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Fanconi anemia group I protein (protein FANCI, FANCI, KIAA1794)

Function: 1) required for maintenance of chromosomal stability 2) role in the repair of DNA double-strand breaks by homologous recombination 3) role in repair of DNA cross-links 4) role in S phase & G2 phase checkpoint activation upon DNA damage 5) promotes FANCD2 ubiquitination & recruitment to DNA repair sites 6) interacts directly with FANCD2 7) phosphorylated in response to DNA damage by ATM &/or ATR 8) monoubiquitinated on Lys-523 during S phase & upon genotoxic stress 9) deubiquitinated by USP1 as cells enter G2/M, or once DNA repair is completed 10) monoubiquitination requires FA complex 11) ubiquitination is required for binding to chromatin, DNA repair, & normal cell cycle progression Structure: - C-terminal 30 residues are probably required for function in DNA repair Alternative splicing: named isoforms=3 Pathology: - defects in FANCI are a cause of Fanconi anemia

General

nuclear protein phosphoprotein

Properties

SIZE: MW = 149 kD entity length = 1328 aa COMPARTMENT: cell nucleus MOTIF: Ser phosphorylation site {S407} Ser phosphorylation site {S556} Ser phosphorylation site {S730} Thr phosphorylation site {T952} Ser phosphorylation site {S1121}

Database Correlations

OMIM 227650 UniProt Q9NVI1

References

  1. UniProt :accession Q9NVI1
  2. Fanconi Anemia Mutation Database http://www.rockefeller.edu/fanconi/mutate/