Table 2.

Proteins identified from extracts of liver from Rana sylvatica that were more abundant in winter than in summer.

GI	Protein	AR 1	Species	Function
147901600	glycogen phosphorylase	2.04	Xenopus laevis	glycogen catabolism
145545139	protein kinase C	1.72	Paramecium tetraurelia	signal transduction
148227386	pyruvate carboxylase, gene 1	1.67	Xenopus laevis	gluconeogenesis
134254218	pyruvate carboxylase, gene 2	1.51	Xenopus tropicalis	gluconeogenesis
118083730	1,4-α-glucan branching enzyme	1.42	Gallus gallus	glycogen synthesis
63146078	heat shock protein 70 (hsp70)	1.34	Oxyuranus scutellatus	stress response
2196882	heat shock cognate protein 70 (hsc70)	1.32	Pleurodeles waltl	protein folding
148225037	pyruvate kinase type M2	1.32	Xenopus laevis	glycolysis
147902026	peroxiredoxin 6	1.30	Xenopus laevis	antioxidation
91084329	protein phosphatase-1 α	1.29	Tribolium castaneum	glycogen metabolism
148234835	β-ureidopropionase	1.27	Xenopus laevis	amino acid metabolism
54020777	hydroxyacyl-CoA dehydrogenase	1.24	Xenopus tropicalis	fatty acid metabolism
148224534	Arp2/3, subunit 2	1.24	Xenopus laevis	actin polymerization
148223127	glyceraldehyde-3-phosphate dehydrogenase	1.21	Xenopus laevis	glycolysis; non-metabolic processes

¹AR, abundance ratio: abundance ratio: protein abundance in winter frogs relative to that in summer frogs.