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. 2021 Oct 11;26(20):6125. doi: 10.3390/molecules26206125

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© 2021 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Phosphorylation sites within the activation domain of TCF proteins. Amino acid sequence of the transcriptional activation domains (C-box) of Elk-1, SAP-1 and SAP-2. The key phosphorylation sites S383 and S389 are highlighted. Rapid (stars) and intermediate phosphorylation sites (bars) are indicated. On the C-terminal end of the C-box is the second MAP kinase docking site (DEF site). In addition, the Med23 binding site (F378, W379) is shown (M). The sequence information is derived from Ref. [7].