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Comment
. 2023 Aug 3;192(4):2577-2579.
doi: 10.1093/plphys/kiad260.

Lost in transition: Maize BAM7 is a dual function gene encoding a nuclear BAM7 and plastidial BAM2

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Comment

Lost in transition: Maize BAM7 is a dual function gene encoding a nuclear BAM7 and plastidial BAM2

Jiawen Chen. Plant Physiol. .
No abstract available

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Conflict of interest statement

Conflict of interest statement. None declared.

Figures

Figure 1.
Figure 1.
ZmBAM7 encodes 2 transcripts that resemble AtBAM7 and AtBAM2.A) Gene models of the full-length ZmBAM7 gene and the 2 transcripts generated from it. Exons (dark bars), introns (dark lines), and 2 putative TSSs are indicated. The 2 TSSs are approximately 1 kb apart. The approximate positions of the nuclear localization signal and BZR1-like DNA binding domain are indicated in the first exon, and the position of the predicted chloroplast transit peptide (cTP) is indicated in the second intron. White boxes are 5′ UTRs. On the right, the localization of the ZmBAM7-L DNA binding domain and the ZmBAM7-S protein expressed in Arabidopsis protoplasts are shown. Hoechst dye stains DNA and marks the site of the nucleus. This image was adapted from Ozcan and Monroe (2023). B) Schematic summarizing the events proposed during the evolution of BAM2 and BAM7, with BAM2 as the ancestral gene. DF-BAM7 is the dual function BAM7 as found in Z. mays. To the right, the separate BAM2 and BAM7 genes are as they appear in Arabidopsis after duplication and subfunctionalization. Some species have also lost BAM2 and retain only a specialized BAM7.

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References

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