Loss of Function of KMT2D in MLL4 Complex Formation in Kabuki Syndrome / Epigenetic regulation of gene expression by MLL3 and MLL4 complexes / MLL3/4 complex / Set1C/COMPASS complex / MLL1/2 complex / Formation of WDR5-containing histone-modifying complexes / histone methyltransferase complex / MLL1 complex / transcription initiation-coupled chromatin remodeling / Deactivation of the beta-catenin transactivating complex ...Loss of Function of KMT2D in MLL4 Complex Formation in Kabuki Syndrome / Epigenetic regulation of gene expression by MLL3 and MLL4 complexes / MLL3/4 complex / Set1C/COMPASS complex / MLL1/2 complex / Formation of WDR5-containing histone-modifying complexes / histone methyltransferase complex / MLL1 complex / transcription initiation-coupled chromatin remodeling / Deactivation of the beta-catenin transactivating complex / Formation of the beta-catenin:TCF transactivating complex / RUNX1 regulates genes involved in megakaryocyte differentiation and platelet function / PKMTs methylate histone lysines / response to estrogen / Activation of anterior HOX genes in hindbrain development during early embryogenesis / Neddylation / MLL4 and MLL3 complexes regulate expression of PPARG target genes in adipogenesis and hepatic steatosis / histone binding / transcription cis-regulatory region binding / DNA damage response / nucleolus / nucleoplasm / nucleus Similarity search - Function
Journal: Nucleic Acids Res / Year: 2019 Title: The internal interaction in RBBP5 regulates assembly and activity of MLL1 methyltransferase complex. Authors: Jianming Han / Tingting Li / Yanjing Li / Muchun Li / Xiaoman Wang / Chao Peng / Chen Su / Na Li / Yiwen Li / Ying Xu / Yong Chen / Abstract: The Mixed Lineage Leukemia protein 1 (MLL1) plays an essential role in the maintenance of the histone H3 lysine 4 (H3K4) methylation status for gene expression during differentiation and development. ...The Mixed Lineage Leukemia protein 1 (MLL1) plays an essential role in the maintenance of the histone H3 lysine 4 (H3K4) methylation status for gene expression during differentiation and development. The methyltransferase activity of MLL1 is regulated by three conserved core subunits, WDR5, RBBP5 and ASH2L. Here, we determined the structure of human RBBP5 and demonstrated its role in the assembly and regulation of the MLL1 complex. We identified an internal interaction between the WD40 propeller and the C-terminal distal region in RBBP5, which assisted the maintenance of the compact conformation of the MLL1 complex. We also discovered a vertebrate-specific motif in the C-terminal distal region of RBBP5 that contributed to nucleosome recognition and methylation of nucleosomes by the MLL1 complex. Our results provide new insights into functional conservation and evolutionary plasticity of the scaffold protein RBBP5 in the regulation of KMT2-family methyltransferase complexes.
A: Retinoblastoma-binding protein 5 B: Retinoblastoma-binding protein 5 C: Retinoblastoma-binding protein 5 D: Retinoblastoma-binding protein 5 hetero molecules