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Title

BRMS151-98 and BRMS151-84 are crystal oligomeric coiled coils with different oligomerization states, which behave as disordered protein fragments in solution

AuthorsSpínola-Amilibia, Mercedes ; Rivera, José; Ortiz-Lombardía, Miguel; Romero, Antonio ; Neira, José L.; Bravo, Jerónimo
KeywordsX-ray
coiled-coils
NMR
BRMS1
biophysical features
Issue Date26-Jun-2013
PublisherElsevier
CitationJournal of Molecular Biology 425(12): 2147-63 (2013)
AbstractThe breast cancer metastasis suppressor 1 (BRMS1) gene suppresses metastasis without affecting the primary tumor growth. Cellular localization of BRMS1 appears to be important for exerting its effects on metastasis inhibition. We recently described a nucleo-cytoplasmic shuttling for BRMS1 and identified a nuclear export signal within the N-terminal coiled coil. The structure of these regions shows an antiparallel coiled coil capable of oligomerizing, which compromises the accessibility to the nuclear export signal consensus residues. We have studied the structural and biophysical features of this region to further understand the contribution of the N-terminal coiled coil to the biological function of BRMS1. We have observed that residues 85 to 98 might be important in defining the oligomerization state of the BRMS1 N-terminal coiled coil. The fragments are mainly disordered in solution, with evidence of residual structure. In addition, we report the presence of a conformational dynamic equilibrium (oligomeric folded species ↔ oligomeric unfolded) in solution in the BRMS1 N-terminal coiled coil that might facilitate the nuclear export of BRMS1 to the cytoplasm.
Description17 páginas, 9 figuras, 1 tabla.
Publisher version (URL)http://dx.doi.org/10.1016/j.jmb.2013.03.005
URIhttp://hdl.handle.net/10261/83505
DOI10.1016/j.jmb.2013.03.005
ISSN0022-2836
E-ISSN1089-8638
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(CIB) Artículos
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