Table I. Relative activity of recombinant OsHAD1 with different organic and inorganic P compounds.

Relative percentage activity was calculated with respect to the activity with pNPP as substrate.

Substrate	Percentage Activity
pNPP	100.00
ATP	40.20
ADP	17.28
AMP	25.21
Inorganic pyrophosphate	2.69
Phytic acid	1.70
O-Phosphoserine	2.29
O-Phosphothreonine	0.96
Glc-6-P	6.23
Fru-6-P	4.14
Man-6-P	4.73
Rib-5-P	10.48
dRib-5-P	6.26
α-d-Man-1-P	3.68