Transport and binding proteins:Cations and iron carrying compounds

Ammonia transporter (NCBI)
N5-methyltetrahydromethanopterin: methyltransferase, subunit A and F related protein (NCBI)
A1A0 ATPase, subunit D (NCBI)
N5-methyltetrahydromethanopterin: methyltransferase, subunit A (NCBI)
cobalt transport protein O (NCBI)
conserved hypothetical protein (NCBI)