RAD23B blocking peptide

RAD23B Antibody (N-term) Blocking Peptide

• Gene Names: RAD23B; P58; HR23B; HHR23B
• Synonyms: RAD23B; RAD23B Antibody (N-term) Blocking Peptide; UV excision repair protein RAD23 homolog B; HR23B; hHR23B; XP-C repair-complementing complex 58 kDa protein; p58; RAD23B blocking peptide

• 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: 409

• Cellular Location: Nucleus. Cytoplasm. Note: The intracellular distribution is cell cycle dependent. Localized to the nucleus and the cytoplasm during G1 phase. Nuclear levels decrease during S- phase; upon entering mitosis, relocalizes in the cytoplasm without association with chromatin
• 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 RAD23B blocking peptide

Multiubiquitin chain receptor involved in modulation of proteasomal degradation. Binds to polyubiquitin chains. Proposed to be capable to bind simultaneously to the 26S proteasome and to polyubiquitinated substrates and to deliver ubiquitinated proteins to the proteasome. May play a role in endoplasmic reticulum- associated degradation (ERAD) of misfolded glycoproteins by association with PNGase and delivering deglycosylated proteins to the proteasome. The XPC complex is proposed to represent the first factor bound at the sites of DNA damage and together with other core recognition factors, XPA, RPA and the TFIIH complex, is part of the pre-incision (or initial recognition) complex. The XPC complex recognizes a wide spectrum of damaged DNA characterized by distortions of the DNA helix such as single-stranded loops, mismatched bubbles or single-stranded overhangs. The orientation of XPC complex binding appears to be crucial for inducing a productive NER. XPC complex is proposed to recognize and to interact with unpaired bases on the undamaged DNA strand which is followed by recruitment of the TFIIH complex and subsequent scanning for lesions in the opposite strand in a 5'-to-3' direction by the NER machinery. Cyclobutane pyrimidine dimers (CPDs) which are formed upon UV-induced DNA damage esacpe detection by the XPC complex due to a low degree of structural perurbation. Instead they are detected by the UV-DDB complex which in turn recruits and cooperates with the XPC complex in the respective DNA repair. In vitro, the XPC:RAD23B dimer is sufficient to initiate NER; it preferentially binds to cisplatin and UV-damaged double-stranded DNA and also binds to a variety of chemically and structurally diverse DNA adducts. XPC:RAD23B contacts DNA both 5' and 3' of a cisplatin lesion with a preference for the 5' side. XPC:RAD23B induces a bend in DNA upon binding. XPC:RAD23B stimulates the activity of DNA glycosylases TDG and SMUG1.

NCBI and Uniprot Product Information

• NCBI GI #: 1709985
• NCBI GeneID: 5887
• UniProt Accession #: P54727; Q7Z5K8; Q8WUB0; B3KWK8; G5E9P0
• Molecular Weight: 35,005 Da
• NCBI Official Full Name: UV excision repair protein RAD23 homolog B
• NCBI Official Synonym Full Names: RAD23 homolog B, nucleotide excision repair protein
• NCBI Official Symbol: RAD23B
• NCBI Official Synonym Symbols: P58; HR23B; HHR23B
• NCBI Protein Information: UV excision repair protein RAD23 homolog B
• UniProt Protein Name: UV excision repair protein RAD23 homolog B
• Protein Family: Ubiquitin receptor
• UniProt Gene Name: RAD23B
• UniProt Synonym Gene Names: HR23B; hHR23B; p58
• UniProt Entry Name: RD23B_HUMAN

NCBI Description

The protein encoded by this gene is one of two human homologs of Saccharomyces cerevisiae Rad23, a protein involved in the nucleotide excision repair (NER). This protein was found to be a component of the protein complex that specifically complements the NER defect of xeroderma pigmentosum group C (XP-c) cell extracts in vitro. This protein was also shown to interact with, and elevate the nucleotide excision activity of 3-methyladenine-DNA glycosylase (MPG), which suggested a role in DNA damage recognition in base excision repair. This protein contains an N-terminal ubiquitin-like domain, which was reported to interact with 26S proteasome, and thus this protein may be involved in the ubiquitin mediated proteolytic pathway in cells. Alternative splicing results in multiple transcript variants encoding distinct isoforms. [provided by RefSeq, Sep 2011]

Uniprot Description

RAD23B: Multiubiquitin chain receptor involved in modulation of proteasomal degradation. Binds to polyubiquitin chains. Proposed to be capable to bind simultaneously to the 26S proteasome and to polyubiquitinated substrates and to deliver ubiquitinated proteins to the proteasome. May play a role in endoplasmic reticulum- associated degradation (ERAD) of misfolded glycoproteins by association with PNGase and delivering deglycosylated proteins to the proteasome. Belongs to the RAD23 family.

Protein type: Motility/polarity/chemotaxis

Chromosomal Location of Human Ortholog: 9q31.2

Cellular Component: cytoplasm; nucleoplasm; nucleus

Molecular Function: polyubiquitin binding; protein binding; single-stranded DNA binding

Biological Process: nucleotide-excision repair; nucleotide-excision repair, DNA damage recognition; nucleotide-excision repair, DNA duplex unwinding; nucleotide-excision repair, preincision complex assembly; regulation of proteasomal ubiquitin-dependent protein catabolic process