>3B1W_1|Chains A, B, C, D|Ferrous iron uptake transporter protein B|Streptococcus thermophilus (264199) GSMTEIALIGNPNSGKTSLFNLITGHNQRVGNWPGVTVERKSGLVKKNKDLEIQDLPGIYSMSPYSPEAKVARDYLLSQRADSILNVVDATNLERNLYLTTQLIETGIPVTIALNMIDVLDGQGKKINVDKLSYHLGVPVVATSALKQTGVDQVVKKAAHTTTSTVGDLAFPIYDDRLEAAISQILEVLGNSVPQRSARFYAIKLFEQDSLVEAELDLSQFQRKEIEDIIRITEEIFTEDAESIVINERYAFIERVCQMAESHTEDFALTLS