GTF2IRD2 Is Located in the Williams-Beuren Syndrome Critical Region 7q11.23 and Encodes a Protein with Two TFII-I-Like Helix-Loop-Helix Repeats

Williams-Beuren syndrome (also known as Williams syndrome) is caused by a deletion of a 1.55- to 1.84-megabase region from chromosome band 7q11.23. GTF2IRD1 and GTF2I, located within this critical region, encode proteins of the TFII-I family with multiple helix-loop-helix domains known as I repeats....

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