3EK7:
reference: Crystal Structures of the GCaMP Calcium Sensor Reveal the Mechanism of Fluorescence Signal Change and Aid Rational Design., Akerboom J, Rivera JD, Guilbe MM, Malave EC, Hernandez HH, Tian L, Hires SA, Marvin JS, Looger LL, Schreiter ER, J Biol Chem. 2009 Mar 6;284(10):6455-64. Epub 2008 Dec 18. PMID: 19098007

This OCA Structure page
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