background:
The RAD23 gene of Saccharomyces cerevisiae is required for excision-repair of UV damaged DNA (1). RAD23 resembles the other DNA repair genes, RAD2, RAD6, RAD7, RAD18, and RAD54, all of which also exhibit increased transcription in response to DNA damage and during meiosis (2). RAD23 encodes a nuclear protein containing a ubiquitin-like domain required for biological function (3). RAD23 bears a ubiquitin-like domain at its amino terminus and this ubiquitin-like domain affects protein function in a nonproteolytic manner (3). Rad23 is a highly conserved protein involved in nucleotide excision repair (NER) that associates with the proteasome via its amino-terminus (4). Its carboxy-terminal ubiquitin-associated domain is evolutionarily conserved from yeast to humans (4). In addition to a role in DNA repair events in yeast, several lines of evidence indicate that the Rad23 protein may regulate the activity of the 26 S proteasome (5).
Function:
Plays a central role both in proteasomal degradation of misfolded proteins and DNA repair. Central component of a complex required to couple deglycosylation and proteasome-mediated degradation of misfolded proteins in the endoplasmic reticulum that are retrotranslocated in the cytosol. Involved in DNA excision repair. May play a part in DNA damage recognition and/or in altering chromatin structure to allow access by damage-processing enzymes.
Subunit:
Interacts directly with PNG1.
Subcellular Location:
Nucleus. Cytoplasm.
Similarity:
Contains 2 UBA domains.
Contains 1 ubiquitin-like domain.
Database links:
UniProtKB/Swiss-Prot: P32628.1
Important Note:
This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.
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