DDB1
Gene
Protein
The DDB1 gene encodes the large subunit of DNA damage-binding protein, a heterodimer composed of a large and a small (DDB2) subunit. DDB1 contains 1140 amino acids, amounting to a mass of 127 kDa.
Function
As its name suggests, DDB1 was initially implicated in the process of a specific type of DNA repair known as nucleotide excision repair. Since then, researchers have found that DDB1 primarily functions as a core component of the CUL4A- and CUL4B-based E3 ubiquitin ligase complexes. DDB1 serves as a bridge or adaptor protein which interacts with dozens of proteins known as DDB1 and CUL4-associated factors (DCAFs).{{cite journal| doi=10.1016/j.molcel.2007.06.001 | pmid=17588513 | volume=26 | issue=6 | title=DCAFs, the Missing Link of the CUL4-DDB1 Ubiquitin Ligase | year=2007 | journal=Molecular Cell | pages=775–780 | vauthors=Lee J| doi-access=free }} These DCAFs are often ubiquitin ligase substrates and regulate numerous essential processes in the cell including DNA repair (DDB2), DNA replication, chromatin remodeling (Cdt2) and more.
Interactions
References
{{reflist|30em|refs=
}}
Further reading
{{refbegin | 2}}
- {{cite journal | vauthors=Chu G, Chang E |title=Xeroderma pigmentosum group E cells lack a nuclear factor that binds to damaged DNA. |journal=Science |volume=242 |issue= 4878 |pages= 564–7 |year= 1988 |pmid= 3175673 |doi=10.1126/science.3175673 |bibcode=1988Sci...242..564C }}
- {{cite journal | vauthors=Lee TH, Elledge SJ, Butel JS |title=Hepatitis B virus X protein interacts with a probable cellular DNA repair protein. |journal=J. Virol. |volume=69 |issue= 2 |pages= 1107–14 |year= 1995 |pmid= 7815490 |doi= 10.1128/JVI.69.2.1107-1114.1995| pmc=188683 }}
- {{cite journal | vauthors=Keeney S, Eker AP, Brody T |title=Correction of the DNA repair defect in xeroderma pigmentosum group E by injection of a DNA damage-binding protein. |journal=Proc. Natl. Acad. Sci. U.S.A. |volume=91 |issue= 9 |pages= 4053–6 |year= 1994 |pmid= 8171034 |doi=10.1073/pnas.91.9.4053 | pmc=43721 |bibcode=1994PNAS...91.4053K |display-authors=etal|url=https://repub.eur.nl/pub/3066/9600.pdf|doi-access=free }}
- {{cite journal | vauthors=Keeney S, Chang GJ, Linn S |title=Characterization of a human DNA damage binding protein implicated in xeroderma pigmentosum E. |journal=J. Biol. Chem. |volume=268 |issue= 28 |pages= 21293–300 |year= 1993 |doi=10.1016/S0021-9258(19)36923-6 |pmid= 8407967 |doi-access=free }}
- {{cite journal | vauthors=Hwang BJ, Liao JC, Chu G |title=Isolation of a cDNA encoding a UV-damaged DNA binding factor defective in xeroderma pigmentosum group E cells. |journal=Mutat. Res. |volume=362 |issue= 1 |pages= 105–17 |year= 1996 |pmid= 8538642 |doi= 10.1016/0921-8777(95)00040-2|doi-access=free }}
- {{cite journal | vauthors=Nichols AF, Ong P, Linn S |title=Mutations specific to the xeroderma pigmentosum group E Ddb- phenotype. |journal=J. Biol. Chem. |volume=271 |issue= 40 |pages= 24317–20 |year= 1996 |pmid= 8798680 |doi=10.1074/jbc.271.40.24317 |doi-access=free }}
- {{cite journal | vauthors=Liu W, Nichols AF, Graham JA |title=Nuclear transport of human DDB protein induced by ultraviolet light. |journal=J. Biol. Chem. |volume=275 |issue= 28 |pages= 21429–34 |year= 2000 |pmid= 10777491 |doi= 10.1074/jbc.M000961200 |display-authors=etal|doi-access=free }}
- {{cite journal | vauthors=Martinez E, Palhan VB, Tjernberg A |title=Human STAGA complex is a chromatin-acetylating transcription coactivator that interacts with pre-mRNA splicing and DNA damage-binding factors in vivo. |journal=Mol. Cell. Biol. |volume=21 |issue= 20 |pages= 6782–95 |year= 2001 |pmid= 11564863 |doi= 10.1128/MCB.21.20.6782-6795.2001 | pmc=99856 |display-authors=etal}}
