4YDS:
reference: The nucleotide-dependent interaction of FlaH and FlaI is essential for assembly and function of the archaellum motor., Chaudhury P, Neiner T, D'Imprima E, Banerjee A, Reindl S, Ghosh A, Arvai AS, Mills DJ, van der Does C, Tainer JA, Vonck J, Albers SV, Mol Microbiol. 2016 Feb;99(4):674-85. doi: 10.1111/mmi.13260. Epub 2015 Nov 17. PMID: 26508112

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