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  De-etiolation-induced protein 1 (DEIP1) mediates assembly of the cytochrome b6f complex in Arabidopsis

Sandoval-Ibanez, O., Rolo, D., Ghandour, R., Hertle, A. P., Armarego-Marriott, T., Sampathkumar, A., et al. (2022). De-etiolation-induced protein 1 (DEIP1) mediates assembly of the cytochrome b6f complex in Arabidopsis. Nature Communications, 13(1): 4045. doi:10.1038/s41467-022-31758-7.

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 Creators:
Sandoval-Ibanez, O.1, Author           
Rolo, D.1, Author           
Ghandour, R.2, Author           
Hertle, A. P.1, Author           
Armarego-Marriott, T.1, Author           
Sampathkumar, A.3, Author           
Zoschke, R.2, Author           
Bock, R.1, Author           
Affiliations:
1Organelle Biology and Biotechnology, Department Bock, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_1753326              
2Translational Regulation in Plants, Department Bock, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_2324691              
3Plant Cell Biology and Microscopy, Infrastructure Groups and Service Units, Max Planck Institute of Molecular Plant Physiology, Max Planck Society, ou_2253647              

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 Abstract: The conversion of light energy to chemical energy by photosynthesis requires the concerted action of large protein complexes in the thylakoid membrane. Recent work has provided fundamental insights into the three-dimensional structure of these complexes, but how they are assembled from hundreds of parts remains poorly understood. Particularly little is known about the biogenesis of the cytochrome b6f complex (Cytb6f), the redox-coupling complex that interconnects the two photosystems. Here we report the identification of a factor that guides the assembly of Cytb6f in thylakoids of chloroplasts. The protein, DE-ETIOLATION-INDUCED PROTEIN 1 (DEIP1), resides in the thylakoid membrane and is essential for photoautotrophic growth. Knock-out mutants show a specific loss of Cytb6f, and are defective in complex assembly. We demonstrate that DEIP1 interacts with the two cytochrome subunits of the complex, PetA and PetB, and mediates the assembly of intermediates in Cytb6f biogenesis. The identification of DEIP1 provides an entry point into the study of the assembly pathway of a crucial complex in photosynthetic electron transfer.

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Language(s): eng - English
 Dates: 2022-07-13
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1038/s41467-022-31758-7
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Title: Nature Communications
  Abbreviation : Nat. Commun.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: 4045 Volume / Issue: 13 (1) Sequence Number: 4045 Start / End Page: - Identifier: ISSN: 2041-1723
CoNE: https://pure.mpg.de/cone/journals/resource/2041-1723