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J Biol Chem September 17, 2004; 279 (38): 39421-30.

The Fanconi anemia gene product FANCF is a flexible adaptor protein.

Léveillé F , Blom E , Medhurst AL , Bier P , Laghmani el H , Johnson M , Rooimans MA , Sobeck A , Waisfisz Q , Arwert F , Patel KJ , Hoatlin ME , Joenje H , de Winter JP .

The Fanconi anemia (FA) protein FANCF is an essential component of a nuclear core complex that protects the genome against chromosomal instability, but the specific function of FANCF is still poorly understood. Based upon the homology between human and Xenopus laevis FANCF, we carried out an extensive mutagenesis study to examine which domains are functionally important and to gain more insight into the function of FANCF. In contrast to previous suggestions, we show that FANCF does not have a ROM-like function. We found that the C terminus of FANCF interacts directly with FANCG and allows the assembly of other FA proteins into a stable complex. The N terminus appears to stabilize the interaction with FANCA and FANCG and is essential for the binding of the FANCC/FANCE subcomplex. We identified several important amino acids in this N-terminal region but, surprisingly, many amino acid changes failed to affect the function of the FANCF protein. Our data demonstrate that FANCF acts as a flexible adaptor protein that plays a key role in the proper assembly of the FA core complex.

PubMed ID: 15262960
Article link: J Biol Chem

Genes referenced: fanca fancc fance fancf fancg rom1
GO keywords: DNA repair [+]

Disease Ontology terms: pancytopenia [+]

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