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Structure of EAAT1 TM4: (a) Ribbon diagram of an EAAT1 monomer. The trimerization domain is in light blue, TM4 is in yellow, and the loop of TM4 unique for metazoans is in red. The transport domain is in light green with l-aspartate (spheres). PDBID:5LLU. (b) Sphere diagram of EAAT1 trimer, colored as in (a).
