Figure 2.

Domain composition of QSOX in organisms of various phyla. Domains are colored in accordance with Figure 1: Trx1 (red), Trx2 (yellow), ψErv (green), and Erv (blue). Question marks indicate phyla with limited genomic data available and for which the presence of QSOX has not been demonstrated. An X indicates the presumed absence of QSOX from fungi, for which many genomic sequences are available but no QSOX gene has been detected. A dashed line in the domain map of Choanoflagellida QSOX indicates a lack of sequence information covering this segment.

Limor-Waisberg et al. BMC Evolutionary Biology 2013 13:70   doi:10.1186/1471-2148-13-70
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