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Updated: Feb 10, 2026

Dissection of Human Vitreous Body Elements for Proteomic Analysis
Published on: January 23, 2011
C-BERST: defining subnuclear proteomic landscapes at genomic elements with dCas9-APEX2
Xin D Gao1, Li-Chun Tu1, Aamir Mir1
1RNA Therapeutics Institute, University of Massachusetts Medical School, Worcester, MA, USA.
Abstract:
Mapping proteomic composition at distinct genomic loci in living cells has been a long-standing challenge. Here we report that dCas9-APEX2 biotinylation at genomic elements by restricted spatial tagging (C-BERST) allows the rapid, unbiased mapping of proteomes near defined genomic loci, as demonstrated for telomeres and centromeres. C-BERST enables the high-throughput identification of proteins associated with specific sequences, thereby facilitating annotation of these factors and their roles.
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