TABLE 3.

Determination of total phosphate and glucose-6-P in glycogen and amylopectin

Sourcea	Glycogen phosphate (mol/mol) × 10−3		% C6 phosphate	Glucose residues per		Fold increase over WT
	Total	C6		Total P	C6 P	Total P	C6 P
WT (4)	0.371 ± 0.03	0.063 ± 0.007	17	2700	15800	1	1
Epm2b−/− (5)	1.612 ± 0.19	0.263 ± 0.015	16	620	3800	4.3	4.0
Epm2a−/− (4)	2.785 ± 0.09	0.582 ± 0.021	21	360	1720	7.5	9.2
Rabbit (5–11)	1.525 ± 0.10	0.324 ± 0.001	21	650	3090	NAb	NA
Amylo-pectin (4)	4.403 ± 0.18	3.307 ± 0.034	76	227	300	NA	NA

^a For the analyses of muscle glycogen from wild type (WT), Epm2b^−/−, and Epm2a^−/− mice, the numbers in parentheses refer to the number of samples, each from a separate mouse, that were analyzed. For the analyses of rabbit muscle glycogen and amylopectin, the numbers in parentheses refer to the number of independent, replicate analyses made from the same starting material.

^b NA, not applicable.