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topR-1 | Reverse gyrase (topR-1); 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 (By similarity). Its activity is inhibited by the DNA- binding protein 7d (Sso7d), suggesting that the Sso7d activity might counteract the overwinding effect of reverse gyrase. In the C-terminal section; belongs [...] (1242 aa) | ||||
topR-2 | Reverse gyrase (topR-2); 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; In the C-terminal section; belongs to the prokaryotic type I/III topoisomerase family. (1166 aa) |