Table 1.

The relative actin-activated ATPase activities of Physarum myosin constructs in EGTA and in Ca²⁺ and the effects of Ca²⁺ on them

Physarum myosin constructs	The relative actin-activated ATPase activities
	EGTA (%)a	Ca2+ (%)b	Effect of Ca2+ (%)c
Ph·HC/PhRLC/PhELC	100	3.33	96.6↓↓↓
Ph·HC/ScRLC/PhELC	100	20.10	79.90↓↓
Ph·HC/PhRLC/ScELC	100	60.19	39.81↓
Ph·HC/ScRLC/ScELC	100	101.74	1.74
Ph·HC/PhRLC/PhELC-3A	100	93.13	6.87
Ph·HC/ScRLC/PhELC-3A	100	97.51	2.49

^aThe actin-activated ATPase activities of Physarum myosin constructs were considered as 100% in EGTA.

^bThe actin-activated ATPase activities in Ca²⁺ / in EGTA × 100.

^cEffect of Ca²⁺ (%)^c = ∣Ca²⁺ (%)^b − EGTA (%)^a∣/EGTA (%)^a × 100; ↓means inhibition; means little activation and no significant difference; means little inhibition and no significant difference.