Proteomics

Dataset Information

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CryoEM Structures of Arabidopsis DDR Complexes Involved in RNA-directed DNA Methylation

ABSTRACT: Chemical cross-linking coupled to mass spectrometry was used to study the A. thaliana DDR complex consisting of DMS3, RMD1 and a peptide from the interaction region of DRD1. Cross-linking was performed using different cross-linking chemistries: disuccinimidyl suberate (DSS) and a combination of adipic acid dihydrazide (ADH) and the coupling reagent, DMTMM.

INSTRUMENT(S): Orbitrap Fusion Lumos

ORGANISM(S): Arabidopsis Thaliana (mouse-ear Cress)

SUBMITTER: Alexander Leitner  

LAB HEAD: Steve E. Jacobsen

PROVIDER: PXD013470 | Pride | 2019-07-15

REPOSITORIES: Pride

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Dataset's files

Source:
Action DRS
DDR_Oct18.fasta Fasta
File_information.xlsx Xlsx
XL-MS_identifications_DDR.xlsx Xlsx
aleitner_D1810_096.raw Raw
aleitner_D1810_097.raw Raw
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Publications

Transcription by RNA polymerase V (Pol V) in plants is required for RNA-directed DNA methylation, leading to transcriptional gene silencing. Global chromatin association of Pol V requires components of the DDR complex DRD1, DMS3 and RDM1, but the assembly process of this complex and the underlying mechanism for Pol V recruitment remain unknown. Here we show that all DDR complex components co-localize with Pol V, and we report the cryoEM structures of two complexes associated with Pol V recruitme  ...[more]

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