ArticlePlant physiology2011
Plastids contain a second sec translocase system with essential functions.
Article in Plant physiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 50 papers.
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Who cites it
50 citing papers in PubMed, 101 citations in OpenAlex.
- Article
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- Deletion of GhSCY2D Causes Impaired Chloroplast Development and Temperature-Dependent Leaf Yellowing in Cotton (Gossypium hirsutum L.).Plant, cell & environment · 2025Article
- Yellow barley xan-m mutants are deficient in the motor unit SECA1 of the SEC1 translocase system.Planta · 2025Article
- QTL mapping and candidate gene mining of seed size and seed weight in castor plant (Ricinus communis L.).BMC plant biology · 2024Article
- Population genomics and epigenomics of Spirodela polyrhiza provide insights into the evolution of facultative asexuality.Communications biology · 2024Article
- 'Candidatus Phytoplasma mali' SAP11-Like protein modulates expression of genes involved in energy production, photosynthesis, and defense in Nicotiana occidentalis leaves.BMC plant biology · 2024Article
- Plastid Molecular Chaperone HSP90C Interacts with the SecA1 Subunit of Sec Translocase for Thylakoid Protein Transport.Plants (Basel, Switzerland) · 2024Article
- Dynamics of chromatin accessibility and genome wide control of desiccation tolerance in the resurrection plant Haberlea rhodopensis.BMC plant biology · 2023Article
- Proteome and Interactome Linked to Metabolism, Genetic Information Processing, and Abiotic Stress in Gametophytes of Two Woodferns.International journal of molecular sciences · 2023Article
- Comparative transcriptome analysis of Zea mays upon mechanical wounding.Molecular biology reports · 2023Article
- The journey of preproteins across the chloroplast membrane systems.Frontiers in physiology · 2023Review
- The plastid-encoded protein Orf2971 is required for protein translocation and chloroplast quality control.The Plant cell · 2022Article
- Transcriptomic Analysis Reveals LncRNAs Associated with Flowering ofCurrent issues in molecular biology · 2022Article
- Article
- Light Quality Modulates Plant Cold Response and Freezing Tolerance.Frontiers in plant science · 2022Article
- Fates of Sec, Tat, and YidC Translocases in Mitochondria and Other Eukaryotic Compartments.Molecular biology and evolution · 2021Review
- A homolog of GuidedEntry of Tail-anchored proteins3 functions in membrane-specific protein targeting in chloroplasts of Arabidopsis.The Plant cell · 2021Article
- Get closer and make hotspots: liquid-liquid phase separation in plants.EMBO reports · 2021Review
- Plastid chaperone HSP90C guides precursor proteins to the SEC translocase for thylakoid transport.Journal of experimental botany · 2020Article
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Authors and funding
8 authors at 2 institutions in 1 country.
Funding
Abstract
Proteins that are synthesized on cytoplasmic ribosomes but function within plastids must be imported and then targeted to one of six plastid locations. Although multiple systems that target proteins to the thylakoid membranes or thylakoid lumen have been identified, a system that can direct the integration of inner envelope membrane proteins from the stroma has not been previously described. Genetics and localization studies were used to show that plastids contain two different Sec systems with distinct functions. Loss-of-function mutations in components of the previously described thylakoid-localized Sec system, designated as SCY1 (At2g18710), SECA1 (At4g01800), and SECE1 (At4g14870) in Arabidopsis (Arabidopsis thaliana), result in albino seedlings and sucrose-dependent heterotrophic growth. Loss-of-function mutations in components of the second Sec system, designated as SCY2 (At2g31530) and SECA2 (At1g21650) in Arabidopsis, result in arrest at the globular stage and embryo lethality. Promoter-swap experiments provided evidence that SCY1 and SCY2 are functionally nonredundant and perform different roles in the cell. Finally, chloroplast import and fractionation assays and immunogold localization of SCY2-green fluorescent protein fusion proteins in root tissues indicated that SCY2 is part of an envelope-localized Sec system. Our data suggest that SCY2 and SECA2 function in Sec-mediated integration and translocation processes at the inner envelope membrane.
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