Table 3. The table summarized the interactions between catalytic residues and D-glycerate or glyoxylate in different GRHPRs.

Residue		D-Glycerate			Glyoxylate
Number	Atom	Atom	Distances in PyaGRHPR structure	Distances in hGRHPR structure	Atom	Distances in PfuGRHPR structure
His 288	NE2	O3	2.83 (2.89)	2.80 (2.54)	O1	2.73
Arg 241	NH1	O3	2.66 (2.62)	2.77 (3.05)	O1	2.52
Arg 241	NH2	O2	2.80 (2.61)	3.00 (2.82)	O2	2.81
Gly 77	N	O2	3.07 (3.12)	2.70 (2.86)	O2	2.70
Val 76	N	O1	2.96 (3.02)	2.90 (2.75)	O3	2.79
Ser 291	OG	O4	3.99 (3.81)	2.92 (2.67)

Distances between catalytic residues and substrate molecules are indicated in angströms. For PyaGRHPR and hGRHPR, the indicated values refer to the individual measures of the distances and correspond to the different occupied active sites present in the asymmetric unit.