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2015 ; 16
(7
): 824-35
Nephropedia Template TP
gab.com Text
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English Wikipedia
Structural insight into the TRIAP1/PRELI-like domain family of mitochondrial
phospholipid transfer complexes
#MMPMID26071602
Miliara X
; Garnett JA
; Tatsuta T
; Abid Ali F
; Baldie H
; Pérez-Dorado I
; Simpson P
; Yague E
; Langer T
; Matthews S
EMBO Rep
2015[Jul]; 16
(7
): 824-35
PMID26071602
show ga
The composition of the mitochondrial membrane is important for its architecture
and proper function. Mitochondria depend on a tightly regulated supply of
phospholipid via intra-mitochondrial synthesis and by direct import from the
endoplasmic reticulum. The Ups1/PRELI-like family together with its mitochondrial
chaperones (TRIAP1/Mdm35) represent a unique heterodimeric lipid transfer system
that is evolutionary conserved from yeast to man. Work presented here provides
new atomic resolution insight into the function of a human member of this system.
Crystal structures of free TRIAP1 and the TRIAP1-SLMO1 complex reveal how the
PRELI domain is chaperoned during import into the intermembrane mitochondrial
space. The structural resemblance of PRELI-like domain of SLMO1 with that of
mammalian phoshatidylinositol transfer proteins (PITPs) suggest that they share
similar lipid transfer mechanisms, in which access to a buried
phospholipid-binding cavity is regulated by conformationally adaptable loops.
|Adaptor Proteins, Signal Transducing/*chemistry/*metabolism
[MESH]
|Amino Acid Sequence
[MESH]
|Binding Sites
[MESH]
|Biological Transport
[MESH]
|Crystallography, X-Ray
[MESH]
|Endoplasmic Reticulum/metabolism
[MESH]
|Humans
[MESH]
|Hydrophobic and Hydrophilic Interactions
[MESH]
|Intracellular Signaling Peptides and Proteins/*chemistry/*metabolism
[MESH]