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Title: Nogo-B receptor possesses an intrinsically unstructured ectodomain and a partially folded cytoplasmic domain
Authors: Li, M. 
Song, J. 
Keywords: Bioinformatics
CD spectroscopy
Intrinsically unstructured
NMR spectroscopy
Nogo proteins
Nogo-B receptor
Partially folded
Issue Date: 2007
Citation: Li, M., Song, J. (2007). Nogo-B receptor possesses an intrinsically unstructured ectodomain and a partially folded cytoplasmic domain. Biochemical and Biophysical Research Communications 360 (1) : 128-134. ScholarBank@NUS Repository.
Abstract: RTN4/Nogo proteins containing three isoforms have been implicated in a large and diverse spectrum of biological functions. By contrast, only two functional receptors were known for them, namely NgR binding the 66-residue ectodomain shared by all three Nogos and NgBR specifically binding Nogo-B. The 297-residue NgBR was recently identified to be essential for stimulating chemotaxis and morphogenesis of endothelial cells but its structural property still remains completely unknown. In the present study, we expressed and subsequently conducted bioinformatics, CD and NMR characterization of NgBR and its two dissected domains. Very surprisingly, our results indicate that the NgBR ectodomain is intrinsically unstructured without both secondary and tertiary structures while the cytoplasmic domain is only partially folded with secondary structures but without a tight tertiary packing. Therefore, NgBR is a very rare example showing that the entire ectodomain of a transmembrane receptor could be predominantly disordered and the results presented here may bear important implications in understanding NgBR functions in the future. © 2007 Elsevier Inc. All rights reserved.
Source Title: Biochemical and Biophysical Research Communications
ISSN: 0006291X
DOI: 10.1016/j.bbrc.2007.06.031
Appears in Collections:Staff Publications

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