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HEY2

Hairy/enhancer-of-split related with YRPW motif protein 2 (HEY2) also known as cardiovascular helix-loop-helix factor 1 (CHF1) is a protein that in humans is encoded by the HEY2 gene.

Expression
The expression of the Hey2 gene is induced by the Notch signaling pathway. In this mechanism, adjacent cells bind via transmembrane notch receptors. Two similar and redundant genes in mouse are required for embryonic cardiovascular development, and are also implicated in neurogenesis and somitogenesis. Alternatively spliced transcript variants have been found, but their biological validity has not been determined. == Knockout studies ==
Knockout studies
The Hey2 gene is involved with the formation of the cardiovascular system and especially the heart itself. The loss of these two genes resulted in death of the embryo 9.5 days after conception. It was found that the developing hearts of these embryos lacked most structural formations which resulted in massive hemorrhage. When only the Hey1 gene was knocked out, no apparent phenotypic changes occurred, suggesting that these two genes carry similar and redundant information for the development of the heart. == Clinical significance ==
Clinical significance
Common variants of SCN5A, SCN10A, and HEY2 (this gene) are associated with Brugada syndrome. == Interactions ==
Interactions
HEY2 has been shown to interact with Sirtuin 1 and Nuclear receptor co-repressor 1. == References ==
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