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Figure 2 | BMC Bioinformatics

Figure 2

From: Assessing the ability of sequence-based methods to provide functional insight within membrane integral proteins: a case study analyzing the neurotransmitter/Na+ symporter family

Figure 2

Chemical diversity of the osmolytes and biogenic amines. (a) All of the osmolytes are of similar size and are zwitterionic. Moreover, the separation of charge in each is nearly equal. (b) The biogenic amines (which are common neurotransmitters within the brain) are all aromatic amines. As one would expect based on the chemical diversity within the biogenic amines, there is an evolutionary split between the serotonin and catecholamine transporters.

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