesion synthesis | |
Biological Process | SOS response |
Keywords
- Molecular function
- Biological process
- Ligand
Enzyme and pathway databases
Names & Taxonomy
Protein names
- Recommended nameDNA polymerase IV
- EC number
- Short namesPol IV
Gene names
Organism names
- Strain
- Taxonomic lineageBacteria > Pseudomonadota > Gammaproteobacteria > Pseudomonadales > Pseudomonadaceae > Pseudomonas
Accessions
- Primary accessionQ3KH18
Proteomes
Subcellular Location
PTM/Processing
Features
Showing features for chain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Chain | PRO_1000084917 | 1-353 | DNA polymerase IV | |||
Sequence: MTQRKIIHVDCDCFYAAIEMRDDPSLAGKPLAVGGSADRRGVIATCNYEARAYGVRSAMSSGHALKLCPDLTIVKPRMDAYREASKEIHTIFSDYTDLIEPLSLDEAYLDVSDSAHFGGSATRIAQDIRRRVSNQLHITVSAGVAPNKFLAKIASDWRKPNGLFVITPDQVEEFVSGLPVSKLHGVGKVTADKLGKLGINDCLQLREWDKLALVREFGSFGERLWSLARGIDERLVHNDSRRQSISVENTYDVDLPDLRSCLDKLPELLETLKTRMARIDSSYRPGKPFVKVKFHDFTQTTLEQAGAGRDLGSYQLMLTQAFNRGGKPVRLLGVGVRLEDLRGGFEQMELFER |
Interaction
Subunit
Monomer.
Structure
Family & Domains
Features
Showing features for domain.
Type | ID | Position(s) | Description | |||
---|---|---|---|---|---|---|
Domain | 6-187 | UmuC | ||||
Sequence: IIHVDCDCFYAAIEMRDDPSLAGKPLAVGGSADRRGVIATCNYEARAYGVRSAMSSGHALKLCPDLTIVKPRMDAYREASKEIHTIFSDYTDLIEPLSLDEAYLDVSDSAHFGGSATRIAQDIRRRVSNQLHITVSAGVAPNKFLAKIASDWRKPNGLFVITPDQVEEFVSGLPVSKLHGVG |
Sequence similarities
Belongs to the DNA polymerase type-Y family.
Phylogenomic databases
Family and domain databases
Sequence
- Sequence statusComplete
- Length353
- Mass (Da)39,375
- Last updated2005-11-08 v1
- ChecksumAC37E5B8B337ABEE
Sequence databases
Nucleotide Sequence | Protein Sequence | Molecule Type | Status | |
---|---|---|---|---|
CP000094 EMBL· GenBank· DDBJ | ABA72938.1 EMBL· GenBank· DDBJ | Genomic DNA |