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. 2011 Apr 22;6(4):e19094. doi: 10.1371/journal.pone.0019094

Figure 4. Projection of supplementary GPCR sequences onto the sequence space of human GPCRs.

Figure 4

GPCRs from N. vectensis (A), C. elegans (B), C. intestinalis (C) and D. rerio (D) are projected onto the plane formed by the first two components of the human active space. Transparent circles and crosses represent human and supplementary elements, respectively. The color code refers to the GPCR sub-families (AD: brown; AMIN: light blue; CHEM: dark blue; LGR: yellow; MEC: pink; MTN: grey; MRG: violet; OPN: orange; PEP: dark green; PTG: cyan; PUR: light green; SO: red; UC: black).