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TCID	Name	Domain	Kingdom/Phylum	Protein(s)
2.A.62.1.1	NhaD Na⁺/H⁺ antiporter	Bacteria	Pseudomonadota	NhaD of Vibrio parahaemolyticus
2.A.62.1.2	NhaD Na⁺(Li⁺)/H⁺ antiporter (Liu et al., 2005). AaNhaD is from the soda lake alkaliphile, Alkalimonas amylolytica, is crucial for the bacterium's resistance to salt/alkali stresses (Zhong et al. 2012).	Bacteria	Pseudomonadota	NhaD of Alkalimonas amylolytica (AAX63482)
2.A.62.1.3	Chloroplast Na⁺/H⁺ antiporter of 582 aas, NhaD (Barrero-Gil et al. 2007). Mediates ionic homeostasis in chloroplasts from red algae to flowering plants ((Barrero-Gil et al. 2007).	Eukaryota	Viridiplantae, Streptophyta	NhaD of Physcomitrella patens (Moss)
2.A.62.1.4	Na⁺/H⁺ antiporter, NhaD of 495 aas; involved in the response to salt stress and adaptation to a marine environment (Kurz et al. 2006).	Bacteria	Pseudomonadota	NhaD of the halophilic eubacterium, Halomonas elongata
2.A.62.1.5	Sodium/proton antiporter, NhaD1, of 488 aas and 14 TMSs. Two NhaD homologues that catalyze Na⁺/H⁺ antiport were identified from this halotolerant and alkaliphilic strain isolated from sodium enriched black liquor. They exhibit 72% identity and have similar binding affinities for Na⁺ and Li⁺, while having different pH profiles. Ha-NhaD1 was active at pH 6.0 and most active at pH 8.0-8.5, whereas Ha-NhaD2 lacked activity at pH 6.0 but exhibited maximal activity at pH 9.5 or higher. Residues involved in transport were identified (Cui et al. 2016).	Bacteria	Pseudomonadota	NhaD1 of Halomonas sp. Y2
2.A.62.1.6	Na⁺ or Li⁺/H⁺ antiporter, NhaD, of 477 aas and 14 TMSs. It extrudes Na⁺ or Li⁺ in exchange for H⁺ (Dzioba et al. 2002). Residues important for function have been identified (Ostroumov et al. 2002; Habibian et al. 2005).	Bacteria	Pseudomonadota	NhaD of Vibrio cholerae
2.A.62.1.7	NhaD homologue of 400 aas and 11 TMSs	Bacteria	Pseudomonadota	NhaD of Hyphomicrobium zavarzinii