Figure 2.
Transcriptional, cytosolic, and metabolic cycles in human red blood cells. Transcription–translation feedback loops and redox cycles coexist and have extensive cross talk through redox cofactors, such as NADH and NADPH. NADH and NADPH can alter the phase and amplitude of circadian gene bioluminescent reporters in isolated red blood cells. Reprinted with permission from Ref. 25.