After phosphorylation by MAP2Ks, a proportion of activated MAPK translocates into the nucleus where it activates nuclear targets (reviewed in Roskoski, 2012b). MAPKs, which lack a nuclear localization signal (NLS), may 'piggyback' into the nucleus in complex with other nuclear-targeted proteins or may translocate by virtue of interaction with components of the nuclear pore complex (Brunet et al, 1999; Adachi et al, 1999; Matsubayashi et al, 2001; Whitehurst et al, 2002; Khokhlatchev et al, 1998; reviewed in Roskoski, 2012b). Although dimerization of MAPKs was thought to be critical for nuclear translocation, a number of studies have now challenged the physiological relevance of MAPK dimerization and this remains an area of uncertainty (Lenormand et al, 1993; Chen et al, 1992; Casar et al, 2008; Lidke et al, 2010; Burack and Shaw, 2005; reviewed in Casar et al, 2009; Roskoski, 2012b)
Brunet, A, Dowd, S, Pouysségur, J, Keyse, S, Roux, D, Lenormand, P
Crespo, P, Pinto, A, Casar, B
Jovin, TM, Pouysségur, J, Post, JN, Huang, F, Rieger, B, Thomas, JL, Lidke, DS, Lenormand, P, Wilsbacher, J
Cobb, MH, Atkinson, M, Goldsmith, E, Wilsbacher, J, Robinson, M, Khokhlatchev, AV, Canagarajah, B
You, Y, Cobb, MH, Wilsbacher, JL, Moore, MS, Luby-Phelps, K, Whitehurst, AW
Fukuda, M, Nishida, E, Adachi, M
Burack, WR, Shaw, AS
Brunet, A, Pouysségur, J, Pagès, G, L'Allemain, G, Sardet, C, Lenormand, P
Matsubayashi, Y, Fukuda, M, Nishida, E
Sarnecki, C, Blenis, J, Chen, RH
Roskoski, R Jr
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