5C21:
reference: Crystal Structure of a Soluble Fragment of the Membrane Fusion Protein HlyD in a Type I Secretion System of Gram-Negative Bacteria., Kim JS, Song S, Lee M, Lee S, Lee K, Ha NC, Structure. 2016 Jan 22. pii: S0969-2126(16)00005-8. doi:, 10.1016/j.str.2015.12.012. PMID: 26833388

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