1m0d

Structural highlights

Function

ENDO_BPT7 Junction-resolving enzyme that selectively binds and cleaves four-way (Holliday) DNA junctions present after viral genomic replication. These intermediates are created during DNA repair, processing of stalled replication forks and homologous genetic recombination. Introduces two nicks on the two non-crossing strands, at 5' sides of the junction. Participates also together with gp6 in the degradation of host chromosome to provide nucleotides for phage DNA synthesis.^{[1] [2] [3] [4]}

Evolutionary Conservation

Checkto colour the structure by Evolutionary Conservation, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

See Also

• Endonuclease 3D structures

References

1. ↑ Declais AC, Fogg JM, Freeman AD, Coste F, Hadden JM, Phillips SE, Lilley DM. The complex between a four-way DNA junction and T7 endonuclease I. EMBO J. 2003 Mar 17;22(6):1398-409. PMID:12628932 doi:http://dx.doi.org/10.1093/emboj/cdg132
2. ↑ Freeman AD, Declais AC, Lilley DM. The importance of the N-terminus of T7 endonuclease I in the interaction with DNA junctions. J Mol Biol. 2013 Jan 23;425(2):395-410. doi: 10.1016/j.jmb.2012.11.029. Epub 2012, Dec 1. PMID:23207296 doi:http://dx.doi.org/10.1016/j.jmb.2012.11.029
3. ↑ Panayotatos N, Fontaine A. An endonuclease specific for single-stranded DNA selectively damages the genomic DNA and induces the SOS response. J Biol Chem. 1985 Mar 10;260(5):3173-7. PMID:3972821
4. ↑ Parkinson MJ, Lilley DM. The junction-resolving enzyme T7 endonuclease I: quaternary structure and interaction with DNA. J Mol Biol. 1997 Jul 11;270(2):169-78. PMID:9236119 doi:http://dx.doi.org/10.1006/jmbi.1997.1128