An unusual twin-his arrangement in the pore of ammonia channels is essential for substrate conductance
Javelle, A., Lupo, D., Zheng, L., Li, X.-D., Winkler, F.K., Merrick, M.(2006) J Biol Chem 281: 39492-39498
- PubMed: 17040913 
- DOI: 10.1074/jbc.M608325200
- Primary Citation of Related Structures:  
2NMR, 2NOP, 2NOW, 2NPC, 2NPD, 2NPE, 2NPG, 2NPJ, 2NPK - PubMed Abstract: 
Amt proteins constitute a class of ubiquitous integral membrane proteins that mediate movement of ammonium across cell membranes. They are homotrimers, in which each subunit contains a narrow pore through which substrate transport occurs. Two conserved histidine residues in the pore have been proposed to be necessary for ammonia conductance ...