Table 5. Structural comparisons between SpGR and homologues.

Organism	PDB code	R.m.s.d. (Å)	N align	Sequence identity (%)
Vibrio parahaemolyticus	5u1o	0.74	444	59
Streptococcus mutans	5v36	0.95	441	60
Escherichia coli	1ger	0.94	445	61
Homo sapiens	1gra	1.23	444	51
Yersinia pestis	5vdn	0.95	444	59
Plasmodium falciparum	1onf	1.11	425	44
Saccharomyces cerevisiae	2hqm	1.06	436	47
Chromatium gracile †	2r9z	1.21	437	49

^†Glutathione amide reductase (Van Petegem et al., 2007 ▸).