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Zea mays MURB-like protein (MuDR) This family consists of several Zea mays specific MURB-like proteins. The transposition of Mu elements underlying Mutator activity in maize requires a transcriptionally active MuDR element. Despite variation in MuDR copy number and RNA levels in Mutator lines, transposition events are consistently late in plant development, and Mu excision frequencies are similar.
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