Figure 3: Pictorial depiction of observed domain architecture in GlxI proteins.

The Ni- and Zn-GlxI exist as both single- and two-domain proteins. The GlxI proteins from E. coli and P. putida have been used for representation of single domain GlxI and G. max and E. siliculosus for two-domain GlxI. Metal ion specificity has been indicated at right side for the respective proteins. The domain start and end positions are also mentioned.