2L7H:
reference: The Mechanisms of HAMP-Mediated Signaling in Transmembrane Receptors., Ferris HU, Dunin-Horkawicz S, Mondejar LG, Hulko M, Hantke K, Martin J, Schultz JE, Zeth K, Lupas AN, Coles M, Structure. 2011 Mar 9;19(3):378-85. PMID: 21397188

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