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Article

PCIS1 is an essential factor in mitochondrial RNA splicing and complex I biogenesis, with distinct effects in null and downregulated mutants.

Plant cell reports - 29 Jun 2026

Kobaivanov Ella, Frink Brody, Takenaka Mizuki, Ostersetzer-Biran Oren

Abstract excerpt

KEY MESSAGE: PCIS1 is indispensable for plant mitochondria NAD4 and NAD7 gene expression. Null mutants abolish CI assembly and arrest embryogenesis, whereas knockouts retain partial splicing, revealing a genetic functional mt-RNA metabolism threshold. Plant mitochondrial biogenesis relies on the splicing of numerous group II introns, primarily in genes encoding complex I (CI) subunits, which require multiple...

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Methodology Data sources Editorial policy Privacy Delete account & data About Contact Helena Bioinformatics

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Identifiers

PMID: 42371139
DOI: 10.1007/s00299-026-03821-w
PMCID: PMC13315167

Genes

ABI3

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

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