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CATH Superfamily 3.60.10.10

Endonuclease/exonuclease/phosphatase

The name of this superfamily has been modified since the most recent official CATH+ release (v4_2_0). At the point of the last release, this superfamily was named:

"
Endonuclease/exonuclease/phosphatase
".

Functional Families

Overview of the Structural Clusters (SC) and Functional Families within this CATH Superfamily. Clusters with a representative structure are represented by a filled circle.
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FunFam 4823: Exodeoxyribonuclease III, putative

There are 3 EC terms in this cluster

Please note: EC annotations are assigned to the full protein sequence rather than individual protein domains. Since a given protein can contain multiple domains, it is possible that some of the annotations below come from additional domains that occur in the same protein, but have been classified elsewhere in CATH.

Note: The search results have been sorted with the annotations that are found most frequently at the top of the list. The results can be filtered by typing text into the search box at the top of the table.

EC Term Annotations Evidence
Exodeoxyribonuclease (lambda-induced). [EC: 3.1.11.3]
Exonucleolytic cleavage in the 5'- to 3'-direction to yield nucleoside 5'-phosphates.
  • Preference for double-stranded DNA.
  • Does not attack single-strand breaks.
  • Similar enzymes: T4, T5 and T7 exonucleases, mammalian DNase IV.
  • Formerly EC 3.1.4.28.
 2 Q8ILF8 W7K7D7
DNA-(apurinic or apyrimidinic site) lyase. [EC: 4.2.99.18]
The C-O-P bond 3' to the apurinic or apyrimidinic site in DNA is broken by a beta-elimination reaction, leaving a 3'-terminal unsaturated sugar and a product with a terminal 5'-phosphate.
  • 'Nicking' of the phosphodiester bond is due to a lyase-type reaction, not hydrolysis.
  • This group of enzymes was previously listed as endonucleases, under the number EC 3.1.25.2.
 2 Q8ILF8 W7K7D7
Spleen exonuclease. [EC: 3.1.16.1]
Exonucleolytic cleavage in the 5'- to 3'-direction to yield nucleoside 3'-phosphates.
  • Preference for single-stranded substrate.
  • Similar enzymes: Lactobacillus acidophilus nuclease, Bacillus subtilis nuclease, salmon testis nuclease.
  • Formerly EC 3.1.4.18.
 2 Q8ILF8 W7K7D7