RBBP4 / RBAP48 recombinant protein

Recombinant Human RBBP4 / RBAP48 Protein (His tag)

Cat. Num. AAA2545816

• Gene Names: RBBP4; NURF55; RBAP48; lin-53
• Purity: > 90 % as determined by SDS-PAGE
• Synonyms: RBBP4 / RBAP48; Recombinant Human RBBP4 / RBAP48 Protein (His tag); NURF55; RBAP48; RBBP4 / RBAP48 recombinant protein

• Host: Baculovirus-Insect Cells
• Purity/Purification: > 90 % as determined by SDS-PAGE
• Form/Format: Lyophilized from sterile 50mM Tris, 100mM NaCl, 0.5mM TCEP, 10% glycerol, pH 7.4
• Sequence Length: 425

• Application Notes: The recombinant human RBBP4 consists of 443 amino acids and predicts a molecular mass of 50 kDa as estimated in SDS-PAGE under reducing conditions.
• Predicted N Terminal: His
• Endotoxin: < 1.0 EU per mug of the protein as determined by the LAL method
• Preparation and Storage: Samples are stable for up to twelve months from date of receipt at -70 degree C

Related Product Information for RBBP4 / RBAP48 recombinant protein

A DNA sequence encoding the full length of human RBBP4 (NP_005601.1) (Met 1-Ser 425) was expressed, with a polyhistidine tag at the N-terminus.

NCBI and Uniprot Product Information

• NCBI GI #: 5032027
• NCBI GeneID: 5928
• NCBI Accession #: NP_005601.1
• NCBI GenBank Nucleotide #: NM_005610.2
• UniProt Accession #: Q09028; P31149; Q53H02; Q96BV9; B2R6G9; B4DRH0; D3DPQ3
• Molecular Weight: 43,482 Da
• NCBI Official Full Name: histone-binding protein RBBP4 isoform a
• NCBI Official Synonym Full Names: RB binding protein 4, chromatin remodeling factor
• NCBI Official Symbol: RBBP4
• NCBI Official Synonym Symbols: NURF55; RBAP48; lin-53
• NCBI Protein Information: histone-binding protein RBBP4
• UniProt Protein Name: Histone-binding protein RBBP4
• UniProt Gene Name: RBBP4
• UniProt Synonym Gene Names: RBAP48; CAF-1 subunit C; CAF-I 48 kDa subunit; CAF-I p48; RBBP-4

NCBI Description

This gene encodes a ubiquitously expressed nuclear protein which belongs to a highly conserved subfamily of WD-repeat proteins. It is present in protein complexes involved in histone acetylation and chromatin assembly. It is part of the Mi-2 complex which has been implicated in chromatin remodeling and transcriptional repression associated with histone deacetylation. This encoded protein is also part of co-repressor complexes, which is an integral component of transcriptional silencing. It is found among several cellular proteins that bind directly to retinoblastoma protein to regulate cell proliferation. This protein also seems to be involved in transcriptional repression of E2F-responsive genes. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Sep 2008]

Uniprot Description

RBBP4: Core histone-binding subunit that may target chromatin assembly factors, chromatin remodeling factors and histone deacetylases to their histone substrates in a manner that is regulated by nucleosomal DNA. Component of several complexes which regulate chromatin metabolism. These include the chromatin assembly factor 1 (CAF-1) complex, which is required for chromatin assembly following DNA replication and DNA repair; the core histone deacetylase (HDAC) complex, which promotes histone deacetylation and consequent transcriptional repression; the nucleosome remodeling and histone deacetylase complex (the NuRD complex), which promotes transcriptional repression by histone deacetylation and nucleosome remodeling; the PRC2/EED-EZH2 complex, which promotes repression of homeotic genes during development; and the NURF (nucleosome remodeling factor) complex. Interacts with SUV39H1 and HDAC7. Binds directly to helix 1 of the histone fold of histone H4, a region that is not accessible when H4 is in chromatin. Subunit of the chromatin assembly factor 1 (CAF-1) complex, which is composed of RBBP4, CHAF1B and CHAF1A. Subunit of the core histone deacetylase (HDAC) complex, which is composed of HDAC1, HDAC2, RBBP4 and RBBP7. The core HDAC complex associates with SIN3A, ARID4B/SAP180, SAP18, SAP30, SAP130, SDS3/SAP45 and possibly ARID4A/RBP1 and ING1 to form the SIN3 HDAC complex. The core HDAC complex may also associate with MTA2, MBD3, CHD3 and CHD4 to form the nucleosome remodeling and histone deacetylase complex (the NuRD complex). The NuRD complex may also interact with MBD3L1 and MBD3L2. Interacts with MTA1. Subunit of the PRC2/EED-EZH2 complex, which is composed of at least EED, EZH2, RBBP4, RBBP7 and SUZ12. The PRC2/EED-EZH2 complex may also associate with HDAC1. Component of the PRC2/EED- EZH1 complex, which includes EED, EZH1, SUZ12, RBBP4 and AEBP2. Part of the nucleosome remodeling factor (NURF) complex which consists of SMARCA1; BPTF; RBBP4 and RBBP7. Interacts with the viral protein-binding domain of the retinoblastoma protein (RB1). Interacts with SPEN/MINT. Interacts with BRCA1. Interacts with CREBBP, and this interaction may be enhanced by the binding of phosphorylated CREB1 to CREBBP. Component of the DREAM complex (also named LINC complex) at least composed of E2F4, E2F5, LIN9, LIN37, LIN52, LIN54, MYBL1, MYBL2, RBL1, RBL2, RBBP4, TFDP1 and TFDP2. The complex exists in quiescent cells where it represses cell cycle-dependent genes. It dissociates in S phase when LIN9, LIN37, LIN52 and LIN54 form a subcomplex that binds to MYBL2. Belongs to the WD repeat RBAP46/RBAP48/MSI1 family. 4 isoforms of the human protein are produced by alternative splicing.

Protein type: Nuclear receptor co-regulator

Chromosomal Location of Human Ortholog: 1p35.1

Cellular Component: ESC/E(Z) complex; nuclear chromatin; nucleoplasm; nucleus; NuRD complex; protein complex

Molecular Function: DNA-dependent ATPase activity; histone deacetylase activity; histone deacetylase binding; nucleosomal DNA binding; protein binding

Biological Process: ATP-dependent chromatin remodeling; chromatin assembly; chromatin remodeling; DNA replication-dependent nucleosome assembly; DNA replication-independent nucleosome assembly; DNA replication-independent nucleosome assembly at centromere; negative regulation of cell proliferation; negative regulation of gene expression, epigenetic; regulation of cell cycle