Figure 2.

Sequence alignment of chloroplast and mitochondrial hsp70 proteins. Arabidopsis plastid hsp70s (cpHsc70-1, cpHsc70-2) were aligned with chloroplast hsp70s from pea, spinach, and cucumber. Arabidopsis mitochondrial hsp70s (mtHsc70-1, mtHsc70-2) were aligned with mitochondrial hsp70s from potato, bean, pea, and spinach. Black shading indicates consensus residues common to both chloroplast and mitochondrial hsp70s. Gray shading indicates consensus residues specific in either chloroplast or mitochondrial hsp70s. Brackets indicate the beginning of the N-terminal, highly conserved ATP-binding motif. Underlined residues are C-terminal signature motifs for organelle localization.