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. 2011 Sep 28;6(9):e24794. doi: 10.1371/journal.pone.0024794

Figure 3. A model for possible metabolic connections in the honeybee abdomen.

Figure 3

The model integrates findings on protein abundance from the low strain control bees and metabolic connections described in the literature (see text for details). Plus sign: higher abundance in 9-day-old vs 11-day-old bees. Minus sign: lower abundance in 9-day-old vs 11-day-old bees. Solid arrows: enzyme (shown in orange) showed age-dependent abundance differences. Dashed arrows: no evidence found in the present data but connections are supported by vertebrate studies. The model proposes a shift from lipogenesis to lipid degradation and higher oxidative phosphorylation with increasing age. SDH: sorbitol dehydrogenase; ADH: alcohol dehydrogenase; DHAkinase: dihydroxyacetone kinase; TK: transketolase; PK: pyruvate kinase; PC: pyruvate carboxylase; MDH: malate dehydrogenase; ACL: ATP-citrate lyase; ECH: enoyl CoA hydratase; ETF: electron trasfer flavoprotein; UcCR: Ubiquinol-cytochrome C reductase; AK: adenylate kinase; PPP: pentose phosphate pathway; FA degradation: fatty acid degradation; Ox. Phos: oxidative phosphorylation; PPP: pentose phosphate cycle; FA: fatty acid; grey circle: mitochondrium.