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ChIP-seq for SCML2 and SCML2 mutants in 293T-REx and K562 cells

ABSTRACT: Polycomb repressive complex-1 (PRC1) is essential for the epigenetic regulation of gene expression. SCML2 is a mammalian homolog of Drosophila SCM, a Polycomb-group protein that associates with PRC1. Here, we show that SCML2A, an SCML2 isoform tightly associated to chromatin, contributes to PRC1 localization and also directly enforces repression of certain Polycomb target genes. SCML2A binds to PRC1 via its SPM domain and interacts with ncRNAs through a novel RNA-binding region (RBR). Targeting of SCML2A to chromatin involves the coordinated action of the MBT domains, RNA binding, and interaction with PRC1 through the SPM domain. Deletion of the RBR reduces the occupancy of SCML2A at target genes and overexpression of a mutant SCML2A lacking the RBR causes defects in PRC1 recruitment. These observations point to a role for ncRNAs in regulating SCML2 function and suggest that SCML2 participates in the epigenetic control of transcription directly and in cooperation with PRC1. This is the ChIP-seq part of the study

ORGANISM(S): Homo sapiens

SUBMITTER: Roberto Bonasio

PROVIDER: E-GEOD-38273 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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RIP-seq for SCML2 and SCML2 mutants in 293T-REx and K562 cells

Project description:Polycomb repressive complex-1 (PRC1) is essential for the epigenetic regulation of gene expression. SCML2 is a mammalian homolog of Drosophila SCM, a Polycomb-group protein that associates with PRC1. Here, we show that SCML2A, an SCML2 isoform tightly associated to chromatin, contributes to PRC1 localization and also directly enforces repression of certain Polycomb target genes. SCML2A binds to PRC1 via its SPM domain and interacts with ncRNAs through a novel RNA-binding region (RBR). Targeting of SCML2A to chromatin involves the coordinated action of the MBT domains, RNA binding, and interaction with PRC1 through the SPM domain. Deletion of the RBR reduces the occupancy of SCML2A at target genes and overexpression of a mutant SCML2A lacking the RBR causes defects in PRC1 recruitment. These observations point to a role for ncRNAs in regulating SCML2 function and suggest that SCML2 participates in the epigenetic control of transcription directly and in cooperation with PRC1. This is the RIP-seq part of the study

2014-07-02 | E-GEOD-38274 | biostudies-arrayexpress

ChIP-seq for SCML2 and SCML2 mutants in 293T-REx and K562 cells

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RIP-seq for SCML2 and SCML2 mutants in 293T-REx and K562 cells

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SFMBT1 Functions with LSD1 to Regulate Expression of Canonical Histone Genes and Chromatin-Related Factors [ChIP-Seq]

Project description:SFMBT1 is a poorly characterized mammalian MBT domain-containing protein homologous to Drosophila SFMBT, a Polycomb group protein involved in epigenetic regulation of gene expression. Here, we show that SFMBT1 regulates transcription in somatic cells and during spermatogenesis through the formation of a stable complex with LSD1 and CoREST. When bound to its gene targets, SFMBT1 recruits its associated proteins and causes chromatin compaction and transcriptional repression. SFMBT1, LSD1, and CoREST share a large fraction of target genes including those encoding replication-dependent histones. Simultaneous occupancy of histone genes by SFMBT1, LSD1, and CoREST is regulated during the cell cycle and correlates with the loss of RNA polymerase II at these promoters during G2, M, and G1. The interplay between the repressive SFMBT1M-bM-^@M-^SLSD1M-bM-^@M-^SCoREST complex and RNA polymerase II contributes to the timely transcriptional regulation of histone genes in human cells. SFMBT1, LSD1, and CoREST also form a stable complex in germ cells and their chromatin binding activity is regulated during spermatogenesis. ChIP-seq in HeLaS3 at different phases of the cell cycle and primary germ cells at different stages of spermatogenesis using antibodies against endogenous proteins

2013-03-26 | E-GEOD-45441 | biostudies-arrayexpress

ChIP-seq and RIP-seq for SCML2 and SCML2 mutants in 293T-REx and K562 cells

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

2014-07-02 | E-GEOD-38275 | biostudies-arrayexpress

USP7 cooperates with SCML2 to regulate the activity of PRC1

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SFMBT1 Functions with LSD1 to Regulate Expression of Canonical Histone Genes and Chromatin-Related Factors

Project description:This SuperSeries is composed of the SubSeries listed below. Refer to individual Series

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AUTS2 confers transcriptional activation to PRC1 in the CNS (RNA-Seq)

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