Organism
Aeropyrum pernix (strain ATCC 700893 / DSM 11879 / JCM 9820 / NBRC 100138 / K1)
Function
Modifies the topological state of DNA by introducing positive supercoils in an ATP-dependent process. It cleaves transiently a single DNA strand and remains covalently bound to the 5' DNA end through a tyrosine residue. May be involved in rewinding the DNA strands in the regions of the chromosome that have opened up to allow transcription or replication.
Similarity
In the C-terminal section; belongs to the prokaryotic type I/III topoisomerase family.
Sequence
MPGGVNAVYMGLCYNCGGNIDEDRLEKGLPCARCLPSPPRRATPLTVYRALKKAGTLGAYSWEYLSIREVERFEAYFAAKSGSRLWSAQRSWAKRLVKGDSFAIIAPTGVGKSTLLTVYAAYVAAVKRGRVLYLVPTENLVRQVYAKLDQVEPGIATAYYSRMPAKARESSLEKIASGGARLIVATTGFLSRRFDLLHPQYKFDLAIVDDVDSLLRNSRNVERILLLTGFSEETVEAAHSLVKARLKLYRALHSGASESIVSRLEQEIAQLEARLRLSLSEASPGQLVIASATGRPRGVKHLLFKELLGFEVGGGSDYLRNIVDAYVVDSDPVGRTAEIVSALGDGVIVFVSQRLGKDVARAIAGRLEGMGVSTALALTGARRPVEAFARGEARVLIGMASRYGVIVRGLDLPERSKYAVFLGAPSAKTHLLEALYSPRRMLAFLSIAQEKGVEWAGEAFRRLSRLLEKVIDTSIVSLAARGKLEAQGPAGEAAGIISETAPRLVDWLVAEARLQGGLLRVGGLVVDARGPIPYLVVPDAPTYIQASGRVSRLYRGVMTRGLSIVVDEAPEYVEALGERLKWTTSSRLRPLSEVDMEKLRREIEESRRGKGRRVRVKTTLLVVESPTKARTIAWFWGRPGKRRIGRSVIYEASVSDPETGDVHILQITSTRGHLTDLTTDSVGSKYGVDEDGGGYRAYYSTIKRCLDCGAQHTSSSPFCPRCGSPRQVDSKSVVEILRKLASEVDEIVIATDPDREGEKIAWDVFLAVRPYNPNVRRGRFHEVTPRAVIEALRSGESVEKSLIEAQKVRRIVDRWIGFHLSTHLKLKFSKPWLGAGRVQTPVLGWIVDRYREWQDTRGYLVIFKLSSGGRTSYFTQNRLEVENLKRVEWLEVVDIAGKTEERNPPPPYTTDEYLYDASRKLGLSAGLAMKIAQDLFESGLITYHRTDSTRVSPTGVKLALEYLASRGLEGEAQPRGWGEGGAHEAIRPVRPIDAQDLERAVLSGSIRIPIRLTRLHIRVYDMIFRRFIASQMKPATLDIVEATLQAGETVFNHAGVARVRGGYALVNPPRVEEWLARLSPGDRIDVEDVLVVKSSLKRLYRAGDIVKMMREHGIGRPSTYAKAIEQNRRHGYVIESKKMRYLIPTKTGVSIYDYLSNGFKKLVSVDTTRRLEEALERVEKGVEKPEAVLASVWRMVDEAVSLHAATGDVMGQSEA