- {{cite journal | vauthors=Chen X, Zhang Y, Douglas L, Zhou P |title=UV-damaged DNA-binding proteins are targets of CUL-4A-mediated ubiquitination and degradation. |journal=J. Biol. Chem. |volume=276 |issue= 51 |pages= 48175–82 |year= 2002 |pmid= 11673459 |doi= 10.1074/jbc.M106808200 |doi-access= free }}
- {{cite journal | vauthors=Rapić-Otrin V, McLenigan MP, Bisi DC |title=Sequential binding of UV DNA damage binding factor and degradation of the p48 subunit as early events after UV irradiation. |journal=Nucleic Acids Res. |volume=30 |issue= 11 |pages= 2588–98 |year= 2002 |pmid= 12034848 |doi=10.1093/nar/30.11.2588 | pmc=117178 |display-authors=etal}}
- {{cite journal | vauthors=Bergametti F, Sitterlin D, Transy C |title=Turnover of hepatitis B virus X protein is regulated by damaged DNA-binding complex. |journal=J. Virol. |volume=76 |issue= 13 |pages= 6495–501 |year= 2002 |pmid= 12050362 |doi=10.1128/JVI.76.13.6495-6501.2002 | pmc=136256 }}
- {{cite journal | vauthors=Bontron S, Lin-Marq N, Strubin M |title=Hepatitis B virus X protein associated with UV-DDB1 induces cell death in the nucleus and is functionally antagonized by UV-DDB2. |journal=J. Biol. Chem. |volume=277 |issue= 41 |pages= 38847–54 |year= 2002 |pmid= 12151405 |doi= 10.1074/jbc.M205722200 |doi-access= free }}
- {{cite journal | vauthors=Andrejeva J, Poole E, Young DF |title=The p127 subunit (DDB1) of the UV-DNA damage repair binding protein is essential for the targeted degradation of STAT1 by the V protein of the paramyxovirus simian virus 5. |journal=J. Virol. |volume=76 |issue= 22 |pages= 11379–86 |year= 2002 |pmid= 12388698 |doi=10.1128/JVI.76.22.11379-11386.2002 | pmc=136798 |display-authors=etal}}
- {{cite journal | vauthors=Strausberg RL, Feingold EA, Grouse LH |title=Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences. |journal=Proc. Natl. Acad. Sci. U.S.A. |volume=99 |issue= 26 |pages= 16899–903 |year= 2003 |pmid= 12477932 |doi= 10.1073/pnas.242603899 | pmc=139241 |bibcode=2002PNAS...9916899M |display-authors=etal|doi-access=free }}
- {{cite journal | vauthors=Groisman R, Polanowska J, Kuraoka I |title=The ubiquitin ligase activity in the DDB2 and CSA complexes is differentially regulated by the COP9 signalosome in response to DNA damage. |journal=Cell |volume=113 |issue= 3 |pages= 357–67 |year= 2003 |pmid= 12732143 |doi=10.1016/S0092-8674(03)00316-7 |s2cid=11639677 |display-authors=etal|doi-access=free }}
- {{cite journal | vauthors=Leupin O, Bontron S, Strubin M |title=Hepatitis B virus X protein and simian virus 5 V protein exhibit similar UV-DDB1 binding properties to mediate distinct activities. |journal=J. Virol. |volume=77 |issue= 11 |pages= 6274–83 |year= 2003 |pmid= 12743284 |doi=10.1128/JVI.77.11.6274-6283.2003 | pmc=154990 }}
- {{cite journal | vauthors=Wertz IE, O'Rourke KM, Zhang Z |title=Human De-etiolated-1 regulates c-Jun by assembling a CUL4A ubiquitin ligase. |journal=Science |volume=303 |issue= 5662 |pages= 1371–4 |year= 2004 |pmid= 14739464 |doi= 10.1126/science.1093549 |bibcode=2004Sci...303.1371W |s2cid=40501515 |display-authors=etal|url=https://authors.library.caltech.edu/52147/7/Wertz.SOM.pdf }}
- {{cite journal | vauthors=Bouwmeester T, Bauch A, Ruffner H |title=A physical and functional map of the human TNF-alpha/NF-kappa B signal transduction pathway. |journal=Nat. Cell Biol. |volume=6 |issue= 2 |pages= 97–105 |year= 2004 |pmid= 14743216 |doi= 10.1038/ncb1086 |s2cid=11683986 |display-authors=etal}}
{{refend}}
{{PDB Gallery|geneid=1642}}
{{DNA repair}}