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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 Hum+Mol+Genet
2010 ; 19
(24
): 4837-47
Nephropedia Template TP
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FOXRED1, encoding an FAD-dependent oxidoreductase complex-I-specific molecular
chaperone, is mutated in infantile-onset mitochondrial encephalopathy
#MMPMID20858599
Fassone E
; Duncan AJ
; Taanman JW
; Pagnamenta AT
; Sadowski MI
; Holand T
; Qasim W
; Rutland P
; Calvo SE
; Mootha VK
; Bitner-Glindzicz M
; Rahman S
Hum Mol Genet
2010[Dec]; 19
(24
): 4837-47
PMID20858599
show ga
Complex I is the first and largest enzyme in the respiratory chain and is located
in the inner mitochondrial membrane. Complex I deficiency is the most commonly
reported mitochondrial disorder presenting in childhood, but the molecular basis
of most cases remains elusive. We describe a patient with complex I deficiency
caused by mutation of the molecular chaperone FOXRED1. A combined homozygosity
mapping and bioinformatics approach in a consanguineous Iranian-Jewish pedigree
led to the identification of a homozygous mutation in FOXRED1 in a child who
presented with infantile-onset encephalomyopathy. Silencing of FOXRED1 in human
fibroblasts resulted in reduced complex I steady-state levels and activity, while
lentiviral-mediated FOXRED1 transgene expression rescued complex I deficiency in
the patient fibroblasts. This FAD-dependent oxidoreductase, which has never
previously been associated with human disease, is now shown to be a complex
I-specific molecular chaperone. The discovery of the c.1054C>T; p.R352W mutation
in the FOXRED1 gene is a further contribution towards resolving the complex
puzzle of the genetic basis of human mitochondrial disease.