5XT2:
reference: Architecture of the complete oxygen-sensing FixL-FixJ two-component signal transduction system., Wright GSA, Saeki A, Hikima T, Nishizono Y, Hisano T, Kamaya M, Nukina K, Nishitani H, Nakamura H, Yamamoto M, Antonyuk SV, Hasnain SS, Shiro Y, Sawai H, Sci Signal. 2018 Apr 10;11(525). pii: 11/525/eaaq0825. doi:, 10.1126/scisignal.aaq0825. PMID: 29636388

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