Table 3.

Proteins less abundant in dark-colored beef at slightly elevated pH compared with normal-pH (fold-changes: dark color/normal-pH, P < 0.05).

Gene name	Protein name	Molecular function	Regulation	Fold change (dark color/normal-pH)	P-value
PYGM	Glycogen phosphorylase, muscle form	Glycogen phosphorylase activity, glycogen metabolic process	↓	−1.4	0.004
PFKM	ATP-dependant6-phosphofructokinase, muscle type	Canonical glycolysis, AMP, ATP binding, and 6-phosphofructokinase activity	↓	−1.3	0.02
PHKB	Phosphorylase b kinase regulatory subunit beta	Glycogen metabolic process, calmodulin-binding	↓	−1.3	0.004
PHKA1	Phosphorylase b kinase regulatory subunit alpha, skeletal muscle	Glycogen metabolic processes, calmodulin binding, and phosphorylase activity	↓	−1.3	0.003
PHKG1	Phosphorylase b kinase gamma catalytic chain, skeletal muscle	Glycogen biosynthesis activity and phosphorylase kinase activity	↓	−1.5	0.001
AGL	Glycogen debranching enzyme	Glycogen biosynthesis activity	↓	−1.3	0.001
EPM2A	Protein-tyrosine-phosphatase	Glycogen binding and glycogen synthase activity	↓	−1.6	0.02
CALM1	Calmodulin-1	Adenylate cyclase activator, calcium ion binding, and channel inhibitor activity	↓	−1.3	0.006
GC	Vitamin D binding protein	Vitamin D binding	↓	−1.4	0.02
BANF1	BAF nuclear assembly factor 1	DNA binding	↓	−1.3	0.04
FBN1	Fibrillin 1	Calcium ion, heparin binding and hormone activity	↓	−1.3	0.004
SDR39U1	Epimerase family protein SDR39UI	Oxidoreductase activity	↓	−1.8	0.006
CZIB	CXXC motif-containing zinc binding protein	Zinc ion binding	↓	−1.7	0.03