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. 2010 Sep 2;107(38):16512–16517. doi: 10.1073/pnas.1004181107

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Fig. 3. — Members of the TOPLESS (TPL)/LEUNIG corepressor family are targets of SUMOylation. (A) Phylogenetic tree of the Arabidopsis TPL/LEUNIG family (20) with SUMOylated members underlined. The number of transcripts for each locus in the Arabidopsis EST database is in parentheses. TPR, TPL-related. (B) Detection of TPL-SUMO1 conjugates. TPL was immunoprecipitated from heat-stressed wild-type (WT) and TPL-HA expressing seedlings with anti-HA antibodies and subjected to immunoblot analysis with anti-HA or anti-SUMO1 antibodies. Input, crude extracts before immunoprecipitation. Location of the free TPL-HA and TPL-HA-SUMO1 conjugates are indicated. * identifies a breakdown production of TPL (21). (C) The proposed genetic and/or biochemical interactions of LEUNIG and TPL with their respective partners and target genes highlighting the proteins modified with SUMO1 (S).