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• W2768045244 endingPage "e0187753" @default.
• W2768045244 startingPage "e0187753" @default.
• W2768045244 abstract "Pentatricopeptide repeat proteins are one of the major protein families in flowering plants, containing around 450 members. They participate in RNA editing and are related to plant growth, development and reproduction, as well as to responses to ABA and abiotic stresses. Their characteristics have been described in silico; however, relatively little is known about their biochemical properties. Different types of PPR proteins, with different tasks in RNA editing, have been suggested to interact in an editosome to complete RNA editing. Other non-PPR editing factors, such as the multiple organellar RNA editing factors and the organelle RNA recognition motif-containing protein family, for example, have also been described in plants. However, while evidence on protein interactions between non-PPR RNA editing proteins is accumulating, very few PPR protein interactions have been reported; possibly due to their high instability. In this manuscript, we aimed to optimize the conditions for non-denaturing protein extraction of PPR proteins allowing in vivo protein analyses, such as interaction assays by co-immunoprecipitation. The unusually high protein degradation rate, the aggregation properties and the high pI, as well as the ATP-dependence of some PPR proteins, are key aspects to be considered when extracting PPR proteins in a non-denatured state. During extraction of PPR proteins, the use of proteasome and phosphatase inhibitors is critical. The use of the ATP-cofactor reduces considerably the degradation of PPR proteins. A short centrifugation step to discard cell debris is essential to avoid PPR precipitation; while in some cases, addition of a reductant is needed, probably caused by the pI/pH context. This work provides an easy and rapid optimized non-denaturing total protein extraction protocol from plant tissue, suitable for polypeptides of the PPR family." @default.
• W2768045244 created "2017-11-17" @default.
• W2768045244 creator A5053865766 @default.
• W2768045244 creator A5070421464 @default.
• W2768045244 date "2017-11-07" @default.
• W2768045244 modified "2023-09-23" @default.
• W2768045244 title "Optimization of non-denaturing protein extraction conditions for plant PPR proteins" @default.
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• W2768045244 doi "https://doi.org/10.1371/journal.pone.0187753" @default.
• W2768045244 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/5675432" @default.
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• W2768045244 hasPublicationYear "2017" @default.
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