TCDB is operated by the Saier Lab Bioinformatics Group
TCIDNameDomainKingdom/PhylumProtein(s)
1.A.72.1:  The MerF Mercuric Ion (Hg²⁺) Uptake (MerF) Family
*1.A.72.1.1









The MerF mercuric ion uptake transporter
Bacteria
Proteobacteria
MerF of plasmid pMER327/419 of Pseudomonas aeruginosa
*1.A.72.1.2









Heavy metal transporter

Bacteria
Proteobacteria
HM transporter of Arcobacter butzleri (A8EUY8)
*1.A.72.1.3









MerT (97aas)/MerP (93aas) (in a single operon with a transglutaminase (COG1305)).

Bacteria
Proteobacteria
MerTP of Haemophilus influenzae
MerT (Q57347)
MerP (P71365)
1.A.72.2:  The MerH Mercuric Ion (Hg²⁺) Permease (MerH) Family
*1.A.72.2.1









Hg2+ transporter, MerH (171aas; 4 TMSs) (transports mercuric ions via a pair of essential cysteine residues, but only when coexpressed with the mercuric reductase) (Schué et al., 2009).

Bacteria
Actinobacteria
MerH of Mycobacterium marinum (B2I419)
1.A.72.3:  The MerTP Mercuric Ion (Hg²⁺) Permease (MerTP) Family
*1.A.72.3.1









MerT/P

Bacteria
Proteobacteria
MerT/P of Ralstonia eutropha (Q6UP69)
*1.A.72.3.2









Putative MerT-MerP fusion protein of 200 aas (3 TMSs)

Bacteria
Bacteroidetes/Chlorobi group
 MerT-MerP of Chryseobacterium gleum (C0YI47)
*1.A.72.3.3









Putative MerT-MerP fusion protein of 199 aas (3-4 TMSs)

Bacteria
Chlamydiae/Verrucomicrobia group
MerT-MerP of Methylacidiphilum infernorum (B3DYY6)
*1.A.72.3.4









Putative MerT-MerP fusion protein of 196 aas (3 TMSs)

Bacteria
Bacteroidetes/Chlorobi group
MerT-MerP of Spirosoma linguale (D2QV66)
*1.A.72.3.5









Mercuric ion uptake system, MerT-P/MerP

Bacteria
Bacteroidetes/Chlorobi group
MerT-P/MerP of Tenacibaculum discolor
MerT-P (204aas; H6WCN3)
MerP (113aas; H6WCN4) 
1.a.72.4:  The MerC Mercuric Ion (Hg²⁺) Permease (MerC) Family
*1.A.72.4.1









MerC

Bacteria
Proteobacteria
MerC of the IncJ plasmid pMERPH of Shewanella putrefaciens
*1.A.72.4.2









MerC homologue (129aas; 4 TMSs)

Bacteria
Gemmatimonadetes
MerC homologue of Gemmatimonas aurantiaca
1.a.72.5:  The MerE Mercuric Ion (Hg²⁺) Permease (MerE) Family
*1.A.72.5.1









The Mercuric ion (Hg2+) uptake transporter, MerE (78aas; 2 TMSs).

Bacteria
Proteobacteria
MerE of transposon Tn21 of E. coli (Q57069)