4AYA: Crystal Structure Of Id2 Hlh Homodimer At 2.1a Resolution
reference: A Divalent Ion Is Crucial in the Structure and Dominant-Negative Function of ID Proteins, a Class of Helix-Loop-Helix Transcription Regulators., Wong MV, Jiang S, Palasingam P, Kolatkar PR, PLoS One. 2012;7(10):e48591. doi: 10.1371/journal.pone.0048591. Epub 2012 Oct 30. PMID: 23119064

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