4XXJ:
reference: An Approach to Heterologous Expression of Membrane Proteins. The Case of Bacteriorhodopsin., Bratanov D, Balandin T, Round E, Shevchenko V, Gushchin I, Polovinkin V, Borshchevskiy V, Gordeliy V, PLoS One. 2015 Jun 5;10(6):e0128390. doi: 10.1371/journal.pone.0128390., eCollection 2015. PMID: 26046789

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