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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Biol+Chem
2014 ; 289
(37
): 25774-82
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The Fanconi anemia proteins FANCD2 and FANCJ interact and regulate each other s
chromatin localization
#MMPMID25070891
Chen X
; Wilson JB
; McChesney P
; Williams SA
; Kwon Y
; Longerich S
; Marriott AS
; Sung P
; Jones NJ
; Kupfer GM
J Biol Chem
2014[Sep]; 289
(37
): 25774-82
PMID25070891
show ga
Fanconi anemia is a genetic disease resulting in bone marrow failure, birth
defects, and cancer that is thought to encompass a defect in maintenance of
genomic stability. Mutations in 16 genes (FANCA, B, C, D1, D2, E, F, G, I, J, L,
M, N, O, P, and Q) have been identified in patients, with the Fanconi anemia
subtype J (FA-J) resulting from homozygous mutations in the FANCJ gene. Here, we
describe the direct interaction of FANCD2 with FANCJ. We demonstrate the
interaction of FANCD2 and FANCJ in vivo and in vitro by immunoprecipitation in
crude cell lysates and from fractions after gel filtration and with baculovirally
expressed proteins. Mutation of the monoubiquitination site of FANCD2 (K561R)
preserves interaction with FANCJ constitutively in a manner that impedes proper
chromatin localization of FANCJ. FANCJ is necessary for FANCD2 chromatin loading
and focus formation in response to mitomycin C treatment. Our results suggest not
only that FANCD2 regulates FANCJ chromatin localization but also that FANCJ is
necessary for efficient loading of FANCD2 onto chromatin following DNA damage
caused by mitomycin C treatment.