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Category:GO:0043336 ! site-specific telomere resolvase activity

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DAG for GO:0043336id: GO:0043336

name: site-specific telomere resolvase activity
namespace: molecular_function
def: "Catalysis of a site-specific breakage and reunion reaction that generates two hairpin telomeres from a replicated telomere substrate. Occurs via a two-step transesterification with a protein-DNA intermediate similar to that used by topoisomerases and site-specific recombinases." [GOC:jl, PMID:11804598]
comment: Note that while this enzyme uses a similar reaction chemistry to topoisomerases and site-specific recombinases, it performs a unique reaction. Topoisomerases promote breakage and reunion of either one or two DNA strands to alter the topological state of a DNA molecule. Site-specific recombinases perform a more complex reaction in which four strands are broken and subsequently joined to a different DNA duplex, resulting in the production of a recombinant product. The telomere resolvases on the other hand, must break two phosphodiester bonds in a single DNA duplex (one on each strand) and join each end with the opposite DNA strand to form covalently closed hairpin telomeres.
synonym: "ResT" NARROW []
synonym: "TelN" NARROW []
is_a: GO:0140097 ! catalytic activity, acting on DNA
relationship: part_of: GO:0000723 ! telomere maintenance


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