Protein Domain : Excisionase-like IPR012884

Type  Domain
Description  The phage-encoded excisionase protein (Xis, ) is involved in excisive recombination by regulating the assembly of the excisive intasome and by inhibiting viral integration. It adopts an unusual winged-helix structure in which two alpha helices are packed against two extended strands. Also present in the structure is a two-stranded anti-parallel β-sheet, whose strands are connected by a four-residue wing. During interaction with DNA, helix alpha2 is thought to insert into the major groove, while the wing contacts the adjacent minor groove or phosphodiester backbone. The C-terminal region of Xis is involved in interaction with phage-encoded integrase (Int), and a putative C-terminal alpha helix may fold upon interaction with Int and/or DNA [ ].
Short Name  Excisionase-like

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0 Gene Families

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2 Ontology Annotations

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