| Comment | Members of this PqqD-related family so far occur only in the genus Geobacter, always together with a PqqE-like radical SAM domain/SPASM domain protein and a second SPASM domain protein with traces of a degenerate radical SAM domain. The extended gene region includes a high-molecular-weight cytochrome c family protein. Besides authentic PqqD (TIGR03859), another example of a PqqD family protein occurs in the SynChlorMet cassette, again with two PqqE-like proteins. The system is named GeoRSP for its prevalence in Geobacter, its Radical SAM protein, is SPASM domain protein, and its PqqD family protein. |
