Glucose-6-Phosphate Dehydrogenase Regulation in Anoxia Tolerance of the Freshwater Crayfish Orconectes virilis

Table 1

Effect of incubation under conditions that stimulated the activities of protein phosphatases or protein kinases on the 𝐾_𝑚 values (mM) for G6P of crayfish hepatopancreas G6PDH.

Condition	Control 𝐾𝑚 (mM)	20 h Anoxic 𝐾𝑚 (mM)
Untreated	0.13±0.016	0.08±0.007^b
PP1	0.11±0.026	0.092±0.014
PP2B	0.20±0.036^a	0.25±0.025^a
Alkaline Phosphatase	0.40±0.076^a	0.83±0.088^a,b
PKA	0.019±0.039^a	0.026±0.009^a
PKG	0.024±0.039^a	0.034±0.009^a

Data are means ± SEM, 𝑛=3-4. aSignificantly different from the corresponding untreated value, 𝑃<0.05; bsignificantly different from the corresponding control value, 𝑃<0.05.