RBM8A blocking peptide

RBM8A Blocking Peptide (Center)

• Gene Names: RBM8A; TAR; Y14; RBM8; ZNRP; RBM8B; ZRNP1; BOV-1A; BOV-1B; BOV-1C; MDS014; DEL1q21.1; C1DELq21.1
• Synonyms: RBM8A; RBM8A Blocking Peptide (Center); RNA-binding protein 8A; Binder of OVCA1-1; BOV-1; RNA-binding motif protein 8A; RNA-binding protein Y14; Ribonucleoprotein RBM8A; RBM8; RBM8A blocking peptide

• Specificity: The synthetic peptide sequence is selected from aa 79-92 of HUMAN RBM8A
• Form/Format: Synthetic peptide was lyophilized with 100% acetonitrile and is supplied as a powder. Reconstitute with 0.1 ml DI water for a final concentration of 1 mg/ml.
• Sequence Length: 174

• Cellular Location: Nucleus. Nucleus speckle. Cytoplasm. Note: Nucleocytoplasmic shuttling protein. Travels to the cytoplasm as part of the exon junction complex (EJC) bound to mRNA. Colocalizes with the core EJC, ALYREF/THOC4, NXF1 and UAP56 in the nucleus and nuclear speckles
• Tissue Location: Ubiquitous.
• Preparation and Storage: Maintain refrigerated at 2-8 degree C for up to 6 months. For long term storage store at -20 degree C.

Related Product Information for RBM8A blocking peptide

Core component of the splicing-dependent multiprotein exon junction complex (EJC) deposited at splice junctions on mRNAs. The EJC is a dynamic structure consisting of core proteins and several peripheral nuclear and cytoplasmic associated factors that join the complex only transiently either during EJC assembly or during subsequent mRNA metabolism. The EJC marks the position of the exon-exon junction in the mature mRNA for the gene expression machinery and the core components remain bound to spliced mRNAs throughout all stages of mRNA metabolism thereby influencing downstream processes including nuclear mRNA export, subcellular mRNA localization, translation efficiency and nonsense-mediated mRNA decay (NMD). The MAGOH-RBM8A heterodimer inhibits the ATPase activity of EIF4A3, thereby trapping the ATP- bound EJC core onto spliced mRNA in a stable conformation. The MAGOH-RBM8A heterodimer interacts with the EJC key regulator WIBG/PYM leading to EJC disassembly in the cytoplasm and translation enhancement of EJC-bearing spliced mRNAs by recruiting them to the ribosomal 48S preinitiation complex. Its removal from cytoplasmic mRNAs requires translation initiation from EJC-bearing spliced mRNAs. Associates preferentially with mRNAs produced by splicing. Does not interact with pre-mRNAs, introns, or mRNAs produced from intronless cDNAs. Associates with both nuclear mRNAs and newly exported cytoplasmic mRNAs. The MAGOH-RBM8A heterodimer is a component of the nonsense mediated decay (NMD) pathway. Involved in the splicing modulation of BCL2L1/Bcl-X (and probably other apoptotic genes); specifically inhibits formation of proapoptotic isoforms such as Bcl-X(S); the function is different from the established EJC assembly.

NCBI and Uniprot Product Information

• NCBI GI #: 10720244
• NCBI GeneID: 9939
• UniProt Accession #: Q9Y5S9; Q6FHD1; Q6IQ40; Q9GZX8; Q9NZI4; B3KQI9
• Molecular Weight: 19,760 Da
• NCBI Official Full Name: RNA-binding protein 8A
• NCBI Official Synonym Full Names: RNA binding motif protein 8A
• NCBI Official Symbol: RBM8A
• NCBI Official Synonym Symbols: TAR; Y14; RBM8; ZNRP; RBM8B; ZRNP1; BOV-1A; BOV-1B; BOV-1C; MDS014; DEL1q21.1; C1DELq21.1
• NCBI Protein Information: RNA-binding protein 8A
• UniProt Protein Name: RNA-binding protein 8A
• Protein Family: RNA-binding protein
• UniProt Gene Name: RBM8A
• UniProt Synonym Gene Names: RBM8; BOV-1
• UniProt Entry Name: RBM8A_HUMAN

NCBI Description

This gene encodes a protein with a conserved RNA-binding motif. The protein is found predominantly in the nucleus, although it is also present in the cytoplasm. It is preferentially associated with mRNAs produced by splicing, including both nuclear mRNAs and newly exported cytoplasmic mRNAs. It is thought that the protein remains associated with spliced mRNAs as a tag to indicate where introns had been present, thus coupling pre- and post-mRNA splicing events. Previously, it was thought that two genes encode this protein, RBM8A and RBM8B; it is now thought that the RBM8B locus is a pseudogene. There are two alternate translation start codons with this gene, which result in two forms of the protein. An allele mutation and a low-frequency noncoding single-nucleotide polymorphism (SNP) in this gene cause thrombocytopenia-absent radius (TAR) syndrome. [provided by RefSeq, Jul 2013]

Uniprot Description

RBM8A: Component of a splicing-dependent multiprotein exon junction complex (EJC) deposited at splice junction on mRNAs. The EJC is a dynamic structure consisting of a few core proteins and several more peripheral nuclear and cytoplasmic associated factors that join the complex only transiently either during EJC assembly or during subsequent mRNA metabolism. Core components of the EJC, that remains bound to spliced mRNAs throughout all stages of mRNA metabolism, functions to mark the position of the exon-exon junction in the mature mRNA and thereby influences downstream processes of gene expression including mRNA splicing, nuclear mRNA export, subcellular mRNA localization, translation efficiency and nonsense-mediated mRNA decay (NMD). The heterodimer MAGOH-RBM8A interacts with PYM that function to enhance the translation of EJC-bearing spliced mRNAs by recruiting them to the ribosomal 48S preinitiation complex. Remains associated with mRNAs in the cytoplasm until the mRNAs engage the translation machinery. Its removal from cytoplasmic mRNAs requires translation initiation from EJC-bearing spliced mRNAs. Associates preferentially with mRNAs produced by splicing. Does not interact with pre-mRNAs, introns, or mRNAs produced from intronless cDNAs. Associates with both nuclear mRNAs and newly exported cytoplasmic mRNAs. Complex with MAGOH is a component of the nonsense mediated decay (NMD) pathway. Belongs to the RBM8A family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: RNA splicing; Translation; Spliceosome; RNA-binding

Chromosomal Location of Human Ortholog: 1q21.1

Cellular Component: cytosol; nucleoplasm

Molecular Function: mRNA binding; protein binding

Biological Process: mRNA 3'-end processing; mRNA catabolic process, nonsense-mediated decay; mRNA export from nucleus; nuclear mRNA splicing, via spliceosome; regulation of alternative nuclear mRNA splicing, via spliceosome; RNA export from nucleus; termination of RNA polymerase II transcription

Disease: Thrombocytopenia-absent Radius Syndrome