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pcrA | ATP-dependent DNA helicase PcrA. (1101 aa) | ||||
helD | Helicase IV. (917 aa) | ||||
recB_1 | RecBCD enzyme subunit RecB; A helicase/nuclease that prepares dsDNA breaks (DSB) for recombinational DNA repair. Binds to DSBs and unwinds DNA via a highly rapid and processive ATP-dependent bidirectional helicase activity. Unwinds dsDNA until it encounters a Chi (crossover hotspot instigator) sequence from the 3' direction. Cuts ssDNA a few nucleotides 3' to the Chi site. The properties and activities of the enzyme are changed at Chi. The Chi-altered holoenzyme produces a long 3'-ssDNA overhang and facilitates RecA-binding to the ssDNA for homologous DNA recombination and repair. Holo [...] (1229 aa) | ||||
uvrD_2 | DNA helicase II. (560 aa) |