Organism
Caldanaerobacter subterraneus subsp. tengcongensis (strain DSM 15242 / JCM 11007 / NBRC 100824 / MB4)
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
MALATGAKYYHSCINCGGINTDTRNEKGLPCEVCLPFEDGDVLKGLKLNNSLKGYEKYWNLNQQYKEFEEFFFSKINKKPTGYQRFWAKRLLLSKSFTLVAPTGVGKTTFGLISALWIAKKGGKVALVFPTVSLVEQAAKRLIEFSKEDEDVNILFYTSSLKKKEREKFEKNFSEGNYDILVISSQFISKRKEQLSQKVFDLVFVDDVDAVLKSSKNIDTLLNMIGISQKAIDSTLDNLKKGNNSDKIQIEEKAPKGRLIVSSATAKPKGIKPLLFRELLGFEIGRFTTSARNITNVRIKEKSLEKLLYIINLLKDGILLFVPTEEEGKEIANYLEEHGVKLGKTWEDFEKSFEKFKEGSLQLLCGIYSYYGKLVRGIDLPLRIKFAVFWGTPSFKFSTKLENAPRFILERNFQDYLENNPKLKAYFKDLQRLSTEKLRKSVEKYISPETWEKLIQKNFPTTKFDKEKNLIVIPDVYTYIQASGRTSRIFGTSLTKGISILFEEDDSLFELLKARLLYLTEEEWTEEGEIEHLVKEAEETRKAISTDSSSKDMKSRMIIVESPTKAQTISKFLEKSSTRRYGSLMVHESITQEGILLLTASKGHLYDLETKTGLHGVEINDGRFIPYYNSIKRCSSCGAQFTDELPRCPYCNSDKIDDKKKILEALRDIAMEVDEVIIATDPDVEGEKIGWDISQYIKPVNKNVQRIEMHEITKFGFDKAIRNRRNCDVNLVKSQIVRRIEDRWVGFELSLRLQKNFQNSNLSAGRVQSTVLGWILEKEIEHSKSKKTVTQFTLDNGFKFEVDGKIDVDEVEVEIVEEKEQALSPLPPFNTPSLLTAASQQFKLPVQQIMEILQTLFELGFITYHRTDSTRISSTGQKIARSYLEKIGKITLLSEREWGKEGAHEAIRPVKPISPEELSEFITEKIAAYLSPMHIKVYSLIFNRFMASQMTSPVVINQKILIKNGSFQVEREVPVKLQEEGWNIFNPITVYTPFEEKKYSVVSKRTYTTHTVPLFTQASLIEEMQKRNIGRPSTYAKIVDILFKRKYIIEDVYKRLRTTALGRKVYSYLSERYMNYINEETTRQLEKLMESVETGEKDYQSVLKNLYEELNEILIKN