A precisely scaled model of the protein
A model of the crystal structure of ammonia channel AMTB from E. coli, as determined by S. Khademi et al., Science (2004) 305:1587
The protein channel resides in the E. coli cell wall, consists of 385 amino acids, and selectively transport the neutral NH3 (ammonia) molecule - not the positively charged NH4 ammonium ion.
PDB: 1U77.pdb

(c)2012 E. Meyer

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