Extended Data Fig. 7: Free 15N ammonia is recycled into nonessential amino acids (blue), essential amino acids (red) and 5-oxoproline (turquoise) during arousal from torpor (360 mg/kg 15N ammonium acetate pulse infusion, n=5, mean ±SEM). | Nature Metabolism

Extended Data Fig. 7: Free 15N ammonia is recycled into nonessential amino acids (blue), essential amino acids (red) and 5-oxoproline (turquoise) during arousal from torpor (360 mg/kg 15N ammonium acetate pulse infusion, n=5, mean ±SEM).

From: Nitrogen recycling buffers against ammonia toxicity from skeletal muscle breakdown in hibernating arctic ground squirrels

Extended Data Fig. 7

Free 15N ammonia is recycled into nonessential amino acids (blue), essential amino acids (red) and 5-oxoproline (turquoise) during arousal from torpor (360 mg/kg 15N ammonium acetate pulse infusion, n=5, mean ±SEM). Percent 15N incorporation calculated as: (15N metabolite peak area/(15N metabolite peak area + 14N metabolite peak area))*100 following natural abundance correction.

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