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RBBP5 As part of the MLL1/MLL complex it is involved in methylation and dimethylation at 'Lys-4' of histone H3. H3 'Lys-4' methylation represents a specific tag for epigenetic transcriptional activation. Component of the SET1 complex, at least composed of the catalytic subunit (SETD1A or SETD1B), WDR5, WDR82, RBBP5, ASH2L/ASH2, CXXC1/CFP1, HCFC1 and DPY30. Core component of several methyltransferase-containing complexes including MLL1/MLL, ASCOM, MLL2/MLL3 and MLL3/MLL4. Each complex is at least composed of ASH2L, RBBP5, DPY30, WDR5, one or more specific histone methyltransferases (MLL, MLL2, MLL3 and MLL4), and the facultative components C16orf53/PA1, C17orf49, CHD8, E2F6, HCFC1, HCFC2, HSP70, INO80C, KDM6A, KANSL1, LAS1L, MAX, MCRS1, MEN1, MGA, MYST1/MOF, NCOA6, PAXIP1/PTIP, PELP1, PHF20, PRP31, RING2, RUVB1/TIP49A, RUVB2/TIP49B, SENP3, TAF1, TAF4, TAF6, TAF7, TAF9 and TEX10. Interacts with WDR5 and ASH2L; the interaction is direct. Interacts with WDR82 and SETD1A. Ubiquitously expressed. 2 isoforms of the human protein are produced by alternative splicing. Note: This description may include information from UniProtKB.
Protein type: Transcription, coactivator/corepressor
Chromosomal Location of Human Ortholog: 1q32.1
Cellular Component: histone methyltransferase complex; nucleolus; nucleoplasm; nucleus
Molecular Function: histone lysine N-methyltransferase activity (H3-K4 specific); histone-lysine N-methyltransferase activity; methylated histone residue binding; protein binding
Biological Process: histone H3-K4 methylation; post-translational protein modification; response to DNA damage stimulus; response to estrogen stimulus
Reference #:  Q15291 (UniProtKB)
Alt. Names/Synonyms: RBBP-5; RBBP5; RBQ3; retinoblastoma binding protein 5; Retinoblastoma-binding protein 5; Retinoblastoma-binding protein RBQ-3; SWD1; SWD1, Set1c WD40 repeat protein, homolog
Gene Symbols: RBBP5
Molecular weight: 59,153 Da
Basal Isoelectric point: 4.96  Predict pI for various phosphorylation states
Protein-Specific Antibodies or siRNAs from Cell Signaling Technology® Total Proteins
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