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The AtRNC1-AtWTF1 protein complex is essential for chloroplast group Ⅱ intron splicing, ribosome biogenesis, and embryo development in Arabidopsis.

Plant molecular biology - 24 Aug 2026

Zhang Yichen, Xu Xinyun, Li Yajuan, Wei Siwen, Shen Jiayi, Yu Qing-Bo, Cui Yong-Lan

Abstract excerpt

The splicing of group Ⅱ introns in chloroplasts is essential for photosynthesis and plant development and relies on a series of nucleus-encoded RNA-binding proteins. Here, we demonstrate that two Arabidopsis proteins, ribonuclease Ⅲ-domain protein AtRNC1 and the Plant organelle RNA recognition (PORR) protein AtWTF1, are essential for chloroplast function. Null mutants of AtRNC1 or AtWTF1 are embryo lethal. We...

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Identifiers

PMID: 42635848
DOI: 10.1007/s11103-026-01756-0

Genes

ABI3

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 15 Oct 2026.

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