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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
2015 ; 290
(20
): 12595-602
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English Wikipedia
Systemic lupus erythematosus-associated neutrophil cytosolic factor 2 mutation
affects the structure of NADPH oxidase complex
#MMPMID25795782
Armstrong DL
; Eisenstein M
; Zidovetzki R
; Jacob CO
J Biol Chem
2015[May]; 290
(20
): 12595-602
PMID25795782
show ga
In a case-control association study with 3716 North Americans of Hispanic descent
and 4867 North Americans of European descent, we show that the associations of
rs17849502 (NCF2 His-389 ? Gln) and rs13306575 (NCF2 Arg-395 ? Trp) with systemic
lupus erythematosus are independent. We have shown that His-389 ? Gln disrupts
the binding of NCF2 to the ZF domain of VAV1, resulting in decreased NADPH
oxidase activity. With respect to Arg-395 ? Trp, using protein docking and
structure analyses, we provide a model for the involvement of this mutation in
the structure and function of the NADPH oxidase complex. This model assigns a
central role to Arg-395 in the structure and stability of the quaternary
NCF2/NCF4/VAV1/RAC1 NADPH oxidase complex. Arg-395 stabilizes the C-terminal tail
of NCF4 and the conformation of NCF2 loop 395-402, which in turn stabilize the
evolutionarily conserved interactions of NCF2/NCF4 with the DH domain of VAV1 and
RAC1 region 120-137. Our findings are consistent with the high levels of
conservation of all of the residues involved in these interactions.