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・ Excise and taxation department, Punjab (Pakistan)
・ Excise stamp
・ Excise stamps of Russia
・ Excise stamps of Ukraine
・ Excise tax in the United States
・ Excise Tax Reduction Act of 1954
・ Excise, Overhead, Handling
・ Excised and Anatomised
・ Excised slitshell
・ Excision
・ Excision (film)
・ Excision (musician)
・ Excision repair cross-complementing
・ Excision theorem
・ Excisional skin surgery
Excisionase
・ Excisive triad
・ Excitable
・ Excitable Boy
・ Excitable medium
・ Excitante
・ Excitation
・ Excitation (magnetic)
・ Excitation filter
・ Excitation function
・ Excitation table
・ Excitation temperature
・ Excitation-transfer theory
・ Excitator
・ Excitatory amino acid receptor agonist


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Excisionase : ウィキペディア英語版
Excisionase

In molecular biology, excisionase is a bacteriophage protein encoded by the Xis gene. It 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 beta-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 excisionase 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.
==References==


抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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