Figure 8.

Model depicting the reducing pathways for plastidial Trxs and their specificity toward known physiological targets of the Tpx and MSR families. Except for MSRA, which was only tested with Trx z, all other reductant/target protein couples have generally been exhaustively tested in previous studies. The conclusions represented here summarize results presented previously (Broin et al., 2002; Collin et al., 2003, 2004; Rouhier et al., 2004; Rey et al., 2005; Moon et al., 2006; Navrot et al., 2006; Pérez-Ruiz et al., 2006; Vieira Dos Santos et al., 2007; Couturier et al., 2009, 2011; Pulido et al., 2010; Tarrago et al., 2010; Chibani et al., 2011). New insights provided by this study (i.e. reduction of Trx-lilium2 and Trx-like2.1 by GSH and regeneration of PrxIIE and MSRB1 by Trx-like2.1) are highlighted by gray boxes. Dotted arrows indicate that reduction of these Trxs by FTR is possible but not experimentally determined.