Figure 5. Multiple sequence alignment of deduced protease AprX from P. fluorescens 041 (this study), P. fluorescens A506 (Genbank accession number AY298902 ), and P. fluorescens strain F (Genbank accession number DQ146945 ). The differences in amino acid residues are indicated by gray shading, and the catalytic domain of neutral zinc metalloprotease is underlined. Boxed residues are thought to participate in Calcium binding.
