Figure 1.

Amino acid sequence of the 14-3-3 interacting chloroplast precursor protein At pPSI-N and comparison with barley PSI-N homolog. Amino acid identities between pPSI-N proteins are indicated by asterisks. Accession numbers for the PSI-N proteins are: Arabidopsis, U32176; barley, X66428. Transit peptide sequences are represented by lowercase characters, the thylakoid peptidase cleavage site in bold, and mature protein by uppercase characters. Identical residues between both proteins are indicated by asterisks. The characteristic twin Arg residues in the signal peptides critical for thylakoid import of precursors using the ΔpH pathway are boxed.