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. Author manuscript; available in PMC: 2014 Jul 23.
Published in final edited form as: Adv Genet. 2011;74:141–173. doi: 10.1016/B978-0-12-387690-4.00005-2

Figure 2.

Figure 2

The Clk feedback loop. All gene, regulatory element, and protein names are as defined in the text. All symbols are as defined in Figure 1. ACT, Clk activator; open arrow, transcription activation; antiphase sinusoidal line, antiphase mRNA rhythm; backslash, binding by one or the other protein. See text for detailed description.