A novel mode of ferric ion coordination by the periplasmic ferric ion-binding subunit FbpA of an ABC-type iron transporter from Thermus thermophilus HB8.
Wang, S., Ogata, M., Horita, S., Ohtsuka, J., Nagata, K., Tanokura, M.(2014) Acta Crystallogr D Biol Crystallogr 70: 196-202
- PubMed: 24419392 
- DOI: 10.1107/S1399004713026333
- Primary Citation of Related Structures:  
3WAE, 3WAF - PubMed Abstract: 
Crystal structures of FbpA, the periplasmic ferric ion-binding protein of an iron-uptake ABC transporter, from Thermus thermophilus HB8 (TtFbpA) have been solved in apo and ferric ion-bound forms at 1.8 and 1.7 Å resolution, respectively. The latter crystal structure shows that the bound ferric ion forms a novel six-coordinated complex with three tyrosine side chains, two bicarbonates and a water molecule in the metal-binding site ...