Exodeoxyribonuclease I - P04995 (EX1_ECOLI)


Protein Feature View of PDB entries mapped to a UniProtKB sequence  

  • Number of PDB entries for P04995: 12
Degrades single-stranded DNA (ssDNA) in a highly processive manner (PubMed:23609540). Also functions as a DNA deoxyribophosphodiesterase that releases deoxyribose-phosphate moieties following the cleavage of DNA at an apurinic/apyrimidinic (AP) site by either an AP endonuclease or AP lyase (PubMed:1329027). (data source: UniProt  )
Catalytic Activity

Exonucleolytic cleavage in the 3'- to 5'-direction to yield nucleoside 5'-phosphates.

(data source: UniProt  )
Subunit structure
Monomer (PubMed:23609540). Interacts with ssb (via C-terminus); this interaction stimulates the exonuclease activity by recruiting the enzyme to its substrate (PubMed:18591666, PubMed:20018747). (data source: UniProt  )
The N-terminal exonuclease domain and the exonuclease C-terminal domain form a central positively charged groove which binds the DNA. (data source: UniProt  )
Other Gene names: sbcB cpeA xonA b2011 JW1993
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Data in green originates from UniProtKB  
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Data in orange originates from the SCOP   (version 1.75) and SCOPe   (version 2.04) classifications.
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  • Blue: hydrophilic.
Data in lilac represent the genomic exon structure projected onto the UniProt sequence.
Data in blue originates from PDB
  • Secstruc: Secondary structure projected from representative PDB entries onto the UniProt sequence.
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The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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