Hmdb loader
Identification
HMDB Protein ID HMDBP12802
Secondary Accession Numbers None
Name DNA damage-binding protein 2
Synonyms
  1. Damage-specific DNA-binding protein 2
Gene Name DDB2
Protein Type Unknown
Biological Properties
General Function Not Available
Specific Function Protein, which is both involved in DNA repair and protein ubiquitination, as part of the UV-DDB complex and DCX (DDB1-CUL4-X-box) complexes, respectively. Core component of the UV-DDB complex (UV-damaged DNA-binding protein complex), a complex that recognizes UV-induced DNA damage and recruit proteins of the nucleotide excision repair pathway (the NER pathway) to initiate DNA repair. The UV-DDB complex preferentially binds to cyclobutane pyrimidine dimers (CPD), 6-4 photoproducts (6-4 PP), apurinic sites and short mismatches. Also functions as the substrate recognition module for the DCX (DDB2-CUL4-X-box) E3 ubiquitin-protein ligase complex DDB2-CUL4-ROC1 (also known as CUL4-DDB-ROC1 and CUL4-DDB-RBX1). The DDB2-CUL4-ROC1 complex may ubiquitinate histone H2A, histone H3 and histone H4 at sites of UV-induced DNA damage. The ubiquitination of histones may facilitate their removal from the nucleosome and promote subsequent DNA repair.
Pathways
  • protein ubiquitination
Reactions Not Available
GO Classification
Biological Process
DNA repair
response to UV
protein ubiquitination
Cellular Component
nucleus
Cul4-RING E3 ubiquitin ligase complex
Molecular Function
damaged DNA binding
Cellular Location Not Available
Gene Properties
Chromosome Location Not Available
Locus Not Available
SNPs Not Available
Gene Sequence Not Available
Protein Properties
Number of Residues Not Available
Molecular Weight 55862.895
Theoretical pI Not Available
Pfam Domain Function
Signals Not Available
Transmembrane Regions Not Available
Protein Sequence Not Available
GenBank ID Protein Not Available
UniProtKB/Swiss-Prot ID Q2YDS1
UniProtKB/Swiss-Prot Entry Name DDB2_DANRE
PDB IDs
GenBank Gene ID Not Available
GeneCard ID Not Available
GenAtlas ID Not Available
HGNC ID Not Available
References
General References
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  2. Scrima A, Konickova R, Czyzewski BK, Kawasaki Y, Jeffrey PD, Groisman R, Nakatani Y, Iwai S, Pavletich NP, Thoma NH: Structural basis of UV DNA-damage recognition by the DDB1-DDB2 complex. Cell. 2008 Dec 26;135(7):1213-23. doi: 10.1016/j.cell.2008.10.045. [PubMed:19109893 ]
  3. Fischer ES, Scrima A, Bohm K, Matsumoto S, Lingaraju GM, Faty M, Yasuda T, Cavadini S, Wakasugi M, Hanaoka F, Iwai S, Gut H, Sugasawa K, Thoma NH: The molecular basis of CRL4DDB2/CSA ubiquitin ligase architecture, targeting, and activation. Cell. 2011 Nov 23;147(5):1024-39. doi: 10.1016/j.cell.2011.10.035. [PubMed:22118460 ]