FANCI binds branched DNA and is monoubiquitinated by UBE2T-FANCL

Simonne Longerich, Joseph San Filippo, Dongqing Liu, Patrick Sung

Research output: Contribution to journalArticlepeer-review

77 Scopus citations


FANCI is integral to the Fanconi anemia (FA) pathway of DNA damage repair. Upon the occurrence of DNA damage, FANCI becomes monoubiquitinated on Lys-523 and relocalizes to chromatin, where it functions with monoubiquitinated FANCD2 to facilitate DNA repair. We show that FANCI and its C-terminal fragment possess a DNA binding activity that prefers branched structures. We also demonstrate that FANCI can be ubiquitinated on Lys-523 by the UBE2T-FANCL pair in vitro. These findings should facilitate future efforts directed at elucidating molecular aspects of the FA pathway.

Original languageEnglish (US)
Pages (from-to)23182-23186
Number of pages5
JournalJournal of Biological Chemistry
Issue number35
StatePublished - Aug 28 2009
Externally publishedYes

ASJC Scopus subject areas

  • Molecular Biology
  • Biochemistry
  • Cell Biology


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